Temperature Converter

Temperature converters handle the only common non-linear conversions on this site — Celsius, Fahrenheit, and Kelvin all use different zero points and scale sizes.

• Cooking

  Recipes from US cookbooks list oven temperatures in °F; convert to °C for European ovens (or vice versa).

• Weather

  Forecasts use °C nearly everywhere except the US — 30 °C is warm (86 °F); −10 °C is freezing (14 °F).

• Science & engineering

  Many physics and chemistry calculations require absolute temperature in Kelvin.

• Healthcare

  Body temperature thresholds — like 38 °C (100.4 °F) for fever — need accurate conversion across regions.

• Forgetting the 32-degree offset

  °F = °C × 9/5 + 32. Skipping the +32 is the most common Celsius-to-Fahrenheit error.

• Treating Kelvin like Celsius

  K = °C + 273.15. There is no degree symbol with Kelvin — write '300 K', not '300 °K'.

• Negative Fahrenheit ≠ negative Celsius

  −40 is the one point where °F and °C are equal. Above that, the numbers diverge in opposite directions.