Convert between metric and imperial units instantly — length, weight, temperature, volume, and speed, all in one free tool. No signup, no ads blocking the calculator, and nothing you enter leaves your browser.
Popular Conversions
- 1 inch = 2.54 cm — one of the most searched length conversions.
- 1 kg = 2.20462 lb — commonly used for body weight and shipping.
- 0°C = 32°F — the freezing point of water in both scales.
- 1 mile = 1.60934 km — the standard used for distance and speed limits.
- 1 gallon (US) = 3.78541 liters — frequently used for fuel and liquid volume.
Why Use Our Unit Converter?
- Five categories in one tool. Length, weight, temperature, volume, and speed — no need to bounce between different converter sites.
- Instant results. Conversions update live as you type, with no button to click.
- Accurate, standard conversion factors. Based on internationally recognized measurement standards.
- Works offline once loaded. Since everything runs in your browser, no internet connection is needed after the page loads.
Frequently Asked Questions
How do I convert cm to inches?
Divide the centimeter value by 2.54 to get inches. Our tool does this instantly — just select Length, choose cm as your “From” unit and in as your “To” unit.
How do I convert kg to lbs?
Multiply the kilogram value by 2.20462 to get pounds. Select Weight, then choose kg and lb in the converter above for an instant result.
How do I convert Celsius to Fahrenheit?
Multiply the Celsius value by 9/5 and add 32. Select the Temperature category above to convert instantly between Celsius, Fahrenheit, and Kelvin.
Is this unit converter free to use?
Yes, completely free with no signup required, and it works on any device.
Does this tool work for cooking measurements?
Yes, the Volume category supports common cooking conversions like cups, milliliters, and fluid ounces.
