Step by step
- Type 1 into the Celsius input box to see 33.8 °F as a temperature reading.
- Read the formula °F = °C × 9/5 + 32 displayed below the result.
- Press the swap button to convert 1 °F to Celsius (−17.22 °C).
- Multiply any temperature difference in °C by 1.8 to find the change in °F.
At a glance
| Type of value | Celsius (°C) | Fahrenheit (°F) |
|---|---|---|
| Actual temperature | 1 °C | 33.8 °F |
| Temperature change | 1 °C change | 1.8 °F change |
| Actual temperature | −17.22 °C | 1 °F |
| Temperature change | 0.56 °C change | 1 °F change |
Related questions
Why is 1 °C equal to 33.8 °F instead of 1.8 °F?
The two scales have different starting points. Water freezes at 0 °C, which is 32 °F, so you must add 32 after multiplying by 1.8.
How much is 1 degree Fahrenheit in Celsius?
As a temperature reading, 1 °F equals −17.22 °C. As a temperature difference, a 1 °F change equals 0.56 °C.
When do I use 1.8 instead of adding 32?
Use 1.8 alone when measuring a rise or drop in temperature, such as a 1 °C fever increase or a 1 °C weather forecast change.
More questions: celsius to fahrenheit converter
- How to Convert Celsius to Fahrenheit
- How to Convert Fahrenheit to Celsius
- Easy Way to Convert Celsius to Fahrenheit
- Celsius to Fahrenheit Chart for Weather, Fever, and Oven
- Why Is -40 Celsius and Fahrenheit the Same?
- Celsius vs Fahrenheit: What Is the Difference?
- What Is 18 Degrees Celsius in Fahrenheit?
- What Is −20 Celsius in Fahrenheit?
- How Do Celsius, Fahrenheit and Kelvin Relate?
- How to Change Celsius to Fahrenheit in Your Weather App
- Code and Excel Formulas to Convert Celsius to Fahrenheit
- What Is 200 Celsius to Fahrenheit?
- 100 Fahrenheit to Celsius: Is It a Fever?
Open the full celsius to fahrenheit converter →
Updated November 14, 2026.