Temperature Converter

The exact formula is °F = °C × 9/5 + 32. For a quick mental estimate use "double it and add 30" (°C × 2 + 30). At everyday temperatures the shortcut is close — 20 °C gives 70 vs the exact 68 °F — but the error grows as you move away from 10-20 °C, reaching about 6 °F near boiling. For cooking or fever checks, use the exact converter above rather than the approximation.

350 °F is about 176.7 °C, which most ovens round to 175 °C or 180 °C — the classic "moderate oven" for cakes and roasts. Other common US baking temperatures: 325 °F ≈ 160 °C, 375 °F ≈ 190 °C, 400 °F ≈ 200 °C and 425 °F ≈ 220 °C. Type 350 into the Fahrenheit box above to see the exact Celsius and Kelvin values.

Kelvin is an absolute thermodynamic unit, not a scale of "degrees" measured from an arbitrary point. Since the 1967 SI redefinition, temperatures are written as "300 K", not "300 °K". Each kelvin is exactly the same size as one degree Celsius, so the two scales differ only by an offset of 273.15.

Absolute zero is the lowest temperature possible: −273.15 °C, −459.67 °F, or 0 K. At that point molecular motion reaches its theoretical minimum, so nothing can get colder. This converter shows values below absolute zero for reference but flags them with a warning, because no real substance can actually reach such a temperature.

No. This temperature converter runs entirely in your browser using plain JavaScript — every Celsius, Fahrenheit and Kelvin calculation happens on your device. Nothing you type is uploaded, stored or tracked, and the tool keeps working offline once the page has loaded.