Temperature Converter
Convert between Celsius (°C), Fahrenheit (°F), Kelvin (K), and Rankine (°R). Handles offset-based formulas correctly — not just simple multiplication.
1 Celsius (°C) = 33.8 Fahrenheit (°F)
1 Celsius (°C) in all units
| Unit | Value |
|---|---|
| Celsius (°C)input | 1 |
| Fahrenheit (°F) | 33.8 |
| Kelvin (K) | 274.15 |
| Rankine (°R) | 493.47 |
How to Use the Temperature Converter
- 1
Select the temperature scale you want to convert FROM (e.g. Celsius).
- 2
Enter the temperature value.
- 3
Select the scale you want to convert TO (e.g. Fahrenheit).
- 4
The converted temperature appears instantly.
- 5
Use the ⇄ swap button to reverse the direction.
- 6
See all four scales in the conversion table below.
Temperature Conversion Formulas
°F = (°C × 9/5) + 32
°C = (°F − 32) × 5/9
K = °C + 273.15
°R = (°C + 273.15) × 9/5Frequently Asked Questions
How do I convert Celsius to Fahrenheit?
Formula: °F = (°C × 9/5) + 32. For example, 100°C = 212°F, 0°C = 32°F, 37°C (body temp) = 98.6°F.
What is absolute zero?
Absolute zero is 0 K = −273.15°C = −459.67°F. It is the lowest theoretically possible temperature where all thermal motion stops.
What is Rankine?
Rankine (°R) is an absolute temperature scale like Kelvin but based on Fahrenheit degrees. 0°R = absolute zero. Used in some US engineering fields.
At what temperature are Celsius and Fahrenheit equal?
Celsius and Fahrenheit are equal at −40°. That is, −40°C = −40°F.