Luminus

Converters tools

Convert between units across everything from length, weight, and temperature to area, volume, speed, pressure, energy, and data size. There are practical converters too — cooking measures, fuel economy, and shoe and clothing sizes — plus live currency conversion. All unit math runs in your browser; only currency fetches current rates from a free API.

15 free tools · no sign-up

Time Unit Converter

Seconds, minutes, hours, days, weeks, months, and years.

Converters

Length Converter

Metres, feet, inches, miles, and more — converted instantly.

Converters

Weight Converter

Kilograms, pounds, ounces, stones, and tonnes.

Converters

Temperature Converter

Celsius, Fahrenheit, and Kelvin with the formula shown.

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Area Converter

Square metres, feet, acres, hectares, and miles.

Converters

Volume Converter

Litres, gallons, cups, pints, and cubic metres.

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Speed Converter

km/h, mph, m/s, knots, and feet per second.

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Pressure Converter

Pascals, bar, psi, atmospheres, and mmHg.

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Energy Converter

Joules, calories, kWh, BTU, and more.

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Data Size Converter

Bytes, KB, MB, GB, and their binary KiB/MiB/GiB siblings.

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Cooking Converter

Cups, tablespoons, teaspoons, millilitres, and fluid ounces.

Converters

Fuel Economy Converter

MPG (US & UK), L/100km, and km/L, handled reciprocally.

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Shoe Size Converter

Convert shoe sizes between US, UK, EU, and CM for men, women, and kids.

Converters

Clothing Size Converter

Convert clothing sizes across US, UK, EU, IT and alpha (XS–XXL) for women and men.

Converters

Currency Converter

Convert between 28 world currencies with live, daily-updated exchange rates.

Live data

Why use these converters tools?

  • Wide coverage in one place: scientific units like pressure and energy alongside everyday ones like cups, miles per gallon, and dress sizes.
  • Bidirectional and instant — type into either side and the conversion updates immediately, with sensible precision.
  • Currency uses up-to-date exchange rates, while every other converter works fully offline in your browser.

Frequently asked questions

Other categories

FinanceHealthSEO & MarketingDeveloperTextGeneratorsMathDates & TimePDFImageWeatherAI Tools
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