Free Online Calculators

Fast, accurate calculators that run entirely in your browser — instant results, private, no uploads.

• 401k CalculatorProject your 401k balance with contributions and employer match. See growth, total contributions and retirement value after compounding.
• Age CalculatorFind your exact age in years, months and days — plus total days, weeks and mon…
• Annuity CalculatorFree annuity calculator: enter principal, rate, years and payout frequency to see the future value and total growth. Instant and private.
• Attendance CalculatorCalculate attendance percentage and how many classes you can miss to stay above the threshold.
• Auto Loan Calculator - Car Payment (US)Free US auto loan calculator: enter the car price, down payment, interest rate and term to estimate your monthly payment, total interest and total cost.
• Average CalculatorFind the mean, median and mode of any list of numbers — instantly and privatel…
• Basic CalculatorA simple, free calculator online with +, −, ×, ÷, % and √.
• BMI CalculatorCalculate your Body Mass Index and see your healthy-weight range, instantly an…
• BMR CalculatorEstimate your basal metabolic rate with Mifflin-St Jeor and see TDEE by activity level.
• Body Fat CalculatorFree US Navy body fat calculator. Enter height, neck, waist and hip to estimate your body fat %, fat mass and lean mass. Instant and private.
• Budget CalculatorFree budget calculator: enter your monthly income and expenses to see your total budget, remaining savings, savings rate and a 50/30/20 split.
• Business Days CalculatorCount working days between two dates and add or subtract business days.
• CAGR CalculatorFree CAGR calculator: enter initial value, final value and years. Get the compound annual growth rate as a percentage, instantly in your browser.
• Calorie CalculatorFind your maintenance calorie needs using the Mifflin-St Jeor equation, based …
• Calorie Deficit CalculatorCalculate your calorie deficit: find TDEE, daily calorie target, weekly weight loss and the time it takes to reach your goal weight.
• Capital Gains Calculator - Tax Estimate (US)Free US capital gains calculator: enter your cost basis and sale price to estimate your gain and the tax owed at short-term or long-term rates.
• CD Calculator (Certificate of Deposit)Calculate your Certificate of Deposit maturity value and interest earned. Enter principal, APY and term in months to see your CD grow.
• CGPA CalculatorCalculate your cumulative CGPA from semester GPAs and credits, then convert it to a percentage — for Indian universities. Free, private, in your browser.
• Compound Interest CalculatorSee how an investment or loan grows with compound interest over time using the…
• Cooking Measurement ConverterConvert cups, tablespoons, teaspoons, fluid ounces and grams for recipes.
• Countdown TimerFree online countdown timer: set hours, minutes and seconds, then start, pause or reset. See the remaining time and get a Time up alert.
• Credit Card Payoff CalculatorSee how long it takes to pay off a credit card balance and how much interest you will pay.
• Currency ConverterFree live currency converter. Convert USD, EUR, GBP, INR, JPY, AUD and 30+ currencies using up-to-date ECB rates. Fast, private, no signup — works in your browser.
• Date Difference CalculatorCount the days, weeks, months and years between two dates — with an optional b…
• Debt Payoff CalculatorPlan snowball or avalanche debt payoff and see your payoff date and total interest.
• Discount CalculatorWork out the sale price and how much you save — including stacked discounts.
• Dividend CalculatorFree dividend calculator: enter investment, share price, yield and years — with DRIP — to see annual income and growth. Instant & private.
• Down Payment CalculatorEstimate the down payment, loan amount and monthly principal-and-interest payment for your home purchase.
• EMI CalculatorWork out your monthly loan payment, total interest and total payable. Enter yo…
• EPF Calculator (India)Free EPF calculator for India: enter basic salary and years to see employee & employer 12% contributions, total invested and estimated corpus.
• FD CalculatorFree FD calculator for India: enter principal, annual rate, tenure and compounding frequency. See maturity amount, interest earned and total value.
• Final Grade CalculatorFind the score you need on your final exam to finish at your target grade.
• Fraction CalculatorAdd, subtract, multiply and divide fractions and get a simplified answer — ins…
• Fuel Cost CalculatorTrip fuel cost and cost per mile from distance, MPG and gas price.
• Gold Loan CalculatorFree gold loan calculator for India: enter gold value, LTV ratio, annual rate and tenure to find the loan amount, monthly EMI and total interest.
• GPA CalculatorCompute your weighted grade point average on a standard 4.0 scale. List your c…
• Grade CalculatorFree grade calculator: enter your assignment grades and weights to get your overall grade and the score you need on the final exam to hit your target.
• Gratuity Calculator (India)Free gratuity calculator for India: enter basic + DA and years of service for the payout under the Payment of Gratuity Act 1972 (15/26 rule).
• GST CalculatorFree online GST calculator for India. Add GST to a price or remove GST from an i…
• Heart Rate Zone CalculatorCalculate your heart rate zones from age and optional resting HR: get 5 zones with intensity and bpm ranges using the standard or Karvonen method.
• Home Equity Loan CalculatorFree home equity loan calculator: enter home value and mortgage balance to find available equity, loan-to-value ratio and a fixed monthly payment.
• HRA Calculator (India)Free HRA calculator for India: find exempt and taxable HRA under Rule 2A from basic salary, HRA received and rent, for metro or non-metro.
• Ideal Weight CalculatorFree ideal weight calculator. Enter your gender and height to get your ideal body weight and a healthy +/-10% range in both kg and lbs.
• Income Tax CalculatorEstimate your income tax and take-home pay from your annual income and a tax r…
• Income Tax New Regime Calculator India (FY 2025-26)Free India income tax calculator: enter gross salary and NPS deductions to get taxable income and tax estimate under new regime slabs.
• Inflation CalculatorFree inflation calculator: enter an amount, inflation rate and years to see future cost and real purchasing power. Instant & private.
• Investment CalculatorFree investment calculator. Project your future value from an initial amount, monthly contributions and annual return with monthly compounding.
• Invoice GeneratorCreate a professional invoice with line items, tax and discount, then print or save it as a PDF.
• Lean Body Mass CalculatorFind your lean body mass, body fat mass and lean percentage with the Boer formula.
• Loan Affordability CalculatorFind the maximum loan you can comfortably afford and its monthly EMI using a 40% debt-to-income rule.
• LTCG CalculatorCompute India long-term capital gains tax on equity, property, gold and debt, in INR.
• Macro CalculatorWork out your daily protein, carbs and fat targets from your age, height, weight and activity — uses the Mifflin-St Jeor equation.
• Miles Per Gallon (MPG) CalculatorFuel economy, cost per mile and trip cost from miles and gallons.
• Mortgage Affordability CalculatorSee how much house you can afford from your income, debts and down payment, with a full PITI breakdown.
• Mortgage CalculatorEstimate your monthly mortgage payment (EMI) and total interest for any loan a…
• Mortgage Payment CalculatorMonthly US mortgage payment with principal, interest, property tax, insurance, HOA and PMI.
• Mutual Fund CalculatorEstimate the future value of a monthly SIP or lumpsum mutual fund investment with compounding.
• Mutual Fund Lumpsum CalculatorFree mutual fund lumpsum calculator for India: enter amount, expected return and years to see the future value, invested and growth.
• Net Worth CalculatorFree net worth calculator: add your assets and liabilities to see your net worth and debt-to-asset ratio.
• NPS CalculatorFree NPS calculator for India: enter monthly contribution, expected return and years to see the corpus, growth and annuity at retirement.
• Overtime CalculatorCalculate overtime pay at time-and-a-half for hours beyond a standard workweek.
• Ovulation CalculatorEstimate your ovulation day, fertile window and next period from your cycle.
• Paycheck Calculator (USA)Estimate your US take-home pay: gross income, pay period, filing status and state. See federal income tax, FICA and net pay per paycheck.
• Pension CalculatorFree pension calculator: enter desired monthly income, return rate and years to see the lump sum needed today vs the income it provides.
• Percentage CalculatorFind a percent of a number, what percent one number is of another, or percenta…
• Pomodoro TimerFree pomodoro timer: run 25 minute focus blocks with 5 minute breaks and a long break every 4 sessions. Beeps…
• PPF Calculator (India)Free PPF calculator for India: enter monthly contribution, rate and tenure for maturity value, total invested and interest earned.
• Pregnancy Due Date CalculatorFind your estimated due date, current gestational age and trimester from your last period.
• Property Tax Calculator - Annual Home Tax (US)Free US property tax calculator: enter your home value and local property tax rate to estimate your annual property tax and monthly escrow payment.
• Protein Intake CalculatorDaily protein target in grams from your weight, activity level and goal — automatically set per kg.
• Quadratic Equation SolverSolve an equation of the form ax² + bx + c = 0 and find its roots, with the di…
• Ratio CalculatorScale a ratio A:B by a factor and see the equivalent and simplified ratio.
• Recurring Deposit (RD) CalculatorFree RD calculator for India: monthly deposit, rate and years to get maturity value, total deposited and interest with quarterly compounding.
• Refinance Calculator - Payment Savings (US)Free US refinance calculator: compare your old and new monthly payment, see your monthly savings and how many months to break even on closing costs.
• Rent vs Buy CalculatorFree rent vs buy calculator for US homes: the real monthly and total cost of renting and buying in USD, plus…
• Retirement CalculatorFree retirement calculator. Enter your age, savings, monthly contributions and return to see if your retirement corpus covers your annual expenses.
• ROI CalculatorFree online ROI calculator for India. Enter your initial investment and final va…
• Roth IRA CalculatorFree Roth IRA calculator: enter your balance, monthly contribution, rate and years to see projected balance, total contributions and growth.
• Rounding CalculatorRound a number to the nearest whole number, decimal place or power of ten.
• Running Pace CalculatorWork out your running pace, speed and finish time in minutes per km or mile.
• Salary CalculatorConvert between an hourly rate and an annual salary. Pick a direction, enter y…
• Sales Tax CalculatorAdd a sales tax rate to an amount and instantly see the tax charged and the to…
• Savings Goal CalculatorFree savings goal calculator: set a target amount, timeframe and expected return to find the monthly saving needed to reach it.
• Scientific CalculatorA full scientific calculator — trigonometry, logarithms, powers, roots, pi and…
• Simple Interest CalculatorFind the simple interest and total amount for any principal, rate and time — i…
• SIP CalculatorFree SIP calculator for India: enter monthly investment, annual return and years with monthly compounding. See invested amount, estimated returns and total value.
• Sleep CalculatorFind your best bedtime or wake-up time using 90-minute sleep cycles and a fall-asleep buffer.
• Square Root CalculatorFind the square root of any number, or compute any other root like a cube root…
• Standard Deviation CalculatorFind the standard deviation, variance and mean of any data set — for a populat…
• STCG CalculatorCompute India short-term capital gains tax at 15% or your income-tax slab, in INR.
• Stopwatch OnlineFree online stopwatch with Start, Pause, Reset and Lap. Shows minutes, seconds and centiseconds, and runs accurately in your browser.
• Student Loan CalculatorEstimate your student loan payment and interest. Enter balance, rate and term to see monthly payment, total interest — and how extra payments speed payoff.
• TDEE CalculatorFree TDEE calculator. Enter your age, height, weight and activity to get your BMR, daily energy expenditure and calorie targets. Instant & private.
• TDS Calculator (India)Free TDS calculator for India: estimate taxable income and income tax on your salary under the old or new regime, with 80C and 80D deductions.
• Temperature ConverterCelsius, Fahrenheit and Kelvin side by side.
• Test Grade CalculatorEnter total and correct answers to get your percentage and letter grade.
• Tip CalculatorWork out the tip and split the bill evenly between friends — in your browser, …
• Unit ConverterConvert length, weight, temperature and volume units instantly.
• VAT CalculatorAdd or remove VAT from any amount using UK and EU rates, including a custom rate.
• Waist to Hip Ratio CalculatorMeasure waist-to-hip ratio and see your health category by WHO cut-offs.
• Water Intake CalculatorEstimate your daily water needs from your weight — shown in litres and in glas…