Convert Units
What is a Unit Converter?
A unit converter is a tool that helps you convert measurements from one unit to another within the same category (e.g., length to length, weight to weight). It's essential for science, engineering, cooking, travel, and everyday calculations.
Common Conversion Formulas
Note: These are approximate values for quick reference.
Popular Conversions
| Category | Common Conversions | Conversion Factor |
|---|---|---|
| Length | cm ↔ inch, m ↔ feet, km ↔ mile | 1 inch = 2.54 cm |
| Weight | kg ↔ lb, g ↔ oz, ton ↔ kg | 1 lb = 0.4536 kg |
| Temperature | Celsius ↔ Fahrenheit ↔ Kelvin | °F = (°C × 9/5) + 32 |
| Volume | L ↔ gallon, ml ↔ fl oz, m³ ↔ L | 1 gallon = 3.7854 L |
| Area | m² ↔ ft², acre ↔ hectare, km² ↔ mile² | 1 acre = 4046.86 m² |
| Speed | km/h ↔ mph, m/s ↔ km/h, knot ↔ mph | 1 mph = 1.6093 km/h |
Metric vs Imperial System
- Metric System: Used by most countries worldwide. Based on powers of 10 (meters, grams, liters).
- Imperial System: Used primarily in the US. Includes feet, pounds, gallons, Fahrenheit.
- Conversion Tip: Remember key factors: 1 inch = 2.54 cm, 1 kg = 2.2 lb, 0°C = 32°F.
When converting temperatures, remember: Water freezes at 0°C (32°F) and boils at 100°C (212°F). Room temperature is about 20-22°C (68-72°F). Use these reference points for quick mental estimates!
Why Use This Converter?
Our unit converter supports 50+ units across 8 categories with instant, accurate results. Perfect for students, professionals, travelers, cooks, and anyone working with measurements. No signup required, completely free, and works on all devices.
Learn More About Unit Conversions
Master unit conversions with our comprehensive Unit Converter Guide — includes formulas, conversion tables, and tips! 📚
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