Region
Currency and unit preferences are stored only on this device.
Regional settings use the browser Intl APIs to format numbers and currencies locally. Currency and crypto data are fetched only when you request a calculation.
Universal calculators for money, units, time and everyday life
Calculate percentages, taxes, currencies, crypto, units, time zones, energy and more with country, currency and unit preferences.
PWA · offlineWCAG-friendly
Regional settings use the browser Intl APIs to format numbers and currencies locally. Currency and crypto data are fetched only when you request a calculation.
Global tools
∑MathPercentage calculatorCalculate a percentage of any amount quickly.∑MathRule of threeSolve proportions: if A corresponds to B, find the value corresponding to C.%BusinessDiscount calculatorCalculate the final price and savings after a discount.%BusinessTax calculator: VAT, GST or Sales TaxAdd or remove a configurable percentage tax for any country.💱Digital financeCompound interestEstimate how capital grows with an annual rate and periodic compounding.💱Digital financeLIVECurrency converterConvert currencies using daily exchange-rate data fetched on demand.💱Digital financeLIVECrypto converterConvert BTC, ETH, SOL and USDT to fiat currencies using live market prices when available.↔UnitsKilometers ↔ milesConvert distance between kilometers and miles.↔UnitsKilograms ↔ poundsConvert mass or weight between kilograms and pounds.↔UnitsCelsius ↔ FahrenheitConvert temperatures between °C, °F and K.↔UnitsLiters ↔ gallonsConvert volume between liters and US gallons.🌐Remote workTime zone differenceCompare the current time and offset between two time zones.⚡Energy & sustainabilityElectricity costEstimate kWh and operating cost for an appliance or computer.🚗Travel & transportFuel costEstimate fuel needed and trip cost in metric or imperial units.🚗Travel & transportTravel timeEstimate trip duration from distance and average speed.%BusinessPayment fee calculatorCalculate a percentage fee plus a fixed fee for Stripe, PayPal, Wise or another provider.🌐Remote workNet salary estimateEstimate net pay using a deduction percentage you provide, without assuming a country's tax law.🌐Remote workLIVECost of living comparisonCompare your own monthly expenses in two places by converting them to one currency.⚡Energy & sustainabilityTravel carbon footprintEstimate trip emissions from distance and an editable kg CO₂e per km factor.
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Live data when available
Frankfurter · CoinGecko
External APIs are requested on demand to reduce data usage on slow networks.