30°C in Fahrenheit
The exact conversion, the formula, and a mental shortcut that is close enough for weather.
The formula
Multiply by 9/5 and add 32.
(30 × 9 ÷ 5) + 32 = 54 + 32 = 86 °F
For weather, a shortcut that needs no calculator is to double the Celsius and add 30: 30 × 2 + 30 = 90, against an exact 86. It drifts by about 2 °F per 10 °C, which is fine for deciding what to wear and useless for cooking.
What this temperature feels like
Hot. Above body temperature at the top of this range, so shade and water matter.
Nearby temperatures
| Celsius | Fahrenheit | Kelvin |
|---|---|---|
| 25 °C | 77 °F | 298.15 K |
| 26 °C | 78.8 °F | 299.15 K |
| 27 °C | 80.6 °F | 300.15 K |
| 28 °C | 82.4 °F | 301.15 K |
| 29 °C | 84.2 °F | 302.15 K |
| 31 °C | 87.8 °F | 304.15 K |
| 32 °C | 89.6 °F | 305.15 K |
| 33 °C | 91.4 °F | 306.15 K |
| 34 °C | 93.2 °F | 307.15 K |
| 35 °C | 95 °F | 308.15 K |
Frequently asked questions
What is 30°C in Fahrenheit?
86°F. Multiply the Celsius figure by 9/5 and add 32.
What is the formula?
°F = (°C × 9/5) + 32. To go the other way, °C = (°F − 32) × 5/9.
At what temperature are the two scales equal?
−40. That is the single point where Celsius and Fahrenheit give the same number, which makes it a handy check on any conversion you do by hand.
Nearby values
Last reviewed September 5, 2026.