Quick reference
- 32 °F = 0 °C (water freezing)
- 68 °F = 20 °C (room temperature)
- 98.6 °F = 37 °C (body temperature)
- 212 °F = 100 °C (water boiling at 1 atm)
- −40 °F = −40 °C (only point where they meet)
FAQ
Quick mental shortcut?
Subtract 30 and halve. 70 °F → 20 °C (actual 21), 100 °F → 35 °C (actual 38). Within a few degrees.