Temperature Converter
Convert between Fahrenheit, Celsius, and Kelvin instantly. All conversions update simultaneously as you type.
Conversion Summary
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Fahrenheit
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Celsius
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Kelvin
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How to Use the Temperature Converter
- Enter a temperature in any of the three fields (Fahrenheit, Celsius, or Kelvin).
- See all conversions instantly — the other two fields update automatically.
- Copy all results with the Copy All button.
Temperature Conversion Formulas
| Conversion | Formula |
|---|---|
| Fahrenheit to Celsius | °C = (°F - 32) × 5/9 |
| Celsius to Fahrenheit | °F = (°C × 9/5) + 32 |
| Celsius to Kelvin | K = °C + 273.15 |
| Kelvin to Celsius | °C = K - 273.15 |
| Fahrenheit to Kelvin | K = (°F - 32) × 5/9 + 273.15 |
| Kelvin to Fahrenheit | °F = (K - 273.15) × 9/5 + 32 |
Common Temperature Reference Points
| Description | Fahrenheit | Celsius | Kelvin |
|---|---|---|---|
| Absolute Zero | -459.67°F | -273.15°C | 0 K |
| Water Freezes | 32°F | 0°C | 273.15 K |
| Room Temperature | 72°F | 22.2°C | 295.4 K |
| Body Temperature | 98.6°F | 37°C | 310.15 K |
| Water Boils | 212°F | 100°C | 373.15 K |
Frequently Asked Questions
What is the difference between Celsius and Fahrenheit?
Celsius and Fahrenheit are two different temperature scales. Celsius is used by most countries worldwide and sets water's freezing point at 0 and boiling point at 100. Fahrenheit is primarily used in the United States and sets water's freezing point at 32 and boiling point at 212.
What is Kelvin used for?
Kelvin is the SI unit of temperature used primarily in science and engineering. Its scale starts at absolute zero (0 K), the theoretically coldest possible temperature. Each degree Kelvin is the same size as a degree Celsius.
At what temperature are Fahrenheit and Celsius equal?
Fahrenheit and Celsius are equal at -40 degrees. That is, -40°F = -40°C. This is the only point where the two scales intersect.