1 °C at a glance
- Fahrenheit
- 33.8 °F
- Kelvin
- 274.15 K
- Rankine
- 493.47 °R
- Rounded
- 34 °F
- Quick estimate
- 32 °F
- As a change (Δ)
- Δ1 °C = Δ1.8 °F
How to convert 1 °C to Fahrenheit
°F = °C × 9/5 + 32
1 × 1.8 = 1.8
1.8 + 32 = 33.8 °F
1 × 1.8 = 1.8
1.8 + 32 = 33.8 °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: 1 × 2 + 30 = 32 °F, which is 1.8 degrees low.
Careful with temperature changes: a rise of 1 °C is a rise of 1.8 °F — multiply by 1.8 but do not add 32.
1 °C in the fridge and outdoors
- Refrigerators. Food-safety agencies recommend keeping a fridge at 4 °C (40 °F) or colder; 1 °C (33.8 °F) is comfortably inside the safe range.
- Frost risk. On clear, calm nights, frost can form on cars and grass when the reported air temperature is 1 °C, because surfaces radiate heat away and cool below the air measured higher up.
- Wind chill. Outdoors, wind makes 1 °C feel colder:
| Wind | Feels like | In °F | Note |
|---|---|---|---|
| 10 km/h | −2 °C | 28 °F | Dress in layers |
| 20 km/h | −4 °C | 25 °F | Dress in layers |
| 40 km/h | −6 °C | 21 °F | Dress in layers |
Temperatures near 1 °C
| Celsius | Fahrenheit | Kelvin |
|---|---|---|
| −4 °C | 24.8 °F | 269.15 K |
| −3 °C | 26.6 °F | 270.15 K |
| −2 °C | 28.4 °F | 271.15 K |
| −1 °C | 30.2 °F | 272.15 K |
| 0 °C | 32 °F | 273.15 K |
| 1 °C | 33.8 °F | 274.15 K |
| 2 °C | 35.6 °F | 275.15 K |
| 3 °C | 37.4 °F | 276.15 K |
| 4 °C | 39.2 °F | 277.15 K |
| 5 °C | 41 °F | 278.15 K |
| 6 °C | 42.8 °F | 279.15 K |
Going the other way: 34 °F in Celsius is 1.11 °C.
Frequently asked questions
What is 1 °C in Fahrenheit?
1 °C is 33.8 °F: multiply by 1.8 (1.8) and add 32.
Is 1 °C hot or cold?
1 °C is cold — refrigerator temperature.
How do you convert 1 °C to Fahrenheit quickly?
Double it and add 30: 32 °F. The exact value is 33.8 °F.
What is 1 °C in Kelvin?
Add 273.15: 1 °C = 274.15 K.