Fahrenheit to Celsius Converter
Convert Fahrenheit to Celsius for international weather comparisons, US recipes adapted to metric systems, and scientific work. The formula is (F - 32) x 5/9. Key references: 32F = 0C (freezing), 72F = 22.2C (comfortable room temperature), 350F = 176.7C (common baking temperature).
Last updated: June 2026
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Temperature context
See where this temperature sits on a real-world scale.
25°C is considered warm weather.
This visual guide compares freezing point, room temperature, body temperature and boiling point so the result makes sense immediately.
Converting Fahrenheit to Celsius
Use the input field for the source temperature, then read the converted value instantly in the target field. The preset buttons help with common real-world values like freezing point, room temperature, body temperature and boiling point.
Temperature reference: body, weather, and cooking
| Fahrenheit | Celsius | Typical meaning |
|---|---|---|
| 0°F | -17.8°C | Very cold winter day |
| 32°F | 0°C | Water freezes |
| 50°F | 10°C | Cool, light jacket |
| 68°F | 20°C | Room temperature |
| 90°F | 32.2°C | Hot summer day |
| 98.6°F | 37°C | Body temperature |
| 100.4°F | 38°C | Fever threshold |
| 212°F | 100°C | Water boils |
| 350°F | 176.7°C | Moderate oven (baking) |
| 425°F | 218.3°C | Hot oven (roasting) |
Where you need Fahrenheit to Celsius
Fahrenheit turns up whenever you are reading something American, and three cases cover most of it. US weather forecasts sound alarming until you convert them: a day "in the 90s" is about 32 to 35 C, not dangerous heat. US recipes and oven dials are in Fahrenheit, so a 350 F bake is 177 C and a 425 F roast is 218 C. And US medical thermometers read in Fahrenheit, where the common 100.4 F fever threshold is simply 38 C.
Because a Fahrenheit degree is smaller than a Celsius degree (1 C equals 1.8 F), Fahrenheit numbers are always the larger of the two. That is why a comfortable 21 C room reads as a much bigger-sounding 70 F, and why the two scales only meet at -40, where -40 F equals -40 C exactly.
US oven temperatures converted to Celsius
American recipes and appliance manuals use Fahrenheit exclusively. The table below covers the full range from low-and-slow cooking to high-heat searing, with the equivalent Celsius value and a UK gas mark for reference.
| Setting | Fahrenheit | Celsius | Gas mark | Typical use |
|---|---|---|---|---|
| Very low | 250°F | 121°C | 1/2 | Slow cooking, drying meringues |
| Low | 300°F | 149°C | 2 | Slow roasting, keeping warm |
| Moderate | 350°F | 177°C | 4 | Cakes, cookies, casseroles |
| Moderately hot | 375°F | 191°C | 5 | Roast chicken, quiche |
| Hot | 400°F | 204°C | 6 | Pizza, roasted vegetables |
| Very hot | 450°F | 232°C | 8 | Searing bread, high-heat roasting |
| Broil / Grill | 500°F+ | 260°C+ | 9+ | Browning, finishing dishes |
Frequently Asked Questions
What is the difference between Fahrenheit and Celsius?
Fahrenheit and Celsius are two different temperature scales. Celsius is used in most countries and science. Fahrenheit is mainly used in the United States. They measure the same thing but use different reference points.
When should I convert Fahrenheit to Celsius?
Convert when reading US recipes, weather reports, or old equipment that uses Fahrenheit, but you need the temperature in Celsius for your local context or scientific work.
Is there a quick way to estimate the conversion?
A rough estimate: subtract 32 from Fahrenheit, then divide by 1.8. For everyday use this gives a close enough answer, but use the converter for precise values.
What is 350°F in Celsius for baking?
350 °F is about 177 °C (176.7 °C). Other common US oven settings are 325 °F (163 °C), 375 °F (191 °C) and 400 °F (204 °C). Many ovens let you switch the dial between Fahrenheit and Celsius.
What temperature in Fahrenheit counts as a fever?
A reading of 100.4 °F (38 °C) or higher is generally treated as a fever, while normal body temperature is about 98.6 °F (37 °C). This is a reference figure, not medical advice.
How do I read a US weather forecast in Celsius?
Subtract 32 from the Fahrenheit value, then multiply by 5/9. A quicker mental estimate: subtract 30 and halve the result. So "high of 86°F" gives (86 - 30) / 2 = 28°C, close enough for daily use. Common US weather benchmarks: 32°F = 0°C (freezing), 50°F = 10°C (cool), 70°F = 21°C (comfortable), 90°F = 32°C (hot).
What is 400°F in Celsius for baking pizza?
400°F equals 204°C. Most home pizza recipes call for 400 to 450°F (204 to 232°C). A wood-fired pizzeria oven runs at 800 to 900°F (427 to 482°C), which is why home pizza takes longer and has a softer crust. For crispier results at home, pre-heat a baking stone or steel at the oven's maximum setting for at least 45 minutes.
What Fahrenheit temperatures matter for food safety?
US food safety guidelines (USDA) use Fahrenheit. Key thresholds: 40°F (4°C) is the maximum safe refrigerator temperature; 140°F (60°C) is the minimum safe hot-holding temperature for cooked food; 165°F (74°C) is the minimum internal temperature for poultry; 145°F (63°C) for whole cuts of pork, beef, veal and lamb. The "danger zone" where bacteria multiply fastest is between 40°F and 140°F (4°C and 60°C).