Temperature
converter
Type in any scale — Celsius, Fahrenheit or kelvin — and the other two update live. With the reference points that make foreign forecasts and oven dials make sense.
Three scales, two formulas
Celsius pins 0 and 100 to water freezing and boiling. Fahrenheit runs the same span from 32 to 212 — hence the 9/5 slope. Kelvin is Celsius shifted to start at absolute zero (−273.15°C), which is why science uses it: no negative temperatures exist.
Anchor points worth memorizing
37°C = 98.6°F body · 100°C = 212°F boiling · 180°C = 356°F oven
Quick mental version: double the Celsius and add 30 — close enough for weather (20°C → ~70°F). For kitchen work in cups and grams instead, the cups-to-grams converter handles the other half of recipe translation.
Temperature FAQ
Multiply by 9/5 and add 32: 20°C × 1.8 + 32 = 68°F. For quick mental weather math, double it and add 30.
−40 degrees — the two lines cross there. It's the only point where Celsius and Fahrenheit agree.
Science — it starts at absolute zero (−273.15°C), the coldest possible temperature, so no values are negative. A kelvin step equals a Celsius step; only the zero point differs.
About 37°C or 98.6°F, with normal individual variation of half a degree Celsius either way.