Temperature conversion
Fahrenheit to Celsius (°F to °C)
Read a Fahrenheit oven setting or thermometer value in Celsius. Subtract 32 before applying the scale factor; subtracting afterwards gives a different result.
Convert Fahrenheit to Celsius using C = (F − 32) × 5/9.
An oven setting of 350 °F
- Starting measurement
- 350 °F
- Converted value (rounded if needed)
- 176.667 °C
The result may fall between the markings on an oven dial. Follow the recipe’s appliance guidance when choosing a setting; this is not a fan-oven adjustment.
Fahrenheit to Celsius conversion chart
| Fahrenheit | Celsius |
|---|---|
| -40 °F | -40 °C |
| 0 °F | -17.7778 °C |
| 20 °F | -6.6667 °C |
| 32 °F | 0 °C |
| 40 °F | 4.4444 °C |
| 50 °F | 10 °C |
| 60 °F | 15.5556 °C |
| 70 °F | 21.1111 °C |
| 80 °F | 26.6667 °C |
| 90 °F | 32.2222 °C |
| 98.6 °F | 37 °C |
| 100 °F | 37.7778 °C |
| 200 °F | 93.3333 °C |
| 350 °F | 176.667 °C |
How to convert by hand
Formula for a temperature reading
C = (F − 32) × 5/9
- Start with the reading in Fahrenheit and apply the formula in the order shown.
- Keep the offset exactly as written. It changes the zero point of the scale.
- Round the result to suit your measurement, after completing the calculation.
Related conversions
About Fahrenheit and Celsius
These pages convert temperature readings. A temperature change is a different calculation: offsets cancel when comparing two readings. Celsius and kelvin have equal-sized steps; Fahrenheit steps are smaller.
Fahrenheit
US customaryWater freezes near 32 °F and boils near 212 °F at standard atmospheric pressure, a span of 180 degrees. Converting a reading to Celsius needs both a scale change and a zero-point adjustment.
Commonly used for: US weather forecasts, oven settings and thermometers.
Celsius
Metric (SI derived)A Celsius reading is the kelvin reading minus 273.15. Water freezes near 0 °C and boils near 100 °C at standard atmospheric pressure; these are useful reference points rather than the scale’s definition.
Commonly used for: Weather forecasts, oven settings and thermometer readings.
Questions
Does the converter also adjust cooking time?
No. It expresses the same temperature in Celsius. Cooking time and any fan-oven adjustment depend on the recipe and appliance, and are not calculated here.
How do I convert Celsius back to Fahrenheit?
Use our Celsius to Fahrenheit converter, which applies the inverse formula.
Why might the chart and calculator show different decimal places?
The chart uses a compact rounded display. The editable calculator can show up to six decimal places and uses the factors or temperature formulas stored in the library. More displayed digits do not make the original measurement more precise.
Precision and source
The calculator uses stored conversion factors and temperature formulas, then rounds the result for display. A short decimal in a chart is not a claim of exactness. For a calculation with several steps, keep as much precision as the original measurement supports and round at the end.
Reference: NIST SP 811 conversion factors. Its alphabetical tables distinguish unit variants and temperature readings from intervals. Published by ToolsNow. Report a conversion problem.
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