Celsius to Fahrenheit Converter
Free Celsius to Fahrenheit converter using the exact formula °F = °C × 9/5 + 32. Works both ways with an oven and weather table.
About the Celsius to Fahrenheit Converter
Convert Celsius to Fahrenheit with the exact formula °F = °C × 9/5 + 32 — no rounded shortcuts. Enter a temperature in either field and the other updates instantly, so 20 °C becomes 68 °F and 37 °C (normal body temperature) becomes 98.6 °F.
This conversion comes up constantly: reading a US weather forecast while used to Celsius, following an American recipe with a Celsius oven (180 °C = 356 °F, close to the classic 350 °F), checking a fever thermometer, or setting a thermostat abroad. The reference table below covers freezing (0 °C = 32 °F), everyday weather, body temperature and common oven settings from 160 to 220 °C.
Unlike length or weight, temperature is not a simple multiplication — the two scales have different zero points — so the tool applies the full algebraic formula in both directions.
How to Use the Celsius to Fahrenheit Converter
- 1Enter a temperature in Celsius — for example 20.
- 2Read the Fahrenheit equivalent instantly (20 °C = 68 °F).
- 3Type in the Fahrenheit field instead to convert the other way.
- 4Check the table for weather, body and oven temperatures.
Frequently Asked Questions
What is 37 degrees Celsius in Fahrenheit?
37 °C is 98.6 °F — normal human body temperature. A fever of 38 °C is 100.4 °F, and 40 °C is a high fever at 104 °F.
What is 180 °C in Fahrenheit for baking?
180 °C is 356 °F, which corresponds to the standard American baking temperature of 350 °F. Other oven settings: 160 °C = 320 °F, 200 °C = 392 °F (≈ 400 °F) and 220 °C = 428 °F (≈ 425 °F).
How do I convert Celsius to Fahrenheit in my head?
Exact: multiply by 9/5 and add 32. Quick estimate: double the Celsius value and add 30 — for 20 °C that gives 70, close to the true 68 °F. The estimate is within a few degrees for everyday weather temperatures.
At what temperature are Celsius and Fahrenheit equal?
At -40 degrees: -40 °C = -40 °F exactly. It is the only point where the two scales meet, because they rise at different rates from different zero points.
What is 0 °C and 100 °C in Fahrenheit?
0 °C (water freezes) is 32 °F, and 100 °C (water boils at sea level) is 212 °F. The 100-degree Celsius span maps onto 180 Fahrenheit degrees, which is where the 9/5 ratio comes from.