Fahrenheit to Celsius Converter

How to use this calculator

1. Enter the Fahrenheit temperature you want to convert—this can be a positive or negative number and may include decimals.
2. We subtract 32 from the °F value and multiply by 5/9 to calculate the Celsius equivalent.
3. Review the result in °C and use it for weather, cooking, lab notes, or HVAC settings.
4. If needed, round or format the Celsius value based on how precise your use case requires (for example, 1 decimal place for weather, more for lab work).

Inputs explained

Fahrenheit (°F)

Temperature in degrees Fahrenheit. You can enter whole numbers or decimals (such as 72.5°F) and use negative values for sub‑freezing temperatures.

When to use it

• Understanding international weather reports or forecasts that list temperatures in Celsius when your local station uses Fahrenheit.
• Converting oven temperatures from US recipes (in °F) to match a Celsius‑only oven or appliance.
• Handling science and engineering problems that require Celsius inputs when your instruments or references are in Fahrenheit.
• Helping students and travelers build intuition about what different Celsius temperatures feel like in familiar Fahrenheit terms, and vice versa.

Tips & cautions

• For quick mental checks, remember the rough rule of thumb: (°F − 30) ÷ 2 ≈ °C—use this to sanity‑check calculator results.
• High‑heat cooking and everyday weather usually tolerate small rounding differences; scientific work may require more decimal places.
• Always double‑check unit labels on equipment and charts—mixing up °F and °C can lead to big errors in lab or HVAC settings.
• If you need Kelvin, convert °F to °C here, then add 273.15 to the Celsius result to get Kelvin.
• Results are shown with standard rounding; you may need additional precision for tight laboratory or industrial tolerances.
• Does not convert directly to Kelvin; you must use an additional step (°C + 273.15) for absolute temperatures.
• Accuracy is limited by the precision and calibration of your original Fahrenheit measurement source.

Worked examples

Deep dive

FAQs

Does it work for oven temps?

Yes. Enter any Fahrenheit value—including high oven temps—and we’ll convert it.

How accurate is the rounding?

We round to two decimals on screen. Add more precision manually if required.

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