Supported Temperature Units
- Celsius (°C): Metric scale where water freezes at 0°C and boils at 100°C.
- Fahrenheit (°F): Imperial scale where water freezes at 32°F and boils at 212°F.
- Kelvin (K): Absolute thermodynamic scale starting at absolute zero (0 K = -273.15°C).
- Rankine (°R): Absolute temperature scale using Fahrenheit interval size.
How Temperature Conversion Works
Unlike fixed linear factors, temperature conversions require offset adjustments: °F = (°C × 9/5) + 32, °C = (°F - 32) × 5/9, and K = °C + 273.15.
Frequently Asked Questions
At what temperature are Celsius and Fahrenheit equal?
-40° Celsius is equal to -40° Fahrenheit.
How do you convert °C to °F in your head?
Multiply the Celsius temperature by 2, then add 30 for a quick mental estimate (e.g. 20°C × 2 + 30 = 70°F, actual is 68°F).