How do I convert Fahrenheit to Celsius?

Subtract 32 from the Fahrenheit value, multiply by 5, then divide by 9. For example, 98.6 degrees Fahrenheit minus 32 is 66.6, times 5 divided by 9 gives 37 degrees Celsius, normal body temperature.

What is Kelvin used for?

Kelvin is the scientific temperature scale that starts at absolute zero, the coldest possible temperature. To convert Celsius to Kelvin, simply add 273.15. Kelvin is never written with a degree symbol.

At what temperature are Celsius and Fahrenheit equal?

Minus 40. At -40 degrees, the Celsius and Fahrenheit scales read exactly the same number, which is a handy sanity check for any conversion.

What is a normal oven temperature in both scales?

A moderate oven is about 180 degrees Celsius, which is 356 degrees Fahrenheit, often written as 350 F in recipes. A hot oven for pizza is around 250 C or 482 F.

CALCULATORS · FREE ONLINE TOOL

Temperature Converter

Convert Celsius, Fahrenheit and Kelvin instantlyThe recipe says 350°F, your oven speaks Celsius, and dinner is in an hour. This tool converts between Celsius, Fahrenheit and Kelvin instantly in any direction: type a value in one scale and read all three.

✓ Free to use✓ No sign-up✓ Ready in your browser

// TEMPERATURE CONVERTER · GET STARTED

Use Temperature Converter

Convert Celsius, Fahrenheit and Kelvin instantly

Celsius (°C)

Fahrenheit (°F)

Kelvin (K)

Type in any field and the other two scales update instantly. Kelvin cannot go below 0, absolute zero.

Reference temperatures

Absolute zero: -273.15 °C · -459.67 °F · 0 K

Water freezes: 0 °C · 32 °F · 273.15 K

Room temperature: 21 °C · 69.8 °F · 294.15 K

Normal body temperature: 37 °C · 98.6 °F · 310.15 K

Moderate oven: 180 °C · 356 °F · 453.15 K

Water boils (sea level): 100 °C · 212 °F · 373.15 K

Formulas: °F = (°C × 9/5) + 32 · °C = (°F − 32) × 5/9 · K = °C + 273.15

// TEMPERATURE CONVERTER · HOW IT WORKS

How to use the Temperature Converter

Type a temperature

Type a temperature into the Celsius, Fahrenheit or Kelvin field.

See all three scales

The other two scales update instantly as you type.

Compare reference points

Check the reference table for common temperatures like body heat and boiling water.

// TEMPERATURE CONVERTER · ABOUT THIS TOOL

About the Temperature Converter

Temperature is the conversion people need most often and get wrong most often, because Celsius and Fahrenheit differ in size and starting point. This converter handles the offset properly: type in any of the three fields and the Celsius, Fahrenheit and Kelvin values stay in sync. Reference points under the converter, from absolute zero to water boiling, help you sanity check a result. Useful for recipes, weather, science homework and travel.

Where it helps most

Tiny tasks that block real life.

Cooking temperatures

The recipe says 350°F and your oven speaks Celsius; convert it exactly without the mental gymnastics before dinner burns tonight.

Travel forecasts

The weather app shows 72°F for your destination; interpret the foreign forecast before deciding between a jacket and sunscreen for the trip.

School labs

Students get the Kelvin conversions that physics and chemistry demand, where forgetting the 273.15 offset is the classic exam error.

Precise work

A medication storage range or a lab protocol gets the precise figure it needs rather than a close-enough guess from memory.

Converting well

Anchors you already know.

Reference points

Water freezes at 0°C / 32°F / 273.15K and boils at 100°C / 212°F / 373.15K; body temperature sits near 37°C.

Sanity-check results

Having the freezing and boiling anchors visible makes every conversion intuitive, because you can sanity-check any result against points you know.

Exact decimals

The tool applies the formulas exactly, including all the decimals that rough mental math drops under pressure, on every conversion.