Temperature Converter
Convert temperature between Celsius (°C), Fahrenheit (°F) and Kelvin (K) instantly, with all three shown at once.
Temperature Converter
Temperature — Result
33.8 F
1 Celsius = 33.8 Fahrenheit
How It Works
Temperature is different from most unit conversions because the scales have different zero points, so you cannot use a single multiplication factor. Celsius sets 0° at the freezing point of water and 100° at boiling. Fahrenheit sets those same points at 32° and 212°, so converting requires both a scale factor (9/5) and an offset (32): °F = °C × 9/5 + 32. Kelvin is the absolute scale used in science, starting at absolute zero (the coldest possible temperature) — it shares Celsius's degree size but is shifted by 273.15, so K = °C + 273.15. This converter handles all three by first converting your input to Celsius and then to the target scale, so any combination works correctly. It is handy for cooking with international recipes, understanding weather abroad, and science or engineering work where Kelvin is standard.
Formula
°F = °C × 9/5 + 32. K = °C + 273.15. °C = (°F − 32) × 5/9.
Frequently Asked Questions
How do I convert Celsius to Fahrenheit?
Multiply by 9/5 (1.8) and add 32: °F = °C × 9/5 + 32. For example, 37°C (body temperature) = 37 × 1.8 + 32 = 98.6°F.
How do I convert Fahrenheit to Celsius?
Subtract 32, then multiply by 5/9: °C = (°F − 32) × 5/9. For example, 100°F = (100 − 32) × 5/9 ≈ 37.8°C.
What is Kelvin and how does it relate to Celsius?
Kelvin is the absolute temperature scale used in science, starting at absolute zero (−273.15°C). It uses the same degree size as Celsius, so K = °C + 273.15. Water freezes at 273.15 K.
At what temperature are Celsius and Fahrenheit equal?
At −40°, the two scales read the same: −40°C = −40°F. It is the single point where the formulas intersect.
What is normal body temperature in each scale?
About 37°C, 98.6°F, or 310.15 K. A converter is handy when a thermometer or recipe uses a scale you are less familiar with.