Temperature Converter
Celsius, Fahrenheit, Kelvin and Rankine.
100 Celsius =Fahrenheit (°F)
| Unit | Value |
|---|---|
| Celsius (°C) | 100 |
| Fahrenheit (°F) | 212 |
| Kelvin (K) | 373.15 |
| Rankine (°R) | 671.67 |
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How this calculator works
Temperature scales have different zero points, so the value is first converted to Celsius and then to the target scale.
Formula
°F = °C × 9/5 + 32; K = °C + 273.15
Example
100 °C is 212 °F, the boiling point of water at sea level.
When to use it
- Weather and travel
- Oven temperatures
- Science and lab work
Frequently asked questions
Is there a quick way to convert Celsius to Fahrenheit?
Double the Celsius value and add 30 for a rough estimate. For an exact answer, multiply by 1.8 and add 32.
When are Celsius and Fahrenheit equal?
At −40, where both scales show the same number.
Learn more
Celsius to Fahrenheit: the formula, a quick trick and a chart for everyday use
Convert Celsius and Fahrenheit exactly or in your head, with charts for weather, cooking, food safety and fevers.
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A single step-by-step method that converts any unit, including area, volume, speed and temperature, plus quick checks to catch mistakes.