Aisha K.
Mar 12, 2026
Clean layout and the results update instantly. Exactly what I needed for a quick planning check.
Unit Converters
Fahrenheit to Celsius Converter (°F to °C)
Fahrenheit
Going the other way? Open the reverse converter
°F → °C
22.22 °C
98.6 °F → 37 °C. 350 °F baking → 176.7 °C. −40 °F is −40 °C (the crossover).
- You typed
- 72 °F
- How it’s calculated
- °C = (°F − 32) × 5/9.
Fahrenheit to Celsius conversion table
Common °F values in °C. Same factor as the converter above: °C = (°F − 32) × 5/9.
| Fahrenheit | Celsius |
|---|---|
| -10 °F | -23.33 °C |
| 0 °F | -17.78 °C |
| 0.25 °F | -17.64 °C |
| 0.5 °F | -17.5 °C |
| 1 °F | -17.22 °C |
| 2 °F | -16.67 °C |
| 5 °F | -15 °C |
| 10 °F | -12.22 °C |
| 20 °F | -6.67 °C |
| 25 °F | -3.89 °C |
| 32 °F | 0 °C |
| 37 °F | 2.78 °C |
Plain-English guide
Terms & how it works
Confused by a field? Read the short definitions here while you use the tool.
Fahrenheit
The “Fahrenheit” value used in this tool’s formula. Adjust it to see results update live.
°C = (°F − 32) × 5/9.
US thermostats still speak Fahrenheit. Science and most of the planet speak Celsius. Subtract 32, then multiply by 5/9. 72 °F indoors is 22.2 °C, not “22 unless you like arguing about hoodies.”
How this calculator works
US thermostats still speak Fahrenheit. Science and most of the planet speak Celsius. Subtract 32, then multiply by 5/9. 72 °F indoors is 22.2 °C, not “22 unless you like arguing about hoodies.” °C = (°F − 32) × 5/9. Scenario: 98.6 °F → 37 °C. 350 °F baking → 176.7 °C. −40 °F is −40 °C (the crossover).
°C = (°F − 32) × 5/9.
Scenario: 98.6 °F → 37 °C. 350 °F baking → 176.7 °C. −40 °F is −40 °C (the crossover).
When to use this Fahrenheit to Celsius
Common use cases
- US thermostats still speak Fahrenheit. Science and most of the planet speak Celsius. Subtract 32, then multiply by 5/9. 72 °F indoors is 22.2 °C, not “22 unless you like arguing about hoodies.”
- Sanity-check with this scenario: 98.6 °F → 37 °C. 350 °F baking → 176.7 °C. −40 °F is −40 °C (the crossover).
- The relationship is: °C = (°F − 32) × 5/9.
Localized examples
- Unit Converters: the example on this page uses the same formula as the widget.
What you get
- Fields: Fahrenheit
- °C = (°F − 32) × 5/9.
- Scenario on the page: 98.6 °F → 37 °C. 350 °F baking → 176.7 °C. −40 °F is −40 °C (the crossover).
How to Convert Fahrenheit to Celsius
- 1Enter Fahrenheit. Use the values you have, not a catalog average, unless that is all you know.
- 2°C = (°F − 32) × 5/9.
- 3Scenario: 98.6 °F → 37 °C. 350 °F baking → 176.7 °C. −40 °F is −40 °C (the crossover).
- 4Check which dictionary the other person is using — US or UK, decimal or 1,024 — then trust the number.
Governing formula
°C = (°F − 32) × 5/9.
98.6 °F → 37 °C. 350 °F baking → 176.7 °C. −40 °F is −40 °C (the crossover).
98.6 °F → 37 °C. 350 °F baking → 176.7 °C. −40 °F is −40 °C (the crossover).
Variable definitions
- value
Fahrenheit
The “Fahrenheit” field. Default 72; typical range -459.67–3000.
- The conversion (°C = (°F − 32) × 5/9.) does not pick US vs UK gallons, SI vs binary megabytes, or Mach at altitude for you. Read the footnote on the page.
- Nothing here is uploaded for the calculation itself.
Frequently Asked Questions
The two scales meet there. It is not a trick; it is algebra.
Related calculators
Unit Converters
- Celsius Heat Units to JoulesA Celsius heat unit is the heat to raise 1 pound of water by 1 °C — about 1,899 J. Old HVAC and process papers use CHU. If you expected BTU, you are on the Fahrenheit twin (1 lb × 1 °F). Do not mix them in a load calc.
- Celsius to FahrenheitWeather apps, ovens, and fever debates. Multiply °C by 9/5 and add 32. Room temperature 20 °C is 68 °F. Body temperature 37 °C is 98.6 °F. The “times two plus 30” trick is only for sidewalks.
- Celsius to RankineWhen a US customaries thermodynamics problem wants an absolute temperature but you measured Celsius: convert to kelvin, then × 9/5. 20 °C is 527.67 °R. Absolute zero is 0 °R on both sides of the ocean.
- Celsius to KelvinLabs and gas laws want kelvin because zero means zero motion, not “really cold in Celsius.” Add 273.15. You never write a degree sign on K. 25 °C room temp is 298.15 K.
- Fahrenheit to Gas MarkAn American 350 °F cake is UK Gas Mark 4. The mark scale jumps about 25 °F per number. Round to the nearest mark your knobs actually have. Pizza steel at 500 °F is past Mark 9 — just use the number.
- Fahrenheit to KelvinWhen a US weather number has to enter an ideal-gas problem: convert °F to °C in your head, then add 273.15 — or let this page do both. 68 °F is 293.15 K.
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Reviews & Ratings
See what others think about this tool, then leave your own rating to help improve CalculioHub.
4.8
out of 5.0
4 reviews
Daniel R.
Feb 28, 2026
Very usable on mobile. Would love a save/export option later, but the math feels solid.
Priya S.
Feb 3, 2026
The FAQ section answered my questions before I even had to search. Smooth dark mode too.
Marcus L.
Jan 19, 2026
Simple inputs, clear outputs. This replaced three bookmarks I used to juggle.
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