All calculators
Every calculator on CalculatorHandy, grouped by category. Use the search box to jump straight to one.
Financial Calculators
- Loan CalculatorMonthly payment, total interest and a yearly amortisation schedule for any loan.
- EMI CalculatorEquated monthly instalment for home, car or personal loans, with full breakup.
- Mortgage CalculatorMonthly home payment with taxes, insurance and fees, plus total interest.
- Compound Interest CalculatorGrowth of savings with any compounding frequency and optional monthly additions.
- Simple Interest CalculatorInterest and total amount using I = P × R × T, in years, months or days.
- Savings CalculatorHow regular deposits grow, and how long it takes to reach a savings goal.
- Investment Return CalculatorTotal ROI and annualised return from what you invested and what you got back.
- SIP CalculatorMaturity value of a monthly systematic investment plan, with optional annual step-up.
- CAGR CalculatorCompound annual growth rate between a starting and ending value.
- Inflation CalculatorFuture cost of today’s prices, or what money will be worth after inflation.
- Discount CalculatorSale price and savings, including stacked discounts like 20% + 10%.
- Sales Tax CalculatorAdd sales tax to a price, or extract the tax from a tax-inclusive total.
- GST CalculatorAdd or remove GST at any slab, with the CGST + SGST or IGST split.
- Tip CalculatorTip amount, total and each person’s share when splitting the bill.
- Salary CalculatorConvert pay between hourly, daily, weekly, monthly and yearly, with estimated take-home.
- Hourly to Annual Salary CalculatorTurn an hourly wage into yearly, monthly and weekly income, with overtime.
- Profit Margin CalculatorGross profit, margin and markup from cost and selling price.
- Markup CalculatorSelling price from cost and markup, plus the resulting margin.
- Break-Even CalculatorUnits and revenue needed to cover fixed costs, plus units for a target profit.
- Currency ConverterConvert between 29 major currencies using clearly labelled reference rates.
Math Calculators
- Basic CalculatorAdd, subtract, multiply and divide with a clear on-screen keypad.
- Scientific CalculatorTrigonometry, logarithms, powers, roots and factorials in degrees or radians.
- Percentage CalculatorFind X% of a number, what percent one number is of another, or the whole from a part.
- Percentage Increase/Decrease CalculatorPercentage change between two values, or a value raised or lowered by a percent.
- Fraction CalculatorAdd, subtract, multiply and divide fractions and mixed numbers, simplified.
- Average CalculatorThe arithmetic mean of any list of numbers, with sum and count.
- Ratio CalculatorSolve A : B = C : D for the missing value, for scaling recipes, maps and mixes.
- Ratio SimplifierReduce a ratio such as 24:36 or 1.5:2.5:4 to its simplest whole-number form.
- Exponent CalculatorRaise any number to any power, including negative and fractional exponents.
- Square Root CalculatorSquare roots, cube roots and any nth root, with simplified radical form.
- Prime Number CheckerCheck whether a number is prime and see its prime factorisation.
- GCD and LCM CalculatorGreatest common divisor and least common multiple of two or more numbers.
- Rounding CalculatorRound to decimal places, significant figures or the nearest 10, 100 or 0.05.
- Random Number GeneratorPick random whole numbers or decimals in any range, with or without repeats.
- Standard Deviation CalculatorPopulation or sample standard deviation and variance, with a deviation table.
- Mean, Median and Mode CalculatorMean, median, mode, range, minimum and maximum from one list.
- Unit ConverterTwelve kinds of measurement in one converter: length, weight, temperature and more.
- Age CalculatorExact age in years, months and days, plus total days and your next birthday.
- Date Difference CalculatorYears, months and days between two dates, plus totals in weeks and days.
- Days Between Dates CalculatorCount the days between two dates, with weekdays and weekends split out.
- Time Duration CalculatorAdd and subtract durations in hours, minutes and seconds.
Health & Fitness Calculators
- BMI CalculatorBody mass index with the WHO category and a healthy weight range for your height.
- BMR CalculatorBasal metabolic rate with the Mifflin–St Jeor and Harris–Benedict equations.
- TDEE CalculatorTotal daily energy expenditure for your activity level, with every level compared.
- Daily Calorie CalculatorCalories per day to maintain, lose or gain weight at a steady pace.
- Ideal Weight EstimatorIdeal body weight by four classic formulas plus the healthy BMI range.
- Body Fat EstimatorBody fat percentage from tape measurements using the US Navy method.
- Water Intake EstimatorA daily water target from body weight, exercise and climate.
- Pace CalculatorRunning or walking pace, finish time or distance, with splits and race times.
- Running Speed CalculatorConvert between pace and speed: min/km, min/mile, km/h, mph and m/s.
- Pregnancy Due Date CalculatorEstimated due date, current week and trimester from LMP, conception or IVF date.
Education Calculators
- GPA CalculatorSemester and cumulative GPA on the 4.0 scale from letter grades and credits.
- CGPA CalculatorCumulative GPA on the 10-point scale from semester SGPAs, with percentage conversion.
- Grade CalculatorYour current course grade from weighted assignments, quizzes and exams.
- Final Exam Grade CalculatorThe score you need on the final exam to reach your target grade.
- Marks Percentage CalculatorOverall percentage from subject marks, with each subject’s percentage.
- Weighted Average CalculatorAn average where each value counts according to its weight.
- Student Attendance CalculatorAttendance percentage, how many classes you can miss, or how many you must attend.
- Required Attendance CalculatorHow many of the remaining classes in a term you must attend to meet a target.
- Age at School Admission CalculatorA child’s age on the admission cut-off date and whether they meet the minimum age.
Conversion Calculators
- Length ConverterMetres, feet, inches, kilometres, miles and more.
- Weight ConverterKilograms, pounds, ounces, grams, stones and tonnes.
- Temperature ConverterCelsius, Fahrenheit, Kelvin and Rankine.
- Area ConverterSquare feet, square metres, acres, hectares and more.
- Volume ConverterLitres, millilitres, gallons, cups, cubic metres and more.
- Speed Converterkm/h, mph, m/s, knots and Mach.
- Time ConverterSeconds, minutes, hours, days, weeks, months and years.
- Data Storage ConverterBits, bytes, KB, MB, GB, TB and binary GiB, TiB.
- Fuel Economy Converterkm/L, L/100 km, US mpg and UK mpg.
- Pressure ConverterPa, kPa, bar, psi, atm, mmHg and more.
- Power ConverterWatts, kilowatts, horsepower, BTU/h and AC tons.
- Energy ConverterJoules, calories, kWh, BTU and more.
- Unit ConverterTwelve kinds of measurement in one converter: length, weight, temperature and more.
- Cooking Measurement ConverterCups, spoons, grams and ounces for common ingredients.
Date & Time Calculators
- Age CalculatorExact age in years, months and days, plus total days and your next birthday.
- Date Difference CalculatorYears, months and days between two dates, plus totals in weeks and days.
- Days Between Dates CalculatorCount the days between two dates, with weekdays and weekends split out.
- Birthday CountdownDays until your next birthday and the age you will turn.
- Days Until DateHow many days, weeks and working days remain until any date.
- Business Days CalculatorCount working days between two dates, excluding weekends and holidays.
- Working Days CalculatorThe date that falls a number of working days after or before a start date.
- Time Zone CalculatorConvert a date and time between world time zones, with daylight saving handled.
- Add or Subtract DaysThe date a given number of days before or after another date.
- Date Add/Subtract CalculatorAdd or subtract years, months, weeks and days from a date.
- Hours CalculatorHours worked between two times, minus breaks, with optional pay.
- Time Duration CalculatorAdd and subtract durations in hours, minutes and seconds.
Everyday Calculators
- Cooking Measurement ConverterCups, spoons, grams and ounces for common ingredients.
- Electricity Bill EstimatorEstimate a power bill from units used, with flat or slab tariffs, fixed charges and tax.
- Water Bill EstimatorEstimate a water bill from usage, rate, fixed charges and sewer surcharge.
- Paint CalculatorHow much paint you need for a room’s walls and ceiling, after doors and windows.
- Concrete CalculatorConcrete volume for slabs and columns, premix bags, and site-mix materials.
- Flooring CalculatorFloor area across rooms, boxes of flooring needed, and the cost.
- Tile CalculatorNumber of tiles and boxes for a floor or wall, with grout gaps and waste.
- Fuel Cost CalculatorFuel needed and cost of a trip from distance, mileage and fuel price.
- Travel Cost CalculatorTotal road-trip budget with fuel, tolls, stays and food, split per person.
- Percentage Off CalculatorWhat percent off a sale really is, or the original price before a discount.
E-commerce Calculators
- Discount CalculatorSale price and savings, including stacked discounts like 20% + 10%.
- GST CalculatorAdd or remove GST at any slab, with the CGST + SGST or IGST split.
- Profit Margin CalculatorGross profit, margin and markup from cost and selling price.
- Markup CalculatorSelling price from cost and markup, plus the resulting margin.
- Break-Even CalculatorUnits and revenue needed to cover fixed costs, plus units for a target profit.
- E-commerce Profit CalculatorProfit per order after product cost, platform and payment fees, shipping and ads.
- Product Pricing CalculatorThe selling price that covers your costs and fees and hits a target margin.
- Amazon Seller Fee CalculatorAmazon referral, per-item and closing fees, net proceeds and profit per sale.
- Etsy Seller Fee CalculatorEtsy listing, transaction, payment processing and Offsite Ads fees, and your profit.
- Shopify Profit CalculatorProfit per Shopify order after payment fees, plan costs, shipping and ads.
- Dropshipping Profit CalculatorProfit per dropshipped order after supplier, shipping, fees, ads and refunds.
- ROAS CalculatorReturn on ad spend, profit after ads and your break-even ROAS.
- Advertising Cost CalculatorAd cost, clicks, conversions and cost per sale from CPM or CPC pricing.
- Customer Acquisition Cost CalculatorCost to win each new customer, with lifetime value and payback.
- ROI CalculatorReturn on investment for a campaign, stock purchase or project.
- Shipping Cost CalculatorDimensional weight, billable weight and parcel shipping cost from your rates.
- VAT CalculatorAdd VAT to a net price or extract VAT from a gross price at any rate.
- Inventory Turnover CalculatorHow many times stock sells through in a period, and days of inventory.
- Average Order Value CalculatorAverage order value, units per order and average selling price.
- Conversion Rate CalculatorConversion rate, revenue per visitor and conversions needed for a target rate.
- Payment Processing Fee CalculatorCard processing fees on a payment, or the amount to charge to receive a set sum.
- PayPal Fee CalculatorPayPal fees on a payment, what you receive, and how much to charge to receive a set amount.
- Wholesale Pricing CalculatorWholesale price and suggested retail price from cost and markups.
eBay Calculators
- eBay Fee CalculatorEstimate the final value fee, per-order fee and other eBay fees on a sale.
- eBay Profit CalculatorProfit and margin on an eBay sale after fees, item cost and postage.
- eBay Final Value Fee CalculatorWork out eBay’s final value fee, including the tiered rate and per-order fee.
- eBay Shipping CalculatorCompare charging for shipping with offering free shipping on eBay.
- eBay International Selling CalculatorProfit on an international eBay sale with the international fee and currency costs.
- eBay Promoted Listings CalculatorAd fee and profit with eBay Promoted Listings, and your break-even ad rate.
- eBay Break-Even CalculatorThe lowest eBay price that covers fees and costs, or hits a target profit.
- eBay Reseller CalculatorThe most you should pay for an item to resell on eBay at your target profit.
- eBay VAT and Sales Tax CalculatorHow US sales tax affects eBay fees, or VAT and profit on a VAT-inclusive price.
- eBay ROI CalculatorReturn on investment for an eBay flip or a batch of items.
- eBay Best Offer CalculatorYour lowest acceptable Best Offer, and the profit on any offer you receive.
- eBay Payout CalculatorHow much eBay will pay out to your bank after fees and label costs.