4 units
Temperature Converter
Temperature scales are not linear — Celsius and Fahrenheit have different zero points, and Kelvin/Rankine are absolute scales. This converter uses the exact offset formulas.
Popular temperature conversions
Common temperature conversions
| From | Equivalent |
|---|---|
| 0 °C | 32 °F · 273.15 K · 491.67 °R |
| 25 °C | 77 °F · 298.15 K · 536.67 °R |
| 37 °C | 98.6 °F · 310.15 K · 558.27 °R |
| 100 °C | 212 °F · 373.15 K · 671.67 °R |
How the conversion works
`°F = °C × 9/5 + 32` · `K = °C + 273.15` · `°R = (°C + 273.15) × 9/5`.
When you'll use this converter
- Weather and climate (°C ↔ °F)
- Cooking and baking (°F ↔ °C for ovens)
- Science labs (K for absolute zero, low-temperature physics)
- Engineering thermodynamics (Rankine in some imperial systems)
Frequently asked
What is 100°F in Celsius?
100°F = (100 − 32) × 5/9 = 37.78°C — close to human body temperature.
Is 0 K really the coldest possible temperature?
Yes. 0 Kelvin is absolute zero (−273.15°C), the theoretical lowest temperature where all classical motion stops.
Why is the Fahrenheit-to-Celsius formula not just a multiplication?
Because the zero points differ: 0°C corresponds to 32°F, so an offset of 32 is required in addition to the 5/9 scale factor.