🌡️ Fahrenheit to Celsius Converter
Free online tool to convert Fahrenheit (°F) to Celsius (°C). Enter a value and get instant, accurate results.
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Fahrenheit to Celsius Conversion Table
| Fahrenheit (°F) | Celsius (°C) |
|---|---|
| 0 °F | -17.777778 °C |
| 20 °F | -6.6666667 °C |
| 37 °F | 2.7777778 °C |
| 70 °F | 21.111111 °C |
| 100 °F | 37.777778 °C |
| 200 °F | 93.333333 °C |
Conversion Formula
Celsius → Fahrenheit: °F = (°C × 9/5) + 32 Fahrenheit → Celsius: °C = (°F − 32) × 5/9 Celsius → Kelvin: K = °C + 273.15 Kelvin → Celsius: °C = K − 273.15
About Fahrenheit to Celsius Conversions
Need to convert Fahrenheit to Celsius? This free tool handles the formula automatically. Enter your °F value and get the °C equivalent right away.
This conversion uses a non-linear (reciprocal) relationship, so a simple multiplication factor does not apply. The formula section below explains the method, and the reference table shows common converted values.
This page includes a reference table of common Fahrenheit values pre-converted to Celsius, the conversion formula, and frequently asked questions. All values use internationally recognized conversion standards.
Frequently Asked Questions
What is 100 degrees Fahrenheit in Celsius?
100°F = 37.8°C. The calculation: (100 − 32) × 5/9 = 68 × 5/9 = 37.8. This is just above normal body temperature — a 100°F summer day is genuinely hot.
What is 400°F in Celsius for oven temperatures?
400°F = 204°C, which rounds to the 200°C setting on metric ovens (UK gas mark 6). Other common oven anchors: 325°F ≈ 160°C, 375°F ≈ 190°C, 450°F ≈ 230°C.
At what Fahrenheit temperature does water boil?
Water boils at 212°F (100°C) at sea level. The boiling point drops about 1°F for every 500 feet of elevation — in Denver (5,280 ft), water boils at roughly 202°F (94.4°C), which affects cooking times.
Is 75 degrees Fahrenheit warm?
75°F equals 23.9°C — pleasantly warm, at the upper end of typical indoor comfort. Most thermostats are set between 68–75°F (20–24°C).
Why does the United States still use Fahrenheit?
The US never completed metrication after the voluntary 1975 Metric Conversion Act, and Fahrenheit remained the convention in weather reporting, cooking, and home thermostats. Proponents note its finer granularity for weather — one Fahrenheit degree is 5/9 the size of a Celsius degree.
Related Temperature Conversions
Reference Charts
Celsius to Fahrenheit Conversion Chart
Complete reference chart converting Celsius (°C) to Fahrenheit (°F). Covers −40°C to 300°C including key reference temperatures.
Fahrenheit to Celsius Conversion Chart
Complete reference chart converting Fahrenheit (°F) to Celsius (°C). Covers −40°F to 500°F including key everyday reference temperatures.
Celsius to Kelvin Conversion Chart
Reference chart converting Celsius (°C) to Kelvin (K). Covers temperatures from absolute zero to common scientific and industrial values.
Related Guides
Why America Uses Fahrenheit
The United States kept Fahrenheit while most of the world switched to Celsius. Learn the history behind the Fahrenheit scale, why metric adoption failed in the US, and what that means for temperature conversion today.
5 min read
How to Convert Celsius to Fahrenheit
To convert Celsius to Fahrenheit, multiply by 9/5 and add 32. Learn the exact formula, a fast mental shortcut, a reference table, and common worked examples.
5 min read
All conversion results are provided for general informational purposes only. Our formulas use internationally recognized conversion factors; however, rounding may affect precision. Do not rely on these results for professional, medical, legal, or engineering decisions without independent verification. Read our full disclaimer.