What is the difference between a nautical mile and a regular mile?

A nautical mile is exactly 1,852 metres, while a statute (regular) mile is 1,609.344 metres. Nautical miles are used in aviation and maritime navigation and are based on the circumference of the Earth.

Free Online Unit Converter

Convert between units of length, weight, temperature, area, volume, speed and time instantly.

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Unit Converter — All Categories in One Place

EazyStudio's unit converter covers seven categories with dozens of units in each. All conversions happen instantly in your browser — no page reload, no server round-trip, and no sign-up required.

Length — Metric to Imperial and Back

Convert between metres, kilometres, miles, feet, inches, yards, nautical miles, centimetres and millimetres. Useful for travel, construction, engineering and everyday use.

Temperature — Celsius, Fahrenheit, Kelvin

Temperature conversion uses formulas rather than simple multiplication factors: °F = (°C × 9/5) + 32 for Celsius to Fahrenheit, and K = °C + 273.15 for Celsius to Kelvin.

Weight & Mass

Convert kilograms, grams, pounds, ounces, tonnes, stone and more. Commonly needed for cooking, fitness tracking, shipping and scientific work.

Frequently Asked Questions

How do I convert Celsius to Fahrenheit?

Select the Temperature tab, choose Celsius as the From unit and Fahrenheit as the To unit, then enter your value. The formula is °F = (°C × 9/5) + 32. For example, 100°C equals 212°F and 0°C equals 32°F.

How many kilograms are in a pound?

1 pound equals 0.453592 kilograms. Conversely, 1 kilogram equals approximately 2.20462 pounds. Use the Weight tab to convert any amount instantly.

How many millilitres are in a cup?

One US cup equals 236.588 millilitres. One metric cup (used in Australia and Canada) equals 250 millilitres. Use the Volume tab to convert between cups, litres, fluid ounces, gallons and more.

Are all conversions exact?

Most conversions use the exact SI-defined conversion factors (for example 1 inch = 25.4 mm exactly). Temperature conversions use the exact formulas. Results are displayed to up to 10 significant figures.