−39 °C at a glance
- Fahrenheit
- −38.2 °F
- Kelvin
- 234.15 K
- Rankine
- 421.47 °R
- Rounded
- −38 °F
- Quick estimate
- −48 °F
- As a change (Δ)
- Δ−39 °C = Δ−70.2 °F
How to convert −39 °C to Fahrenheit
−39 × 1.8 = −70.2
−70.2 + 32 = −38.2 °F
Multiply by 9/5 (1.8) because each Celsius degree spans 1.8 Fahrenheit degrees, then add 32 because water freezes at 32 °F rather than 0. The answer always has at most one decimal place, because multiplying a whole number by 1.8 can only leave tenths.
Estimate it in your head
Double it and add 30: −39 × 2 + 30 = −48 °F, which is 9.8 degrees low — good for weather, not for cooking or medicine.
Careful with temperature changes: a rise of 39 °C is a rise of 70.2 °F — multiply by 1.8 but do not add 32.
What −39 °C feels like
−39 °C is −38.2 °F. That is 21.0 degrees colder than a home freezer at −18 °C (0 °F). Environment Canada and the US National Weather Service both warn that frostbite can develop within 30 minutes once the wind chill reaches about −28 °C (−18 °F).
| Wind | Feels like | In °F | Note |
|---|---|---|---|
| 10 km/h | −50 °C | −58 °F | Frostbite possible in 30 min or less |
| 20 km/h | −54 °C | −66 °F | Frostbite possible in 30 min or less |
| 40 km/h | −60 °C | −75 °F | Frostbite possible in 30 min or less |
Temperatures near −39 °C
| Celsius | Fahrenheit | Kelvin |
|---|---|---|
| −40 °C | −40 °F | 233.15 K |
| −39 °C | −38.2 °F | 234.15 K |
| −38 °C | −36.4 °F | 235.15 K |
| −37 °C | −34.6 °F | 236.15 K |
| −36 °C | −32.8 °F | 237.15 K |
| −35 °C | −31 °F | 238.15 K |
| −34 °C | −29.2 °F | 239.15 K |
Going the other way: −38 °F in Celsius is −38.89 °C.
Frequently asked questions
What is −39 °C in Fahrenheit?
−39 °C is −38.2 °F: multiply by 1.8 (−70.2) and add 32.
Is −39 °C hot or cold?
−39 °C is severe cold — colder than a home freezer.
How do you convert −39 °C to Fahrenheit quickly?
Double it and add 30: −48 °F. The exact value is −38.2 °F.
What is −39 °C in Kelvin?
Add 273.15: −39 °C = 234.15 K.