📏 Convert Any Unit Instantly
Switching between US customary units and the metric system can be confusing. This converter handles the most common conversions with instant, accurate results.
🎯 What You Can Convert
📏 Length
Inches, feet, yards, miles, mm, cm, m, km
⚖️ Weight
Ounces, pounds, tons, grams, kg
🌡️ Temperature
Fahrenheit, Celsius, Kelvin
🥤 Volume
Cups, pints, quarts, gallons, mL, L
🇺🇸 US vs Metric Cheat Sheet
| 1 inch | = 2.54 cm |
| 1 foot | = 0.3048 m |
| 1 mile | = 1.609 km |
| 1 pound | = 0.4536 kg |
| 1 gallon | = 3.785 L |
| °F to °C | (°F − 32) × 5/9 |
💡 Common Use Cases
- 🏃 Running — Miles vs kilometers for races
- 🍳 Cooking — Cups vs milliliters for recipes
- ✈️ Travel — Understanding weather (°C vs °F)
- 💪 Fitness — Pounds vs kilograms for weights
- 📐 DIY projects — Inches vs centimeters for materials
🌡️ Temperature Formula
Temperature is different from other units — it uses offsets, not just multiplication. 0°C = 32°F (freezing) and 100°C = 212°F (boiling). This calculator handles it correctly.