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Temperature Converters
Free, instant converters for the three temperature scales Americans use every day: Fahrenheit (°F), Celsius (°C) and Kelvin (K). Each tool shows the exact formula, a worked example, a reference table and a conversion chart. No sign-up, no clutter.
Kelvin conversions
Fahrenheit vs Celsius
The two scales meet at −40°, where °F and °C read the same. Dots mark freezing, room temperature, body temperature and boiling.
Which temperature scale should I use?
In the United States, day-to-day weather, cooking and body temperature are almost always given in Fahrenheit. Most of the rest of the world, along with science classes and medical charts, uses Celsius. Kelvin is the SI base unit for temperature and starts at absolute zero, so it is standard in physics, chemistry and engineering. These converters let you move between all three in one click.
| Reference point | °F | °C | K |
|---|---|---|---|
| Absolute zero | −459.67 | −273.15 | 0 |
| Water freezes | 32 | 0 | 273.15 |
| Room temperature | 68 | 20 | 293.15 |
| Body temperature | 98.6 | 37 | 310.15 |
| Water boils | 212 | 100 | 373.15 |