Calculators · 5 min read
How to Convert Units of Measurement — Complete Guide
From miles to kilometers, pounds to kilograms, and Celsius to Fahrenheit — here are the most common unit conversion formulas and reference tables.
Most Common Conversions
| From | To | Multiply by |
|---|---|---|
| Miles | Kilometers | × 1.60934 |
| Kilometers | Miles | × 0.62137 |
| Kilograms | Pounds | × 2.20462 |
| Pounds | Kilograms | × 0.45359 |
| Liters | Gallons (US) | × 0.26417 |
| Gallons (US) | Liters | × 3.78541 |
| Feet | Meters | × 0.3048 |
| Meters | Feet | × 3.28084 |
| Inches | Centimeters | × 2.54 |
Temperature Conversions
Temperature is special — it requires a formula, not a simple multiplication:
| Conversion | Formula | Example |
|---|---|---|
| °C → °F | (C × 9/5) + 32 | 100°C = 212°F |
| °F → °C | (F − 32) × 5/9 | 98.6°F = 37°C |
| °C → Kelvin | C + 273.15 | 0°C = 273.15 K |
Frequently Asked Questions
Multiply miles by 1.60934. Example: 10 miles = 16.09 km.
F = (C × 9/5) + 32. Example: 25°C = (25×1.8) + 32 = 45 + 32 = 77°F.
Multiply kg by 2.20462. Example: 80 kg = 176.37 lbs.
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