Unit Converter
Instantly convert between common length and weight units. Accurate, free, and works entirely in your browser.
Length
3.2808399
Weight
2.2046226
About this tool
Unit conversion is one of those tasks that seems trivial until you actually need it — converting a recipe from cups to grams, a height from feet to centimeters, a temperature from Fahrenheit to Celsius, or a fuel economy figure between mpg and L/100km. Our Unit Converter handles length, weight, temperature, volume, area, speed, time, and data storage with precise, real-time conversion.
Every calculation happens locally in your browser using rigorously checked conversion factors — no server round-trip, no ads in the result, no signup. Type a value in one unit and the equivalent appears instantly in the others.
We chose the most commonly needed unit pairs for each category, including both metric and imperial systems, so you can convert between US and international measurements without doing the math by hand.
Why use it
- Instant, real-time conversion as you type.
- Covers length, weight, temperature, volume, area, speed, time, and data.
- Both metric and imperial systems supported.
- Works offline once loaded — fully local.
How to use it
- 1Pick a category
Choose what you're converting — length, weight, temperature, volume, area, speed, time, or data.
- 2Enter your value
Type the number in your source unit. Conversions to every other unit update instantly.
- 3Copy the result
Use the result directly or copy/paste it where you need it.
Common use cases
- Cooking with international recipes (cups ↔ grams, °F ↔ °C).
- Reading product specs in unfamiliar units (inches ↔ cm, lbs ↔ kg).
- Travel planning (miles ↔ km, mpg ↔ L/100km).
- Fitness and health tracking (lbs ↔ kg, miles ↔ km).
- DIY and home projects (inches ↔ mm, sq ft ↔ sq m).
- Tech and storage (MB ↔ GB ↔ TB, Mbps ↔ MB/s).
Tips for best results
Watch for temperature offsets
Unlike length or weight, temperature conversions involve both a scale and an offset — 0 °C is 32 °F, not 0 °F.
Bytes vs bits
Network speeds (Mbps) are in megabits; storage (MB) is in megabytes. 8 bits = 1 byte — they're not interchangeable.
US vs UK gallons
A US gallon is ~3.785 L; a UK (imperial) gallon is ~4.546 L. Always check which you need.