Free online calculators
Fast, accurate calculators for loans, investments, tax, maths, health and everyday questions. Type your numbers and see the answer instantly.
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Finance & Loan Calculators
Loan, investment, savings, tax, salary and retirement calculators for Indian users, including EMI, SIP, PPF, NPS and GST.
EMI CalculatorEnter loan amount, interest rate and tenure to get your monthly EMI, total interest and total payment instantly.SIP CalculatorFind the future value of your monthly mutual fund SIP, total amount invested and estimated returns for any period.FD CalculatorCalculate the maturity amount and interest earned on a fixed deposit with quarterly, monthly or yearly compounding.Compound Interest CalculatorSee how your money grows with yearly, half-yearly, quarterly or monthly compounding over any period.Simple Interest CalculatorEnter principal, rate and time to get the simple interest and total amount instantly.GST CalculatorAdd GST to a price or remove GST from a GST-inclusive amount, with CGST and SGST split.Gratuity CalculatorEnter last drawn salary (basic + DA) and years of service to get your gratuity amount under the Payment of Gratuity Act.Lumpsum CalculatorEnter a one-time investment, expected yearly return and period to see its future value and estimated gains.RD CalculatorEnter monthly deposit, interest rate and tenure to get the maturity amount and interest earned on a recurring deposit.PPF CalculatorEnter yearly deposit, interest rate and years to see your PPF maturity value and the interest earned over the term.SWP CalculatorSee how long a lump sum lasts and what balance remains when you withdraw a fixed amount every month.Loan Eligibility CalculatorEnter your monthly income, existing EMIs, rate and tenure to estimate the maximum loan a bank may offer.CAGR CalculatorEnter starting value, ending value and years to find the compound annual growth rate of an investment.Inflation CalculatorSee what an amount will cost in the future and how much today’s money will be worth after years of inflation.Profit Margin & Markup CalculatorEnter cost price and selling price to get profit, profit margin percentage and markup percentage.HRA Exemption CalculatorEnter basic salary, HRA received, rent paid and city type to find your exempt and taxable HRA.Loan Prepayment CalculatorSee how much interest and time you save by making a part payment on a home loan or other EMI loan.Step-Up SIP CalculatorSee how raising your SIP by a fixed percentage every year grows your final corpus compared with a flat SIP.Retirement Corpus CalculatorEstimate the corpus you need at retirement and the monthly SIP required, allowing for inflation.NPS CalculatorEstimate your NPS corpus at retirement, the lump sum you can withdraw and the monthly pension from the annuity.Break-Even CalculatorEnter fixed costs, selling price and variable cost per unit to find the units and revenue needed to break even.Bill Split & Tip CalculatorEnter the bill, tip percentage and number of people to see what each person pays.Fuel Cost CalculatorEnter distance, mileage and fuel price to get the fuel needed, the trip cost and the cost per kilometre.SIP Goal Calculator (Monthly SIP Needed)Find the monthly SIP or one-time lump sum you need to reach a target amount in a set number of years.EPF Calculator (Provident Fund Corpus)Estimate your Employees’ Provident Fund balance at retirement from salary, contributions, raises and the interest rate.Sukanya Samriddhi Yojana (SSY) CalculatorEstimate the SSY maturity amount from your yearly deposit, interest rate and the girl’s age at opening.Income Tax Calculator (New vs Old Regime)Compare tax under the new and old regimes, with the standard deduction, rebate and cess.NSC Calculator (National Savings Certificate)Find the maturity value of a National Savings Certificate after 5 years, with interest compounded yearly.SCSS Calculator (Senior Citizens Savings Scheme)Find the quarterly, monthly and yearly interest from a Senior Citizens Savings Scheme deposit.
Math & Percentage Calculators
Percentage, fraction, exponent, root, average, ratio, HCF and LCM, prime factor and standard deviation calculators.
Percentage CalculatorFind X% of any number instantly, with the formula and a worked example.Percentage Change CalculatorEnter the old and new value to get the percentage increase or decrease.What Percent CalculatorFree calculator to find what percent one number is of another, for example what percent 30 is of 200.Discount CalculatorEnter the original price and discount percentage to see the sale price and how much you save, with optional extra discount.Average CalculatorEnter a list of numbers to get the mean, median, sum, count, smallest and largest value instantly.HCF and LCM CalculatorEnter two or more whole numbers to find their highest common factor (GCD) and least common multiple.Quadratic Equation SolverEnter a, b and c to find the roots, the discriminant and whether the roots are real or complex.Ratio CalculatorEnter two numbers to simplify the ratio to its lowest terms and see the decimal value and each part’s share.Standard Deviation CalculatorEnter a list of numbers to get the standard deviation, variance, mean, sum and count, for a sample or population.Percentage Error CalculatorCompare a measured value with the true value to get the percent error, absolute error and direction.Fraction CalculatorAdd, subtract, multiply or divide two fractions and get the simplified answer, mixed number and decimal.Exponent CalculatorRaise any base to any power, including negative and fractional exponents, with scientific notation for big results.Square Root CalculatorFind square, cube and nth roots, see if a number is a perfect square and get the simplified radical form.Speed, Distance & Time CalculatorEnter any two of speed, distance and time to find the third, with time shown in hours and minutes.Prime Factorization CalculatorBreak any whole number into prime factors, check if it is prime and list its divisors.Ohm's Law CalculatorEnter any two of voltage, current and resistance to find the third, plus the power in watts.Pythagorean Theorem CalculatorEnter two sides of a right triangle to find the third, plus area, perimeter and both acute angles.Circle Calculator (Area, Circumference)Enter the radius, diameter, circumference or area and get all the others instantly.Triangle Area Calculator (Heron’s Formula)Enter the three sides to get the area with Heron’s formula, plus perimeter, type of triangle and height.Permutation and Combination Calculator (nPr, nCr)Enter n and r to get nPr, nCr, n factorial and n to the power r, with exact values for large numbers.Scientific Notation CalculatorConvert any number to scientific, engineering and E notation, or standard form, with your chosen significant figures.Log Calculator (Logarithm)Find the logarithm of a number to any base, plus natural log (ln), log base 10 and log base 2.Slope CalculatorEnter two points to get the slope, line equation, angle, distance and midpoint between them.Volume Calculator (Cube, Cylinder, Cone, Sphere)Find the volume and surface area of a cube, box, cylinder, cone or sphere from its dimensions.Area Calculator (Rectangle, Triangle, Circle, Trapezoid)Find the area of a rectangle, triangle, parallelogram, trapezoid or circle from its dimensions, with the formula shown.Z-Score CalculatorEnter a value, the mean and the standard deviation to get the z-score and the share of a normal distribution below and above it.Proportion CalculatorEnter three values of a : b = c : d to find the fourth, using cross multiplication.Probability CalculatorFind the chance that both, either or neither of two independent events happen, and of at least one success in repeated tries.Decimal to Fraction CalculatorConvert a decimal such as 0.375 to a simplified fraction and a mixed number, with a choice of maximum denominator.Arithmetic and Geometric Sequence CalculatorFind the nth term and the sum of the first n terms of an arithmetic or geometric sequence.Percent Difference CalculatorCompare two values with the symmetric percent difference, and see the percentage change from the first to the second.System of Equations Calculator (2 Variables)Solve two linear equations with two unknowns, and see when there is no or infinite solution.Factorial CalculatorFind n factorial exactly for any whole number up to 1,000, with the digit count and trailing zeros.Rounding CalculatorRound a number to decimal places, significant figures or the nearest multiple, with half-up, banker’s, up and down results.
Health Calculators
BMI, BMR, calorie, body fat, ideal weight, sleep, running pace, ovulation and pregnancy due date calculators.
BMI CalculatorEnter height in cm and weight in kg to get your Body Mass Index, weight category and healthy weight range.BMR & Daily Calorie CalculatorEnter sex, age, height, weight and activity to estimate basal metabolic rate and daily calories to maintain weight.Pregnancy Due Date CalculatorEnter the first day of your last period to estimate your due date, weeks of pregnancy and trimester.Body Fat Calculator (US Navy Method)Estimate body fat percentage from height, neck, waist and hip measurements using the US Navy method.Running Pace CalculatorEnter distance and finish time to get your pace per kilometre and per mile, plus speed in km/h and mph.Weight Loss & Calorie Deficit CalculatorEnter your weight, goal, timeframe and maintenance calories to see the daily calorie deficit you need.Ideal Weight CalculatorSee your ideal body weight by height and sex using four well-known formulas, in kg and lb.Sleep CalculatorFind the best time to go to bed or wake up based on 90-minute sleep cycles, so you wake between cycles.Calorie Calculator (Daily Calorie Needs)Estimate your daily calorie needs from age, sex, height, weight and activity with the Mifflin-St Jeor equation.Ovulation CalculatorEnter your last period and cycle length to estimate your ovulation day, fertile window and next period.Heart Rate Zone CalculatorEstimate your maximum heart rate from age and get five training zones, as a percentage of max or by heart rate reserve.One Rep Max Calculator (1RM)Estimate your 1RM from the weight and reps you lifted using the Epley, Brzycki and Lombardi formulas, with training percentages.Macro Calculator (Protein, Carbs, Fat)Turn a daily calorie target and a protein, carb and fat split into grams of each macronutrient, per day and per meal.Waist-to-Hip Ratio CalculatorEnter your waist and hip measurements to get your WHR and compare it with the WHO risk thresholds.Calories Burned CalculatorEstimate calories burned walking, running, cycling, swimming and more from your weight and time, using MET values.Protein Intake CalculatorEstimate daily protein in grams from your body weight and activity or goal, with grams per meal.Period Calculator (Next Period Date)Enter the first day of your last period and your cycle length to predict your next three periods.Lean Body Mass CalculatorEstimate lean mass and body fat from height and weight with the Boer, James and Hume formulas.Steps to Distance Calculator (Steps to Miles and km)Convert your step count to kilometres and miles using your height, or your own stride length.Child Height Predictor (Adult Height)Estimate your child’s adult height from the parents’ heights using the mid-parental formula.VO2 Max Calculator (Cooper and 1.5-Mile Test)Estimate your VO2 max from the Cooper 12-minute run distance or your 1.5-mile run time.
Education Calculators
GPA, CGPA, percentage, final grade, weighted grade and attendance calculators for students.
CGPA to Percentage CalculatorConvert your CGPA on a 10-point scale to percentage using the CBSE formula, CGPA × 9.5.Percentage to CGPA CalculatorConvert marks percentage to CGPA on a 10-point scale using the CBSE formula, percentage ÷ 9.5.Attendance CalculatorFind your attendance percentage and how many classes you can miss or must attend to reach 75% or any target.GPA CalculatorEnter your letter grades and credits to get your grade point average on the 4.0 scale, with total credits and quality points.Final Grade CalculatorEnter your current grade, the final exam weight and the grade you want to see the score you need on the final.Weighted Grade CalculatorEnter each score and its weight to get your overall course grade, even if the weights do not add to 100.
Date & Time Calculators
Age, days between dates, add days, day of the week and hours worked calculators.
Age CalculatorEnter your date of birth to get your exact age in years, months and days, plus total days and days to your next birthday.Days Between Dates CalculatorFind the number of days, weeks, months and years between any two dates instantly.Add or Subtract Days from a DateAdd or subtract days from any date to find the exact future or past date and its day of the week.Hours Calculator (Time Between Two Times)Enter a start time, an end time and a break to get the hours and minutes worked, plus decimal hours for payroll.Day of the Week CalculatorEnter any date to see the weekday, the day of the year, the ISO week number and whether it is a leap year.Business Days CalculatorCount the weekdays between two dates, excluding weekends and any holidays you enter.Week Number Calculator (ISO Week)Find the ISO week number, day of the week and day of the year for any date.Days Until Calculator (Countdown)Count the days, weeks and the weekday until your holiday, birthday, deadline or event.
Unit Converters
Length, weight, area, temperature, volume, speed, time, data storage and fuel economy converters, with Indian land units.
Length ConverterConvert between millimetres, centimetres, metres, kilometres, inches, feet, yards and miles instantly.Weight ConverterConvert between milligrams, grams, kilograms, quintals, tonnes, ounces, pounds and stones instantly.Area ConverterConvert square feet, square metres, gaj, cents, guntas, acres and hectares, the units used in Indian property.Temperature ConverterConvert between Celsius, Fahrenheit and Kelvin instantly, with the formulas and common reference points.Volume ConverterConvert between millilitres, litres, cubic metres, teaspoons, tablespoons, cups, pints, quarts and US or UK gallons.Speed ConverterConvert between kilometres per hour, miles per hour, metres per second, knots and feet per second instantly.Time ConverterConvert between milliseconds, seconds, minutes, hours, days, weeks, months and years instantly.Data Storage ConverterConvert between bits, bytes, KB, MB, GB, TB and the binary units KiB, MiB, GiB and TiB.Fuel Economy Converter (MPG, km/L, L/100km)Convert between miles per gallon (US and UK), kilometres per litre and litres per 100 km instantly.Pressure ConverterConvert between pascals, kilopascals, bar, psi, atmospheres, mmHg, inHg and torr instantly, with a reference table.Energy ConverterConvert between joules, kilojoules, calories, kilocalories, watt-hours, kilowatt-hours, BTU and foot-pounds.Power ConverterConvert between watts, kilowatts, megawatts, horsepower, metric horsepower and BTU per hour.Angle Converter (Degrees, Radians)Convert between degrees, radians, gradians, turns, arcminutes and arcseconds with a reference table.Number Base Converter (Binary, Decimal, Hex)Convert between binary, octal, decimal and hexadecimal, including very large whole numbers.Roman Numeral ConverterTurn a number from 1 to 3,999 into Roman numerals, or a Roman numeral into a number.
Money, Loan & Savings Calculators
Mortgage, loan, savings, 401(k), tax, VAT, tip and net worth calculators for dollars, pounds, euros and more.
Mortgage CalculatorEnter home price, down payment, rate and term to get your monthly payment, including property tax and insurance.Refinance CalculatorCompare your current loan with a new rate and term to see monthly savings and how long until closing costs pay off.Auto Loan CalculatorEnter car price, down payment, trade-in, tax, rate and term to get your monthly payment and total interest.Credit Card Payoff CalculatorSee how long it takes to clear a balance at your APR and monthly payment, and the interest you pay.Savings Goal CalculatorEnter your target, current savings, time and interest rate to see how much to save each month.APY CalculatorConvert an interest rate and compounding frequency to the annual percentage yield and see the interest on your deposit.Salary to Hourly & Hourly to Salary CalculatorConvert annual pay to hourly, weekly and monthly pay, or an hourly rate to yearly salary.Sales Tax CalculatorAdd sales tax to a price, or work out the pre-tax price and tax from a total that already includes tax.VAT CalculatorAdd VAT to a net price or remove VAT from a gross price, with the VAT amount shown at any rate.Debt-to-Income Ratio CalculatorEnter your housing cost, other monthly debts and gross income to see your DTI ratio and what lenders may think.401(k) CalculatorEstimate your balance at retirement from salary, contribution, employer match, raises and investment return.Tip CalculatorEnter the bill, tip percentage and number of people to get the tip, the total and what each person pays.Loan CalculatorEnter the amount, interest rate and term to get the monthly payment, total interest and total cost of a personal loan.Loan Payoff Calculator (Extra Payments)See how much interest and time you save by adding an extra monthly payment to any fixed-rate loan.Investment CalculatorEnter your starting amount, monthly contribution, return and years to see the future value of your investment.ROI CalculatorEnter the amount invested, the final value and the time held to get ROI, net gain and annualised return.Rule of 72 CalculatorSee how many years it takes to double your money at any return, with the exact figure for comparison.Rent Affordability CalculatorFind the rent you can afford from your income using the 30% rule and your other monthly debts.Net Worth CalculatorAdd up your cash, investments, property and other assets, subtract what you owe, and see your net worth.Unit Price CalculatorCompare two products by price per unit to see which is cheaper and how much you save per unit.Markup CalculatorFind the selling price from cost and markup percentage, or the markup from cost and price, with profit and margin.Commission CalculatorWork out sales commission with an optional quota and higher rate above it, plus base pay and total earnings.Overtime Pay CalculatorEnter hourly rate, regular hours, overtime hours and multiplier to get overtime rate and total pay.Dividend Yield CalculatorEnter share price, annual dividend per share and number of shares to get yield and expected income.Present Value CalculatorDiscount a future amount back to today using a rate and number of years, with annual or more frequent compounding.Average Cost Calculator (Stock Average Down)Enter up to three purchases of a stock and get your average price per share, total invested and profit or loss.Annuity Calculator (Present and Future Value)Find the future value and present value of regular payments at a given rate, for ordinary annuities or annuities due.FIRE Calculator (Financial Independence)Find your financial independence number from annual spending and a withdrawal rate, and how many years it takes to reach it.Effective Annual Rate (EAR) CalculatorConvert a nominal interest rate and compounding frequency into the true yearly rate (EAR/APY).Loan-to-Value (LTV) CalculatorFind your LTV ratio, equity and down payment, and the loan and deposit needed to reach a target LTV.Payback Period CalculatorFind how long an investment takes to earn back its cost, with and without discounting.NPV Calculator (Net Present Value)Enter an investment, up to five years of cash flows and a discount rate to get net present value and profitability index.IRR Calculator (Internal Rate of Return)Enter an initial investment and up to five years of cash flows to find the internal rate of return.Loan Comparison CalculatorCompare two loans by monthly payment, total interest and total cost including fees.Interest Rate Calculator (Find the Rate on a Loan)Find the interest rate on a loan from the amount, monthly payment and term.
Everyday Calculators
Pet age, electricity cost, paint, tile, concrete and download time calculators for home and daily life.
Pet Age Calculator (Dog and Cat Years)Convert your dog’s or cat’s age into human years, using the newer dog formula and the traditional rule.Appliance Electricity Cost CalculatorWork out the units and cost of running any appliance from its watts, hours of use and your tariff.Paint Calculator (Litres Needed for a Room)Estimate the litres of paint for a room from its size, doors, windows, coats and the paint’s coverage.Tile Calculator (Tiles and Boxes Needed)Work out how many tiles and boxes you need for a floor or wall, with an allowance for cuts and waste.Concrete Calculator (Slab Volume)Find the volume of concrete for a slab or path in cubic metres and cubic yards, with an allowance for waste.Download Time CalculatorFind how long a file takes to download or upload from its size and your internet speed.