Comprehensive collection of calculators for finance, health, math, and more. Fast, accurate, and completely free.
Calculate Amazon FBA fees, profit margins, and ROI for your products. Includes fulfillment fees, storage costs, referral fees, and complete profitability analysis.
FinancialCalculate your 2024 federal and state income taxes with the latest tax brackets, deductions, and credits. Get instant estimates of your tax liability, refund, and effective tax rate.
FinancialStop undercharging! Calculate your true hourly rate including hidden costs like taxes, healthcare, and unpaid time. Get data-driven pricing that covers all expenses plus profit.
FinancialSee the true cost of homeownership beyond monthly payments. Compare 15 vs 30-year terms, visualize interest savings with extra payments, and understand how rate changes impact your budget.
FinancialGet instant mortgage estimates in seconds. Perfect for house hunting - quickly check if that dream home fits your budget before scheduling viewings.
FinancialMaximize your VA loan benefits with zero down payment options. See how much home you can afford, calculate funding fees, and compare savings versus conventional loans.
FinancialUniversal loan calculator for any borrowing need. Compare different loan terms side-by-side, see total interest costs, and discover how extra payments can save thousands.
FinancialWill your savings last through retirement? Find out if you're on track, see how much you need to save monthly, and discover the power of starting early with compound growth visualization.
FinancialCalculate your 2024 federal and state income taxes with our comprehensive tax calculator. Get instant estimates of tax liability, refunds, and see detailed tax bracket breakdowns.
FinancialCalculate your 2025 federal and state taxes with updated brackets and deductions. Estimate refunds, discover tax-saving strategies, and optimize your tax situation.
FinancialWatch your money multiply! See how $100/month can become $500k+ over time. Interactive charts show the magic of compound interest and why Einstein called it the 8th wonder.
FinancialKnow your exact take-home pay before accepting a job offer. Factor in federal/state taxes, 401k, health insurance, and see how bonuses or raises impact your net income.
FinancialComplete payroll solution for businesses. Calculate employee costs including FICA, unemployment taxes, and benefits. See the true cost of hiring and ensure accurate paychecks.
FinancialCompare renting vs buying with comprehensive financial analysis. Calculate monthly costs, net worth projections, break-even points, and discover which option builds more wealth over time.
FinancialCalculate Annual Percentage Yield (APY), compare compound vs simple interest, analyze real returns after taxes and inflation. Free APY calculator with detailed savings projections.
FinancialCalculate your net worth by tracking assets and liabilities. Get detailed analysis of your financial health, asset allocation, debt ratios, and personalized recommendations for wealth building.
FinancialUnlock your home's hidden value. Calculate available equity, compare HELOC vs cash-out refinancing, and see monthly payments for different borrowing amounts.
FinancialCalculate how much you can borrow against your home equity. Compare home equity loans vs HELOCs, estimate monthly payments, and understand closing costs.
FinancialCalculate profit margin, markup percentage, and break-even analysis. Convert between margin and markup, analyze profitability, and determine pricing strategies.
FinancialCalculate stock investment returns, analyze dividend yields, and evaluate portfolio performance. Includes comprehensive analysis of capital gains, dividends, tax implications, and risk metrics.
FinancialCalculate capital gains taxes on stocks, real estate, and investments. Optimize holding periods, compare short-term vs long-term rates, and discover tax-saving strategies.
FinancialCalculate mortgage insurance costs and discover when you can remove PMI. Compare loan options and explore strategies to eliminate mortgage insurance faster.
FinancialCalculate foreign exchange rates and currency conversions with real-time analysis. Compare transfer methods, fees, and get the best rates for international money transfers.
FinancialCalculate Net Present Value for investment analysis and capital budgeting decisions. Evaluate projects with IRR, payback period, and profitability metrics.
FinancialCalculate payments, interest costs, and payoff strategies for personal lines of credit, HELOCs, and business credit lines. Compare options and optimize your borrowing.
FinancialConvert hourly wages to annual salary and calculate take-home pay after taxes. Includes overtime, bonuses, deductions, and tax calculations.
FinancialCalculate net pay, taxes, and deductions for accurate paycheck estimation. Includes federal, state, FICA taxes, 401k, and benefits.
FinancialCalculate savings growth with compound interest, set financial goals, and optimize your saving strategy. Includes investment portfolio analysis and emergency fund planning.
FinancialKnow your health status instantly. Calculate BMI with personalized insights - are you in the healthy range? Get actionable recommendations based on your results.
Fitness & HealthBeyond basic BMI - get visual charts showing exactly where you stand, health risk assessment, and customized action plans for reaching your ideal weight range.
Fitness & HealthStop guessing your calorie needs! Get precise daily targets for your goals - lose 2 lbs/week safely or bulk up effectively. Includes meal timing and macro breakdowns.
Fitness & HealthCalculate your daily calorie needs, create a calorie deficit for weight loss, and track macros. Get personalized TDEE, BMR, and macro recommendations.
Fitness & HealthVeterinary-grade cat nutrition calculator using proven RER formulas. Calculate accurate daily calories for weight management, safe weight loss, kittens & senior cats. Includes body condition scoring.
Fitness & HealthDiscover your metabolic baseline - how many calories you burn doing absolutely nothing. Essential for creating effective diet plans that actually work for your body.
Fitness & HealthThe most accurate calorie calculator - factors in your activity level, exercise, and lifestyle. Know exactly how much to eat whether you're cutting, bulking, or maintaining.
Fitness & HealthCalculate your optimal keto macros for weight loss, muscle gain, or therapeutic ketosis. Get personalized fat, protein, and carb targets based on your body stats and goals.
Fitness & HealthStuck on homework? Get instant step-by-step solutions for any math problem. From basic algebra to advanced calculus - understand not just the answer, but how to solve it.
MathSolve linear and quadratic equations instantly with step-by-step explanations. Free math equation solver shows detailed solutions, graphs, and methods for algebra problems.
MathSolve algebra equations with detailed step-by-step solutions. Perfect for homework help, test preparation, and understanding mathematical concepts.
MathProfessional-grade scientific calculator in your browser. Handle complex calculations with trig, logs, statistics, and more - perfect for students and engineers.
MathMaster percentages in seconds - calculate tips, discounts, tax, markup, and more. See percentage increases/decreases with real-world examples that make sense.
MathMore than just years - calculate your exact age down to the second! Find out what day you were born, days until your next birthday, and fun age facts.
OtherSimplify payroll with automatic overtime calculations. Track multiple weeks, handle breaks, night shifts, and export timesheets. Perfect for freelancers and HR departments.
OtherCalculate work hours, overtime, and pay from time clock entries. Track daily hours, calculate overtime pay, and manage multiple time entries with our free time tracking calculator.
OtherCalculate concrete volume, materials, and costs for your construction project. Includes mix design, curing timeline, and project planning tools.
OtherCalculate Amazon FBA fees, profit margins, and ROI for your products. Includes fulfillment fees, storage costs, referral fees, and complete profitability analysis.
Calculate your 2024 federal and state income taxes with the latest tax brackets, deductions, and credits. Get instant estimates of your tax liability, refund, and effective tax rate.
Stop undercharging! Calculate your true hourly rate including hidden costs like taxes, healthcare, and unpaid time. Get data-driven pricing that covers all expenses plus profit.
See the true cost of homeownership beyond monthly payments. Compare 15 vs 30-year terms, visualize interest savings with extra payments, and understand how rate changes impact your budget.
Get instant mortgage estimates in seconds. Perfect for house hunting - quickly check if that dream home fits your budget before scheduling viewings.
Maximize your VA loan benefits with zero down payment options. See how much home you can afford, calculate funding fees, and compare savings versus conventional loans.
Specialized VA home loan calculator with zero down payment options and military benefits.
Calculate VA mortgage payments with military-specific benefits and no PMI requirements.
Universal loan calculator for any borrowing need. Compare different loan terms side-by-side, see total interest costs, and discover how extra payments can save thousands.
Calculate monthly car payments, total interest, and loan terms for vehicle financing.
Calculate simple and compound interest for loans, investments, and savings accounts.
Calculate monthly payments for loans, mortgages, and financing with various terms.
Will your savings last through retirement? Find out if you're on track, see how much you need to save monthly, and discover the power of starting early with compound growth visualization.
Generate detailed amortization schedules showing principal and interest breakdown over time.
Calculate investment returns, compound growth, and portfolio value over time.
Convert between different currencies with real-time exchange rates.
Calculate the impact of inflation on purchasing power and future value of money.
All-in-one financial calculator for loans, investments, and money calculations.
Calculate how to pay off your mortgage early with extra payments and see interest savings.
Calculate federal and state income taxes, deductions, and tax refunds.
Calculate your 2024 federal and state income taxes with our comprehensive tax calculator. Get instant estimates of tax liability, refunds, and see detailed tax bracket breakdowns.
Calculate your 2025 federal and state taxes with updated brackets and deductions. Estimate refunds, discover tax-saving strategies, and optimize your tax situation.
Watch your money multiply! See how $100/month can become $500k+ over time. Interactive charts show the magic of compound interest and why Einstein called it the 8th wonder.
Convert between hourly, weekly, monthly, and annual salary amounts.
Know your exact take-home pay before accepting a job offer. Factor in federal/state taxes, 401k, health insurance, and see how bonuses or raises impact your net income.
Complete payroll solution for businesses. Calculate employee costs including FICA, unemployment taxes, and benefits. See the true cost of hiring and ensure accurate paychecks.
Calculate 401k contributions, employer matching, and retirement savings growth.
Calculate interest rates for loans, investments, and financial products.
Calculate sales tax amounts and total costs including tax for purchases.
Determine how much house you can afford based on income, debts, and down payment.
Calculate savings growth with regular deposits and compound interest over time.
Calculate rental affordability and compare rent vs buy scenarios.
Compare renting vs buying with comprehensive financial analysis. Calculate monthly costs, net worth projections, break-even points, and discover which option builds more wealth over time.
Calculate Annual Percentage Yield (APY), compare compound vs simple interest, analyze real returns after taxes and inflation. Free APY calculator with detailed savings projections.
Calculate your net worth by tracking assets and liabilities. Get detailed analysis of your financial health, asset allocation, debt ratios, and personalized recommendations for wealth building.
Calculate tax implications of marriage and filing status changes.
Calculate federal and state estate taxes for inheritance planning.
Calculate pension benefits and retirement income from defined benefit plans.
Estimate Social Security benefits and optimal claiming strategies.
Calculate annuity payments, present value, and future value of annuities.
Calculate annuity payout options and monthly payment amounts.
Calculate credit card payments, interest costs, and payoff time.
Calculate strategies to pay off multiple credit cards and save on interest.
Calculate debt payoff strategies including snowball and avalanche methods.
Calculate savings from consolidating multiple debts into one loan.
Calculate loan repayment schedules and total costs for various loan types.
Calculate student loan payments, interest costs, and repayment options.
Calculate total college costs and plan for education expenses.
Calculate simple interest for loans, investments, and savings.
Calculate certificate of deposit returns and compare CD rates.
Calculate bond yields, prices, and investment returns for government and corporate bonds.
Calculate Roth IRA contributions, growth, and tax-free retirement income.
Calculate traditional and Roth IRA contributions, growth, and distributions.
Calculate required minimum distributions from retirement accounts.
Calculate Value Added Tax (VAT) for purchases and business transactions.
Compare cash back offers vs low interest rates for credit cards and loans.
Calculate auto lease payments, terms, and compare lease vs buy options.
Calculate asset depreciation using various methods for tax and accounting.
Calculate average investment returns and annualized performance.
Calculate discounts, sale prices, and percentage savings on purchases.
Calculate business loan payments, rates, and terms for commercial financing.
Unlock your home's hidden value. Calculate available equity, compare HELOC vs cash-out refinancing, and see monthly payments for different borrowing amounts.
Calculate how much you can borrow against your home equity. Compare home equity loans vs HELOCs, estimate monthly payments, and understand closing costs.
Calculate debt-to-income ratio for mortgage qualification and financial health.
Calculate real estate investment returns, cash flow, and property analysis.
Calculate take-home pay after taxes, deductions, and benefits.
Calculate personal loan payments, rates, and terms for unsecured loans.
Calculate boat loan payments, rates, and terms for marine financing.
Calculate lease payments for vehicles, equipment, and property leases.
Calculate savings from refinancing mortgages and loans with new rates.
Create and manage personal budgets with income and expense tracking.
Calculate Return on Investment for business projects and investments.
Calculate profit margin, markup percentage, and break-even analysis. Convert between margin and markup, analyze profitability, and determine pricing strategies.
Calculate Annual Percentage Rate for loans and credit products.
Calculate FHA loan payments, mortgage insurance, and qualification requirements.
Calculate down payment requirements and savings goals for home purchases.
Calculate future value of investments with compound growth.
Calculate sales commissions, fees, and commission-based earnings.
Calculate stock investment returns, analyze dividend yields, and evaluate portfolio performance. Includes comprehensive analysis of capital gains, dividends, tax implications, and risk metrics.
Calculate capital gains taxes on stocks, real estate, and investments. Optimize holding periods, compare short-term vs long-term rates, and discover tax-saving strategies.
Calculate UK mortgage payments with British lending standards and rates.
Calculate Canadian mortgage payments with CMHC insurance and Canadian rates.
Calculate discounted prices and percentage savings on purchases.
Calculate mortgage insurance costs and discover when you can remove PMI. Compare loan options and explore strategies to eliminate mortgage insurance faster.
Calculate foreign exchange rates and currency conversions with real-time analysis. Compare transfer methods, fees, and get the best rates for international money transfers.
Calculate Net Present Value for investment analysis and capital budgeting decisions. Evaluate projects with IRR, payback period, and profitability metrics.
Calculate payments, interest costs, and payoff strategies for personal lines of credit, HELOCs, and business credit lines. Compare options and optimize your borrowing.
Convert hourly wages to annual salary and calculate take-home pay after taxes. Includes overtime, bonuses, deductions, and tax calculations.
Calculate net pay, taxes, and deductions for accurate paycheck estimation. Includes federal, state, FICA taxes, 401k, and benefits.
Calculate savings growth with compound interest, set financial goals, and optimize your saving strategy. Includes investment portfolio analysis and emergency fund planning.
Know your health status instantly. Calculate BMI with personalized insights - are you in the healthy range? Get actionable recommendations based on your results.
Beyond basic BMI - get visual charts showing exactly where you stand, health risk assessment, and customized action plans for reaching your ideal weight range.
Stop guessing your calorie needs! Get precise daily targets for your goals - lose 2 lbs/week safely or bulk up effectively. Includes meal timing and macro breakdowns.
Calculate your daily calorie needs, create a calorie deficit for weight loss, and track macros. Get personalized TDEE, BMR, and macro recommendations.
Veterinary-grade cat nutrition calculator using proven RER formulas. Calculate accurate daily calories for weight management, safe weight loss, kittens & senior cats. Includes body condition scoring.
Calculate body fat percentage using various measurement methods and formulas.
Discover your metabolic baseline - how many calories you burn doing absolutely nothing. Essential for creating effective diet plans that actually work for your body.
Calculate optimal macronutrient ratios for your fitness and diet goals.
Calculate ideal body weight using various medical formulas and methods.
Calculate pregnancy timeline, due date, and fetal development milestones.
Calculate body fat percentage using U.S. Army standards and measurements.
Calculate daily carbohydrate needs for athletic performance and health goals.
Calculate calories burned during exercise and daily activities.
The most accurate calorie calculator - factors in your activity level, exercise, and lifestyle. Know exactly how much to eat whether you're cutting, bulking, or maintaining.
Calculate best times for conception and fertility tracking.
Determine body type (ectomorph, mesomorph, endomorph) for fitness planning.
Calculate body surface area for medical dosing and health assessments.
Calculate Blood Alcohol Content and estimate alcohol metabolism time.
Calculate BMI with focus on underweight and eating disorder assessment.
Calculate your optimal keto macros for weight loss, muscle gain, or therapeutic ketosis. Get personalized fat, protein, and carb targets based on your body stats and goals.
Stuck on homework? Get instant step-by-step solutions for any math problem. From basic algebra to advanced calculus - understand not just the answer, but how to solve it.
Solve linear and quadratic equations instantly with step-by-step explanations. Free math equation solver shows detailed solutions, graphs, and methods for algebra problems.
Solve algebra equations with detailed step-by-step solutions. Perfect for homework help, test preparation, and understanding mathematical concepts.
Professional-grade scientific calculator in your browser. Handle complex calculations with trig, logs, statistics, and more - perfect for students and engineers.
Add, subtract, multiply, and divide fractions with step-by-step solutions.
Master percentages in seconds - calculate tips, discounts, tax, markup, and more. See percentage increases/decreases with real-world examples that make sense.
Calculate triangle area, perimeter, angles, and sides using various methods.
Calculate volume of spheres, cylinders, cones, and other 3D shapes.
Calculate standard deviation, variance, and statistical measures.
Generate random numbers within specified ranges and parameters.
Find patterns and calculate terms in arithmetic and geometric sequences.
Calculate percent error between experimental and theoretical values.
Calculate powers, exponents, and exponential expressions.
Convert between binary, decimal, hexadecimal, and octal number systems.
Convert and calculate with hexadecimal numbers and operations.
Calculate radioactive decay and half-life of substances.
Solve quadratic equations using the quadratic formula with step-by-step solutions.
Calculate slope, y-intercept, and linear equations from two points.
Calculate logarithms with various bases including natural and common logs.
Calculate area of circles, rectangles, triangles, and other geometric shapes.
Calculate required sample size for statistical studies and surveys.
Calculate probability of events, combinations, and statistical outcomes.
Calculate statistical measures including mean, median, mode, and distribution.
Calculate confidence intervals for population means and proportions.
Calculate and simplify ratios, proportions, and scaling factors.
Calculate distance between points in 2D and 3D coordinate systems.
Calculate circle area, circumference, radius, and diameter.
Calculate missing sides of right triangles using the Pythagorean theorem.
Calculate square roots, cube roots, and nth roots of numbers.
Find all factors and prime factorization of any number.
Perform matrix operations including addition, multiplication, and determinants.
Convert to and from scientific notation and perform calculations.
Calculate with very large numbers beyond standard calculator limits.
Find common factors between two or more numbers.
Simple calculator for basic arithmetic operations and everyday math.
Calculate arithmetic mean, weighted average, and other average types.
More than just years - calculate your exact age down to the second! Find out what day you were born, days until your next birthday, and fun age facts.
Calculate differences between dates and add/subtract days from dates.
Add, subtract, and calculate time durations in hours, minutes, and seconds.
Calculate hours worked, time differences, and hourly calculations.
Simplify payroll with automatic overtime calculations. Track multiple weeks, handle breaks, night shifts, and export timesheets. Perfect for freelancers and HR departments.
Calculate work hours, overtime, and pay from time clock entries. Track daily hours, calculate overtime pay, and manage multiple time entries with our free time tracking calculator.
Calculate GPA (Grade Point Average) for high school and college students.
Calculate final grades, weighted grades, and grade requirements.
Calculate concrete volume, bags needed, and material costs for projects.
Calculate concrete volume, materials, and costs for your construction project. Includes mix design, curing timeline, and project planning tools.
Calculate IP subnets, CIDR notation, and network addressing.
Calculate bra size based on measurements and sizing charts.
Generate secure passwords with customizable length and character sets.
Roll virtual dice with various sides for games and probability.
Convert between various units of measurement and currencies.
Calculate fuel costs for trips based on distance, MPG, and gas prices.
Calculate voltage drop in electrical circuits and wire sizing.
Calculate BTU requirements for heating and cooling systems.
Calculate square footage of rooms, houses, and irregular shapes.
Calculate work hours, overtime, and payroll from time cards.
Convert time between different time zones around the world.
Fun love compatibility calculator based on names and birthdates.
Calculate fuel efficiency, MPG, and gas consumption for vehicles.
Calculate tips, split bills, and total costs for restaurant dining.
Calculate density using mass and volume for physics and chemistry.
Calculate speed, velocity, and convert between speed units.
Calculate optimal sleep and wake times based on sleep cycles.
Calculate roofing materials, shingles needed, and roofing costs.
Calculate network bandwidth requirements and data transfer rates.
Find what day of the week any date falls on.
Master complex topics with our in-depth guides and tutorials
Everything about home financing: types, rates, calculations, first-time buyer tips, and money-saving strategies.
Read Guide →Master tax strategies: deductions, credits, retirement planning, and year-end moves to minimize your tax bill.
Read Guide →Complete fitness journey: BMI, calories, macros, workout planning, and achieving your health goals.
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