Temperature Converter
Instantly convert Celsius (°C), Fahrenheit (°F), Kelvin (K), Rankine (°R), Réaumur (°Ré) and Newton (°N). Type in any unit; all others update automatically.
Celsius
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FAQ
How do I convert °C to °F quickly?
Use: °F ≈ °C × 2 + 30. Exact: °F = (°C × 9/5) + 32.
What is absolute zero?
0 K (−273.15 °C, −459.67 °F): theoretical minimum thermal energy.
When to use Kelvin or Rankine?
Use K for SI scientific work; °R is the absolute scale aligned to °F (engineering legacy).
Why Réaumur or Newton?
Historical scales appearing in older literature/recipes. Included for completeness and quick reference.