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Start crunching numbers right away with the free scientific calculator, then explore 39+ fast, accurate tools for finance, health, education and math. No sign-up, no clutter — just answers.

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36FinanceMoney, loans & investing17HealthBody, fitness & nutrition4EducationGrades & GPA17MathEveryday & scientific4SalaryPay & wages3ShoppingDiscounts, tips & tax7Date & TimeAges, spans & days2TravelFuel & mileage
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Popular calculators

Mortgage CalculatorEstimate your monthly mortgage payment including principal, interest, property tax and home insurance.Loan CalculatorCalculate the monthly payment, total interest and total cost of any fixed-rate loan.Auto Loan CalculatorEstimate your car loan payment after down payment, trade-in and sales tax.Investment CalculatorProject the future value of an investment with regular contributions and compound growth.SIP CalculatorCalculate the maturity value and estimated returns of a monthly SIP or a one-time lumpsum investment, with an optional annual step-up.Compound Interest CalculatorCalculate compound interest with any compounding frequency and optional regular deposits.BMI CalculatorCalculate your Body Mass Index with age and sex for a clearer, more personal reading of your weight.TDEE CalculatorFind your Total Daily Energy Expenditure — the calories you burn each day including activity.
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Money, loans & investing

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Mortgage CalculatorEstimate your monthly mortgage payment including principal, interest, property tax and home insurance.Loan CalculatorCalculate the monthly payment, total interest and total cost of any fixed-rate loan.Auto Loan CalculatorEstimate your car loan payment after down payment, trade-in and sales tax.Car Payment CalculatorQuickly find the monthly payment for a car loan from the amount, rate and term.Investment CalculatorProject the future value of an investment with regular contributions and compound growth.SIP CalculatorCalculate the maturity value and estimated returns of a monthly SIP or a one-time lumpsum investment, with an optional annual step-up.
Health

Body, fitness & nutrition

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BMI CalculatorCalculate your Body Mass Index with age and sex for a clearer, more personal reading of your weight.BMR CalculatorEstimate your Basal Metabolic Rate — the calories your body burns at complete rest.TDEE CalculatorFind your Total Daily Energy Expenditure — the calories you burn each day including activity.Calorie CalculatorWork out how many calories you should eat per day to lose, maintain or gain weight.Macro CalculatorSplit a daily calorie target into protein, carbohydrate and fat grams.Water Intake CalculatorEstimate how much water you should drink each day based on your weight and activity.
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Everyday & scientific

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Basic CalculatorA fast online calculator for everyday arithmetic — add, subtract, multiply and divide.Scientific CalculatorOnline scientific calculator with trig, logarithms, powers, roots and constants.Percentage CalculatorSolve any percentage problem — percent of a number, what percent, and percent change.Fraction CalculatorAdd, subtract, multiply and divide fractions and get the answer in lowest terms.Average & Mean Median Mode CalculatorCalculate the mean, median, mode, range and sum of a set of numbers.Exponent Calculator — Calculate Powers and ExponentsCalculate exponents, powers, roots, and scientific notation instantly.

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The free online calculator for everyday math and big decisions

Try Online Calculator is a free online calculator hub that brings every calculation you need into one fast, clutter-free place. Instead of hunting for a different website every time, you get 90+ purpose-built tools — from a simple online calculator for quick sums to a full scientific calculator for trigonometry, logarithms and exponents. It behaves like a proper calculator app right in your tab: no install, no download, and no account. Every calculator runs instantly in your browser, works on phones and desktops, and never asks you to share your data.

Finance, loan and mortgage calculators

Planning money decisions is easier with the right numbers in front of you. Use themortgage calculator to estimate a monthly home payment with principal, interest, tax and insurance, or check what you can afford before you shop. The loan calculator doubles as an EMI calculator, working out the equated monthly instalment on any personal loan, while theauto loan calculator andcar payment calculator show the true cost of financing a vehicle, interest included. Looking further ahead? Theinvestment calculator andcompound interest calculator work as an SIP calculator too, projecting how regular monthly deposits and compounding grow your savings over time, while theinterest calculator shows exactly how much interest you pay or earn on any balance.

Health, BMI and calorie calculators

Take charge of your wellbeing with trusted health tools. The freeBMI calculator tells you where your body mass index sits, and the calorie calculator andTDEE calculator estimate the daily energy you burn so you can plan weight loss, maintenance or gain. Pair them with theBMR and macrocalculators to fine-tune nutrition. Every formula follows the same equations used by clinicians and coaches, and each result page explains what the numbers mean.

Education, GPA and grade calculators

Students rely on our GPA calculator to track college performance, the grade calculator to score a test or assignment, and the final grade calculatorto find out exactly what they need on the final exam to hit a target. It removes the last-minute guesswork before results day.

Math, dates, salary and more

For homework and quick checks, use our tools as a lightweight math solver: thepercentage calculator,fraction calculator andaverage calculator break every step down for you. Need a date answer? Theage calculator gives your exact age by date of birth, and the date calculator and working-days tools measure any span between two dates. Working professionals use the salary calculator andpaycheck calculator to convert between hourly, weekly, monthly and annual pay and estimate take-home earnings, while shopping tools handle discounts, tips and sales tax. Need to switch units? Theunit converter handles length, weight, temperature, speed, volume, area and currency conversions in one place.

Whether you need a scientific calculator, a mortgage calculator, a percentage calculator or a simple free calculator for everyday sums, everything here is fast, accurate and free to use. Bookmark Try Online Calculator and keep the calculator you need one click away.

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Frequently asked questions

Using the calculators

Are these online calculators free to use?
Yes. Every calculator on Try Online Calculator is completely free, with no sign-up, no download and no limits on how often you use it.
Are online calculators accurate?
Yes. Each tool uses the same standard formulas that banks, clinicians, teachers and accountants rely on, and every result page shows the formula and a worked example so you can check the math yourself.

Math & percentages

How do I calculate percentages?
To find a percentage of a number, multiply the number by the percent and divide by 100 — for example, 20% of 150 is 150 × 20 ÷ 100 = 30. The percentage calculator does every variation for you and shows the steps.
How do I calculate percentage increase?
Subtract the old value from the new value, divide by the old value, then multiply by 100. For example, going from 40 to 50 is (50 − 40) ÷ 40 × 100 = 25% increase. Try the percentage calculator.

Loans, mortgages & finance

How do I calculate mortgage payments?
A mortgage payment combines principal, interest, property tax and insurance (PITI). The mortgage calculator breaks down your full monthly payment and total interest across the loan term.
How do I calculate EMI or monthly loan payments?
Enter the loan amount, interest rate and term into the loan calculator and it returns the equated monthly instalment (EMI) plus the total interest you will pay over the life of the loan.
How do I calculate compound interest?
Compound interest uses A = P(1 + r/n)^(nt), where P is the principal, r the annual rate, n the times it compounds per year and t the years. The compound interest calculator does it for you and charts the growth.

Health & fitness

How do I calculate BMI?
BMI is your weight in kilograms divided by your height in metres squared (kg ÷ m²). The BMI calculator does the math in metric or imperial units and tells you the category.
How many calories should I eat per day?
Your daily calorie need equals your TDEE — the calories you burn to maintain your current weight. The calorie calculator estimates it and adjusts for losing, maintaining or gaining.

Grades & education

How do I calculate my GPA?
Multiply each course grade by its credit hours to get grade points, add them up and divide by the total credits. The GPA calculator does this weighted average for you.

Dates & time

How do I calculate my age?
Subtract your birth date from today’s date to get your age in years, months and days. The age calculator handles leap years and month lengths automatically.
How do I calculate days between two dates?
Count the number of calendar days from the earlier date to the later one. The date difference calculator returns the exact number of days, weeks and months between two dates.

Shopping & tips

How do I calculate discounts?
Multiply the price by the discount percentage and subtract it from the original price — 25% off $80 saves $20, leaving $60. The discount calculator shows the sale price and how much you save.
How much should I tip?
In the US, 15–20% of the pre-tax bill is customary for good table service, with 18% a common default. The tip calculator works out the tip and the split per person.