To convert a temperature from Celsius (°C) to Fahrenheit (°F), use the following formula:

°F=(°C×95)+32°F=(°C\times \frac{9}{5})+32°F=(°C×59​)+32

Or equivalently:

°F=(°C×1.8)+32°F=(°C\times 1.8)+32°F=(°C×1.8)+32

Steps to convert Celsius to Fahrenheit:

1. Multiply the Celsius temperature by 9/5 (or 1.8).
2. Add 32 to the result.
3. The final number is the temperature in Fahrenheit.

Example: Convert 20°C to Fahrenheit:

°F=(20×1.8)+32=36+32=68°F°F=(20\times 1.8)+32=36+32=68°F°F=(20×1.8)+32=36+32=68°F

So, 20°C equals 68°F

. Quick estimation trick:
If you need a fast approximate conversion without a calculator, multiply the Celsius temperature by 2 and then add 30. This gives a close estimate for most everyday temperatures. For example, 15°C roughly converts to:

(15×2)+30=60°F(15\times 2)+30=60°F(15×2)+30=60°F

The exact value is 59°F, so this method is quite close

. Summary:

Method| Formula/Rule| Accuracy
---|---|---
Exact conversion| °F=°C×1.8+32°F=°C\times 1.8+32°F=°C×1.8+32| Precise
Quick estimation| °F≈°C×2+30°F\approx °C\times 2+30°F≈°C×2+30| Approximate (±1-2°F)

This formula and trick will help you convert Celsius temperatures into Fahrenheit easily and accurately.