Calculators
Financial, math, and unit conversion calculators
Retirement 401(k) Calculator
PopularCalculate 401(k) retirement savings with employer matching, contribution limits, and tax-advantaged growth. Project retirement balance with interactive charts and see the impact of catch-up contributions for age 50+.
Age Calculator
Calculate your exact age in years, months, days, hours, minutes and seconds. Get your next birthday
Amortization Calculator
Calculate loan amortization schedule with detailed monthly payment breakdown. See principal vs interest payment split, remaining balance, and export complete amortization table to CSV.
APR Calculator
Calculate Annual Percentage Rate (APR) including all fees and costs. Compare APR vs nominal interest rate to understand true borrowing costs.
Aspect Ratio Calculator
Calculate aspect ratios, resize images and videos while maintaining proportions. Perfect for video editing,
Auto Loan Calculator
Calculate monthly car loan payments, total interest, and amortization schedule. Compare auto loan terms, APR rates, and see how trade-ins and down payments affect your monthly payment.
Blood Alcohol Calculator (BAC)
Calculate your estimated blood alcohol content (BAC) based on drinks consumed, body weight, gender, and time elapsed. Free online BAC calculator with Widmark formula.
Blood Pressure Tracker
Track and analyze blood pressure readings over time. Get category classification (normal, elevated, hypertension), view trends, and export your blood pressure history.
BMI Calculator
Calculate your Body Mass Index (BMI) instantly. Get your BMI score, category, and healthy weight
BMR Calculator - Basal Metabolic Rate & TDEE
Calculate your BMR (Basal Metabolic Rate) and TDEE (Total Daily Energy Expenditure) instantly. Get
Body Fat Calculator
Calculate your body fat percentage using the US Navy method or BMI estimation. Get accurate body
Body Surface Area Calculator (BSA)
Calculate body surface area using Mosteller, DuBois, or Haycock formulas. BSA is used in medical dosing, burn assessment, and cardiac index calculations.
Body Type Calculator
Determine your body type (ectomorph, mesomorph, endomorph) based on measurements and characteristics. Get personalized fitness and nutrition recommendations for your body type.
Bond Calculator
Calculate bond yields, coupon payments, and returns. Get current yield, yield to maturity (YTM), and total return analysis for bonds.
Break-Even Calculator
Calculate break-even point in units and revenue for single or multiple products. Analyze contribution margin, margin of safety, and weighted average calculations for business profitability.
Calorie Burn Calculator - Calculate Calories Burned
Calculate calories burned during 50+ activities including cardio, strength training, sports, and daily
Calorie Calculator
Calculate your daily calorie needs based on your BMR (Basal Metabolic Rate) and TDEE (Total Daily Energy
Calorie Deficit Calculator
Calculate your daily calorie deficit for weight loss. Get personalized calorie targets based on your TDEE, weight loss goals, and timeline. Safe and sustainable deficit recommendations.
Capital Gains Tax Calculator
Calculate capital gains tax with 2024 federal tax brackets for short-term and long-term gains. Includes Net Investment Income Tax (NIIT) for high earners and supports all filing statuses.
Carb Calculator
Calculate your daily carbohydrate needs based on activity level, diet type, and fitness goals. Get personalized carb targets for keto, low-carb, balanced, and high-carb diets.
Cash Flow Calculator
Track and analyze cash inflows and outflows by category. Calculate net cash flow, running balance, and view timeline for better financial planning.
Cholesterol Calculator
Calculate cholesterol ratios (total/HDL, LDL/HDL) and assess cardiovascular risk. Get cholesterol level interpretation with optimal, borderline, and high-risk categories.
College Savings Calculator
529 plan projections and education cost planning calculator. Calculate future college costs with inflation, determine required monthly savings, and track progress toward education funding goals with detailed year-by-year breakdown.
Compound Interest Calculator
Calculate how your money grows with compound interest. See future value, total interest earned, and year-by
Concrete Calculator
Calculate concrete volume for slabs, footings, columns, stairs, and walls. Get cubic yards, cubic feet, and number of 60lb/80lb bags needed with waste factor.
Countdown Timer
Set a customizable countdown timer with alarm. Perfect for cooking, workouts, studying, or any
Credit Card Payoff Calculator
Calculate how long it will take to pay off your credit card debt. See total interest paid, payoff timeline, and monthly breakdown.
Credit Score Simulator
Simulate the impact of financial decisions on your credit score. See how paying debt, opening accounts, or closing cards affects your score. 100% free and private.
Cryptocurrency Converter
Convert between cryptocurrencies and fiat currencies instantly. Support for Bitcoin, Ethereum, Solana, and
Currency Converter
Convert between 25+ world currencies instantly. Enter an amount, select currencies, and see the conversion
Date Calculator
Calculate date differences, add/subtract days, find business days, and get week numbers. Fast, free, and co
Debt Payoff Calculator
Calculate debt payoff timelines and strategies. Model snowball and avalanche methods to eliminate debt efficiently.
Depreciation Calculator
Calculate asset depreciation using straight-line, declining balance, or sum-of-years digits methods. Generate depreciation schedules and track book value over time.
Diabetes Risk Calculator
Assess your diabetes risk based on age, BMI, family history, and lifestyle factors. Get personalized risk score and prevention recommendations for type 2 diabetes.
Discount Calculator
Calculate discounts, sale prices, and savings with support for percentage or fixed amount discounts
Dividend Calculator
Calculate dividend yield, annual income, DRIP projections, and payout ratios. Free stock dividend calculator with growth projections. All calculations happen in your browser.
Down Payment Calculator
Calculate down payment, loan amount, PMI costs, and total cash needed for home purchases. Compare conventional, FHA, and VA loans.
Early Retirement Calculator (FIRE)
Calculate your FIRE number, years to early retirement, and required savings rate. Plan Financial Independence Retire Early with Lean, Regular, and Fat FIRE options.
Estate Tax Calculator
Calculate estate and inheritance tax estimation by state with federal exemptions
FHA Loan Calculator
FHA mortgage calculator with MIP (mortgage insurance premium) and 3.5% down payment. Calculate upfront MIP (1.75%), annual MIP (0.55-0.85%), and compare with conventional loans.
File Size Calculator
Convert between file size units (B, KB, MB, GB, TB, PB) with binary and decimal modes. Calculate total stor
Fraction Calculator
Calculate and simplify fractions with step-by-step solutions. Add, subtract, multiply, and divide fractions
Freelance Rate Calculator
Calculate hourly and project rates with overhead costs, profit margin, and billable hours analysis. Perfect for freelancers and consultants to price services sustainably.
Fuel Cost Calculator
Calculate your trip fuel costs instantly. Support for both US (MPG) and metric (L/100km) systems. Perfect f
GPA Calculator
Calculate your Grade Point Average (GPA) for courses and semesters. Supports letter grades and numeric grad
Heart Rate Zones Calculator
Calculate your heart rate training zones based on max heart rate and resting heart rate. Get personalized zones for fat burning, cardio, and peak performance training.
HELOC Calculator
Home equity line of credit payment calculator with draw period and repayment period. Calculate HELOC borrowing capacity, interest-only payments, and principal + interest repayment.
Home Equity Calculator
Calculate home equity with appreciation and mortgage paydown. Project future equity buildup over time with detailed timeline analysis.
Hourly to Salary Calculator
Convert between hourly wage and annual salary instantly. Calculate daily, weekly, monthly, and yearly pay with customizable work schedules. Free bidirectional salary conversion calculator.
Inflation Calculator
Calculate purchasing power and inflation impact on money over time. Use historical CPI data from 1950-2024 or custom inflation rates to see how much your money is really worth after inflation.
Investment Calculator
Calculate investment returns with compound interest, regular contributions, dividends, inflation, and withdrawals. Project portfolio growth with interactive charts showing real vs nominal returns.
Lease Calculator
Calculate monthly lease payments for cars and equipment. Compare leasing versus buying costs with money fac
Loan Calculator
Calculate your monthly loan payment, total interest paid, and view a complete amortization schedule. Perfec
Loan Comparison Calculator
Side-by-side comparison of multiple loan offers with total cost analysis
Macros Calculator
Calculate your daily macronutrient needs (protein, carbs, fats) based on your TDEE and fitness goals. Get
Mortgage Calculator
Calculate your monthly mortgage payment including principal, interest, property tax, insurance, and PMI. Ge
Mortgage Refinance Calculator
Refinancing break-even analysis and savings calculation
Net Worth Calculator
Calculate your net worth by tracking assets and liabilities. Get debt-to-asset ratio analysis, category breakdowns, and financial health insights. Free personal finance calculator.
Overtime Calculator
Calculate overtime pay with time-and-a-half, double-time, and weekly/biweekly totals
Pace Calculator
Calculate running and cycling pace, speed, distance, and time. Get split times for standard race distances
Paint Calculator
Calculate paint needed for walls, ceilings, and trim with accurate coverage rates. Supports multiple coats, room dimensions, doors, windows, and custom coverage per gallon.
Password Strength Meter
Analyze password strength with detailed feedback and improvement suggestions. All analysis happens in your
Percentage Calculator
Calculate percentages, percentage increases, decreases, and more. 100% free and private - all calculations
Personal Loan Calculator
Calculate monthly payment, total interest, and amortization schedule for personal loans. Compare loan terms and see how extra payments reduce interest and payoff time.
Portfolio Calculator
Calculate investment portfolio returns, allocation percentages, and rebalancing recommendations. Track multiple assets with detailed performance analysis and diversification metrics.
Profit Calculator
Calculate business profit with revenue and expense analysis. Track margin percentages and profitability metrics
Profit Margin Calculator
Calculate gross margin, net margin, markup, and profit percentages for business. Compare margin vs markup with industry benchmarks and reverse pricing calculations.
Retirement Calculator
Calculate retirement savings needs and projections. See required savings, monthly contributions needed, and
Revenue Calculator
Calculate business revenue with unit sales, pricing, and revenue streams. Project monthly, quarterly, and annual revenue with growth rate analysis and forecasting.
ROI Calculator
Calculate return on investment (ROI) percentage, gain/loss amounts, and annualized returns. Perfect for ana
Roth IRA Calculator
Calculate Roth IRA growth and retirement savings with 2024 contribution limits, income phase-outs, and catch-up contributions. Project tax-free retirement income with compound interest.
Salary Calculator
Calculate salary conversions and tax deductions. Convert between hourly, weekly, monthly, and annual pay. Calculate federal, state, and FICA taxes to see your take-home pay.
Sales Tax Calculator
Calculate sales tax for all US states and territories. Add or remove tax from prices, compare state tax rates, and get total price with tax included instantly.
Sample Size Calculator
Calculate required sample size for surveys, research studies, and A/B tests with confidence intervals
Savings Calculator
Calculate savings growth with regular deposits and compound interest. Project your future savings value, track monthly progress, and see how interest compounds over time.
Savings Goal Calculator
Calculate how long it will take to reach your savings goal with regular monthly contributions and compound
Scientific Calculator
Advanced scientific calculator with trigonometric functions, logarithms, powers, and more. 100% free with f
Simple Interest Calculator
Calculate simple interest for loans and investments using I = P ร r ร t formula. Compare simple vs compound interest with detailed breakdown and monthly analysis.
Statistical Significance Calculator
Calculate p-values, confidence intervals, and determine statistical significance for A/B tests and experiments
Stock Profit Calculator
Calculate stock trading profit and loss with commission fees. Get ROI percentage, total investment, proceeds, and per-share profit instantly.
Stopwatch Timer
Precision stopwatch with lap timing, millisecond accuracy, and export functionality. Perfect for
Student Loan Calculator
Calculate student loan payments with standard, income-driven (PAYE, REPAYE, SAVE), and graduated repayment plans. See total interest paid and compare repayment strategies for federal and private student loans.
Tax Calculator
Calculate sales tax and VAT instantly. Add tax to a price or remove tax from a price with accurate calculat
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin temperature scales instantly. Real-time conversion as you
Time Zone Converter
Convert time between different time zones worldwide. Support for UTC, EST, PST, GMT, CET, JST, and more.
Tip Calculator
Calculate tip amounts and split bills between multiple people. Supports preset and custom tip percentages w
Unit Converter
Convert between units for length, weight, temperature, volume, and speed. Supports metric and imperial
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