Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin instantly. Includes baking and oven reference points.
Runs entirely in your browser. Nothing is sent to our servers.
About this tool
Converts between Celsius, Fahrenheit, and Kelvin in real time. Edit any field; the others update automatically. Useful when reading a US recipe in Fahrenheit, dialing in an oven, checking a fever, or doing physics homework.
The formulas
- °F = °C × 9/5 + 32
- °C = (°F − 32) × 5/9
- K = °C + 273.15
Unlike length or weight conversions, temperature is linear with an offset, not just a scaling factor. That's why you can't say "1°C = some-number-of-°F" the way you can say "1 kg = 2.205 lb".
Quick reference for Canadians
- 0°C = 32°F — water freezing point
- 20°C = 68°F — comfortable room temperature
- 37°C = 98.6°F — normal body temperature
- 100°C = 212°F — water boiling at sea level
- 180°C = 350°F — most common baking temperature
- 200°C = 400°F — roasting / hotter bake
- −40°C = −40°F — the one place where the scales meet
Frequently asked questions
- Why is body temperature 37°C and not 37.0°C exactly?
- 37°C is the long-standing textbook value but real human body temperature varies. Studies in the past decade have shown the modern average is closer to 36.6°C, with normal range roughly 36.1–37.2°C. A "fever" is generally clinically defined as 38°C or higher.
- What about Rankine?
- Rankine (°R) is Fahrenheit's absolute-zero equivalent — like Kelvin but using the Fahrenheit-sized degree. It's used in some US engineering contexts but rare elsewhere. Convert with °R = °F + 459.67.
- Why does the oven temperature differ between my recipe sources?
- Most baking happens in the 165°C–230°C range. US recipes use Fahrenheit (325°F–450°F), and there's rounding noise when translating. 350°F is exactly 176.7°C but every Canadian oven calls it "180°C" — that 3-degree gap is normal and won't affect your baking.
- Can I use negative Kelvin?
- No. Kelvin is an absolute scale starting at absolute zero (−273.15°C). The tool will let you enter negative Kelvin values mathematically, but physically you can't go below 0 K.
Last updated: May 17, 2026