Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin temperature scales instantly.
Common Temperatures
| Celsius (°C) | Fahrenheit (°F) |
|---|---|
| -40 °C | -40 °F |
| -20 °C | -4 °F |
| 0 °C | 32 °F |
| 10 °C | 50 °F |
| 20 °C | 68 °F |
| 25 °C | 77 °F |
| 30 °C | 86 °F |
| 37 °C | 98.6 °F |
| 100 °C | 212 °F |
| Celsius (°C) | Kelvin (K) |
|---|---|
| -273.15 °C | 0 K |
| -40 °C | 233.15 K |
| 0 °C | 273.15 K |
| 20 °C | 293.15 K |
| 25 °C | 298.15 K |
| 100 °C | 373.15 K |
| 200 °C | 473.15 K |
| 500 °C | 773.15 K |
Temperature Conversions
About Temperature Scales
Celsius (°C) is based on the freezing (0°) and boiling (100°) points of water at sea level. It's used by most countries worldwide.
Fahrenheit (°F) sets water's freezing point at 32° and boiling at 212°. It's primarily used in the United States.
Kelvin (K) is the SI unit for temperature, starting at absolute zero. It's used in scientific applications where a scale starting at zero is useful.
Frequently Asked Questions
Use the formula: °F = (°C × 9/5) + 32. For example, 20°C = (20 × 9/5) + 32 = 68°F.
Use the formula: °C = (°F - 32) × 5/9. For example, 68°F = (68 - 32) × 5/9 = 20°C.
Absolute zero is 0 Kelvin (-273.15°C or -459.67°F). It is the lowest possible temperature where all molecular motion stops.
Celsius is based on water (0° freezing, 100° boiling), Fahrenheit was designed around human body temperature, and Kelvin is the scientific standard starting at absolute zero.