Conversion

Conversion calculators

Length, weight, temperature, energy, currency — converted against NIST-grade reference factors.

10 calculators·Updated daily·All formulas visible

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Most searchedLive ECB reference rates, mid-market.

Currency Converter

Convert between 31 world currencies at daily ECB reference rates — mid-market, with no retail spread — including the rate and its inverse.

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Common pairings

Cooking

VolumeWeightTemperature

Travel

CurrencyLengthTime

Engineering

EnergyData storageSpeed

Showing all 10 conversion calculators

Length

1 calculators

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Length

Convert meters, feet, inches, kilometers, miles, yards, and more usi…

Weight

1 calculators

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Weight

Convert kilograms, pounds, ounces, grams, stones, and metric tons — …

Temperature

1 calculators

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Temperature

Convert between Celsius, Fahrenheit, and Kelvin with the exact formu…

Volume

1 calculators

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Volume

Convert liters, US gallons, cups, quarts, pints, fluid ounces, and t…

Area

1 calculators

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Area

Convert square meters, square feet, acres, hectares, and square mile…

Speed

1 calculators

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Speed

Convert mph, km/h, meters per second, knots, and Mach — road, runnin…

Energy

1 calculators

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Energy

Convert joules, calories, kilocalories (food Calories), watt-hours, …

Time

1 calculators

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Time

Convert seconds, minutes, hours, days, weeks, months, and years — us…

Currency

1 calculators

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Currency

Convert between 31 world currencies at daily ECB reference rates — m…

Data storage

1 calculators

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Data storage

Convert bytes, KB, MB, GB, and TB — and the binary units (KiB, MiB, …