Fast answers, clean math
Metric conversion calculator
Convert length, weight, temperature, volume, area, and speed without waiting through popups or a slow page. Pick a unit, enter a number, and get the result with the formula.
Unit converter
Convert a measurement
Useful reference
Common metric conversions
| Conversion | Value | Use it for |
|---|---|---|
| 1 kilometer to miles | 0.621371 miles | Running, driving, travel distance |
| 1 meter to feet | 3.28084 feet | Room size, height, project estimates |
| 1 centimeter to inches | 0.393701 inches | Clothing, product dimensions, crafts |
| 1 kilogram to pounds | 2.20462 pounds | Body weight, luggage, shipping |
| 1 liter to US gallons | 0.264172 gallons | Fuel, recipes, liquid volume |
| 100 square meters to square feet | 1076.39 square feet | Apartments, flooring, real estate |
No black box
How are metric conversion formulas calculated?
Most metric conversion formulas use one base unit. Length conversions pass through meters, mass conversions pass through kilograms, and volume conversions pass through liters. Temperature is different because Fahrenheit and Celsius use different zero points.
For example, 5 kilometers to miles is calculated as 5 x 1000 meters, then divided by 1609.344 meters per mile. The answer is 3.10686 miles.
Plain answers
Metric conversion FAQ
What is the easiest way to do metric conversion?
Use a converter that starts from a trusted base unit and shows the formula. That keeps the answer fast while making the math easy to check.
Why do converted numbers sometimes look rounded?
Some conversions create long decimal values. This calculator rounds the displayed result to useful significant digits, while the formulas keep the exact conversion factors.
Can I convert imperial units too?
Yes. The calculator supports common imperial units including inches, feet, miles, ounces, pounds, gallons, and miles per hour.
Does this page send my measurements anywhere?
No. The conversion runs in your browser. If analytics or advertising tags are added later, the privacy section should be updated before launch.
Trust basics
Privacy note
This converter runs in your browser and does not require an account. Read the privacy policy before using the site with analytics, advertising, or other third-party tags enabled.