Temperature Converter
Convert between Celsius, Fahrenheit, Kelvin, and Rankine instantly. Type a value in any unit to see the others.
Enter a temperature
Tap any value to copy it.
How to use this calculator
1. Type a value
Enter a number in any unit. Negative values work too — useful for converting freezer temperatures or polar climates.
2. Pick the direction
Choose a From unit and a To unit — the headline shows exactly that conversion. Tap ⇄ to flip the direction. The result grid below still shows all four scales at once, and clicking any of them copies the value.
3. Or use a preset
Quick-fill chips cover common conversions: body temperature, oven heat, room temperature in Kelvin, and absolute zero.
Quick reference for cooking
350°F ≈ 175°C (standard baking). 400°F ≈ 200°C (roasting). 425°F ≈ 220°C (high-heat roasting). 165°F = 74°C (safe internal poultry temperature).
Temperature formulas
Celsius ↔ Fahrenheit
°F = °C × 9/5 + 32 · °C = (°F − 32) × 5/9. The two scales coincide at −40°.
Kelvin
K = °C + 273.15. Kelvin uses the same step size as Celsius but starts at absolute zero, the theoretical lowest temperature.
Rankine
°R = °F + 459.67. It's to Fahrenheit what Kelvin is to Celsius — an absolute scale using Fahrenheit-sized degrees.