Unit Converter — Convert Between Metric and Imperial Units Instantly
Switching between metric and imperial measurements is a frequent need in our globally connected world. Whether you are following a recipe from the United States while living in Europe, reading a product specification in a foreign unit system, planning a road trip across countries with different conventions, or buying clothing with unfamiliar sizing, our Unit Converter handles the most common everyday conversions in an instant.
Supported conversions include: **Length** — centimetres to inches, metres to feet, and kilometres to miles (all bidirectional). **Weight** — kilograms to pounds (bidirectional).
All conversions are bidirectional: enter a value in either field and the converted equivalent updates automatically. You never have to decide which "direction" you are converting — just type where it makes sense to you.
Results are calculated to four decimal places using internationally standardized conversion factors: 1 inch = 2.54 cm exactly, 1 kilogram = 2.20462 pounds, 1 metre = 3.28084 feet, 1 kilometre = 0.621371 miles.
Unlike standalone apps that require a download or sign-in, this converter is always available in your browser with zero friction. No installation, no account, no ads-blocking downloads. Just enter a number and get your answer.
How to use the Unit Converter
- Select the unit category you need (length or weight).
- Select the specific unit pair (e.g., cm ↔ inches).
- Enter your value in either the left or right field.
- The converted value updates instantly in the other field.