Convert any everyday measurement. This free unit converter handles length, weight, volume, temperature, area and speed, showing every related unit at once from a single value.
Convert
Pick a category, enter a value and choose its unit. Every other unit in that category updates instantly. Temperature uses its own scale conversions.
Converted to
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Enter a value
Conversions go through a base unit for each category (metres, grams, litres, square metres, metres per second) for consistency. Temperature converts directly between Celsius, Fahrenheit and Kelvin.
Use this free unit converter to convert length, weight, volume, temperature, area and speed. Enter a value, pick the unit, and every other unit updates instantly.
What this unit converter does
A unit converter changes a measurement from one unit to another. This one covers six everyday categories — length, weight, volume, temperature, area and speed — and shows all related units at once.
Categories and common units
Category
Units included
Length
m, km, cm, mm, mi, yd, ft, in, nmi
Weight
g, kg, mg, t, lb, oz, st
Volume
L, mL, m³, gal, qt, pt, cup, fl oz, tbsp, tsp
Temperature
°C, °F, K
Area
m², km², ft², yd², mi², acre, hectare
Speed
m/s, km/h, mph, ft/s, knots
Quick conversion examples
10 miles is about 16.09 km; 70 kg is about 154.32 lb; 1 US gallon is 3.785 L; 25 °C is 77 °F; and 100 km/h is about 62.14 mph.
How conversions work
Each category uses a base unit (metres, grams, litres, square metres, metres per second). The value is converted to the base, then to every other unit — which keeps results consistent. Temperature converts directly between its three scales.
How to use the unit converter
Choose a category.
Enter a value and its unit.
Read all the converted units instantly.
Unit Converter FAQ
What can this unit converter convert?
Length, weight, volume, temperature, area and speed — covering common metric and imperial units in each category.
How do I convert metric to imperial?
Pick the category, enter a metric value (like 10 km) and the converter shows the imperial equivalents (about 6.21 miles) alongside every other unit.
Does it convert temperature?
Yes. Choose the temperature category to convert between Celsius, Fahrenheit and Kelvin directly.
How accurate are the conversions?
They use standard conversion factors, so results are precise for everyday use. Very specialised units may have field-specific definitions.
Can I see all units at once?
Yes. Enter one value and the converter displays the result in every unit within that category.
Is the unit converter free?
Yes, this unit converter is completely free, needs no sign-up, and gives instant results in your browser.
