Pakistan’s weather reports use Celsius, but many thermometers, American recipes and some medical devices use Fahrenheit. When the forecast says 45 °C in Jacobabad or a recipe says bake at 350 °F, you need to convert. This guide explains how to convert Celsius to Fahrenheit and back, with a chart and a quick mental trick. Our free Celsius to Fahrenheit converter does it instantly.
The formula
°F = °C × 9 ÷ 5 + 32
°C = (°F − 32) × 5 ÷ 9
Examples
- 25 °C × 9 ÷ 5 + 32 = 77 °F
- 37 °C (normal body temperature) = 98.6 °F
- 45 °C = 113 °F
- 350 °F (oven) = (350 − 32) × 5 ÷ 9 = 176.7 °C, usually set as 180 °C
Mental trick
Double the Celsius and add 30. 25 °C: 50 + 30 = 80 °F (exact 77). It is close enough for weather.
To go back, subtract 30 and halve. 90 °F: 60 ÷ 2 = 30 °C (exact 32.2).
Quick chart
| °C | °F | Feels like |
|---|---|---|
| −10 | 14 | Very cold |
| 0 | 32 | Water freezes |
| 10 | 50 | Cool |
| 20 | 68 | Mild |
| 30 | 86 | Warm |
| 37 | 98.6 | Body temperature |
| 40 | 104 | Hot |
| 50 | 122 | Extreme heat |
| 100 | 212 | Water boils (at sea level) |
Kelvin
Scientists use Kelvin: K = °C + 273.15. Our converter shows Kelvin too.
The point where they meet
At −40, Celsius and Fahrenheit are equal: −40 °C = −40 °F.
Fever readings
A body temperature of about 38 °C (100.4 °F) or above is commonly considered a fever. Readings depend on where and how the temperature is taken. For medical concerns, follow a doctor’s advice. Read fever temperatures in °C and °F for more.
Cooking
Oven settings in recipes often use Fahrenheit. Common settings: 325 °F ≈ 160 °C, 350 °F ≈ 180 °C, 400 °F ≈ 200 °C, 450 °F ≈ 230 °C. For cups, ounces and grams, our Unit Converter helps with other recipe units.
Weather and travel
If you are travelling to the US, temperatures will be in Fahrenheit. Remember: 70 °F is pleasant, 90 °F is hot, and 32 °F is freezing. Check local times there with the Time Zone Converter.
Frequently asked questions
What is the formula to convert Celsius to Fahrenheit?
Multiply by 9/5 and add 32.
What is 40 °C in Fahrenheit?
104 °F.
What is 100 °F in Celsius?
About 37.8 °C.
At what temperature are Celsius and Fahrenheit equal?
At −40 degrees.