Celsius to Fahrenheit Calculator
Convert a temperature in Celsius (°C) to Fahrenheit (°F). Enter a Celsius temperature to see the equivalent in Fahrenheit.
How It Works
Multiply the Celsius temperature by 9/5 (the ratio of degree sizes between the two scales), then add 32 (to account for the offset between where each scale starts). Water freezes at 0°C / 32°F and boils at 100°C / 212°F.
Worked Examples
Example 1. 37°C (body temp): (37 × 9/5) + 32 = 66.6 + 32 = 98.6°F.
Example 2. 0°C (freezing): (0 × 9/5) + 32 = 32°F.
When to Use This Calculator
Use when converting metric temperatures to familiar US units, reading a Celsius thermometer, or following an international recipe.
Frequently Asked Questions
What is 100°C in Fahrenheit?
(100 × 9/5) + 32 = 180 + 32 = 212°F — the boiling point of water at sea level.
Quick estimate?
Double the Celsius and add 30. For example, 20°C: 20×2=40, 40+30=70°F. Exact is 68°F.
What is the reverse?
Use the Fahrenheit to Celsius Calculator.