Unit Converter
Convert between metric and imperial units across 5 categories: length, weight, temperature, speed, and area. Type a value and get the result instantly.
Result
3.2808399
Feet (ft)
1 Metres (m) = 3.2808399 Feet (ft)
Frequently Asked Questions
Which unit categories are supported?
Length (mm, cm, m, km, in, ft, yd, mi), Weight (mg, g, kg, oz, lb), Temperature (°C, °F, K), Speed (m/s, km/h, mph, knots), and Area (cm², m², km², in², ft², acres, hectares).
How accurate is the conversion?
Conversions use standard exact or high-precision factors and are accurate to at least 10 significant digits. Results are displayed rounded to 6 significant figures for readability.
How does temperature conversion work?
Temperature uses formulas rather than simple multiplication. Celsius to Fahrenheit: (°C × 9/5) + 32. Celsius to Kelvin: °C + 273.15.
Can I swap the from and to units?
Yes. Click the swap button (⇄) to reverse the conversion direction instantly.
Metric vs Imperial: Quick Reference
| Category | Metric (SI) | Imperial (US) | Key conversion |
|---|---|---|---|
| Length | metre (m) | foot / inch | 1 m = 3.28084 ft |
| Weight | kilogram (kg) | pound (lb) | 1 kg = 2.20462 lb |
| Temperature | Celsius (°C) | Fahrenheit (°F) | °F = °C × 9/5 + 32 |
| Speed | km/h | mph | 1 km/h = 0.62137 mph |
| Area | m² | sq ft | 1 m² = 10.7639 sq ft |
Temperature Conversion Formulas
// Celsius ↔ Fahrenheit °F = (°C × 9/5) + 32 °C = (°F − 32) × 5/9 // Celsius ↔ Kelvin (absolute zero = 0 K = −273.15°C) K = °C + 273.15 °C = K − 273.15 // Common reference points 0°C = 32°F = 273.15 K (water freezes) 100°C = 212°F = 373.15 K (water boils) 37°C = 98.6°F (body temperature)