Fahrenheit to Celsius Calculator: Fast & Accurate
Convert Fahrenheit to Celsius instantly for recipes, science, and weather. Just enter the value for immediate results.
Ultimate Temperature ConverterThe quick answer for 1 Fahrenheit — type any value below for the exact result
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Celsius
Fahrenheit to Celsius Conversion Formula
Fahrenheit and Celsius Explained
Fahrenheit (f)
Fahrenheit (symbol °F) is the temperature scale of everyday American life. Water freezes at 32° and boils at 212°, with exactly 180 degrees spanning the interval, and its zero was set at the freezing point of a salt-brine mixture — the coldest reference its inventor could reproduce reliably. One Fahrenheit degree equals five-ninths of a Celsius degree, so the scale takes smaller steps: 0° signals dangerous cold, 70° reads as comfort, and 100° marks an extreme heat day.
Where it is used: Weather reports, ovens, thermostats, and medical thermometers in the United States and a handful of territories; older equipment worldwide may still carry dual markings.
Origin: Daniel Gabriel Fahrenheit, a Polish-born instrument maker working in the Netherlands, published the scale in 1724 alongside the first reliable mercury thermometers.
Celsius (c)
The Celsius scale (symbol °C) is the metric standard for temperature, assigning 0° to the freezing point of water and 100° to its boiling point at standard atmospheric pressure. Each degree is exactly one kelvin wide, which lets scientists move between everyday and absolute scales with a single addition. The round hundred-degree span makes intuitive sense of weather: -10° is harsh winter, 20° a comfortable afternoon, and 40° a dangerous heat wave — the reference frame used by most of the planet.
Where it is used: Daily temperatures everywhere outside the US: forecasts, kitchens, hospitals, and schools, plus scientific work as the companion scale to kelvin.
Origin: Anders Celsius, a Swedish astronomer, created the scale in 1742; his original version ran boiling-to-freezing and was inverted to the familiar direction after his death.
Fahrenheit to Celsius Conversion Table
| Fahrenheit (f) | Celsius (c) |
|---|---|
| -40 f | -40 c |
| -20 f | -28.8888888889 c |
| 0 f | -17.7777777778 c |
| 20 f | -6.6666666667 c |
| 32 f | 0 c |
| 40 f | 4.4444444444 c |
| 50 f | 10 c |
| 68 f | 20 c |
| 70 f | 21.1111111111 c |
| 80 f | 26.6666666667 c |
| 90 f | 32.2222222222 c |
| 98.6 f | 37 c |
| 100 f | 37.7777777778 c |
| 120 f | 48.8888888889 c |
| 150 f | 65.5555555556 c |
| 200 f | 93.3333333333 c |
| 250 f | 121.1111111111 c |
| 350 f | 176.6666666667 c |
| 450 f | 232.2222222222 c |
Celsius to Fahrenheit Conversion Table
| Celsius (c) | Fahrenheit (f) |
|---|---|
| -40 c | -40 f |
| -20 c | -4 f |
| -10 c | 14 f |
| 0 c | 32 f |
| 10 c | 50 f |
| 20 c | 68 f |
| 25 c | 77 f |
| 30 c | 86 f |
| 37 c | 98.6 f |
| 50 c | 122 f |
| 100 c | 212 f |
| 150 c | 302 f |
| 180 c | 356 f |
| 200 c | 392 f |
Fahrenheit to Celsius in Everyday Objects
Common real-world examples that make Fahrenheit and Celsius easy to picture at a glance.
| Fahrenheit (f) | Celsius (c) | |
|---|---|---|
| Freezing point of water | 32 f | 0 c |
| Fridge food-safety limit | 40 f | 4.4444444444 c |
| Ideal office temperature | 68 f | 20 c |
| Scald-risk water heater max | 120 f | 48.8888888889 c |
| Slow-cooker simmer | 180 f | 82.2222222222 c |
| Boiling point at sea level | 212 f | 100 c |
| Midwest cold snap | -20 f | -28.8888888889 c |
| Paper ignition point | 451 f | 232.7777777778 c |
When You Need Fahrenheit to Celsius Conversions
Setting HVAC and pool equipment abroad
US-made thermostats default to 78°F (25.56°C) for cooling and pool heaters to 82°F (27.78°C); converting the dials keeps a metric household comfortable without guesswork.
Translating US meat-temperature guides
The USDA says poultry is safe at 165°F (73.89°C) and steak hits medium-rare at 135°F (57.22°C) — numbers a Celsius kitchen needs converted before dinner.
Understanding US weather extremes
Record readings like Death Valley's 134°F (56.67°C) and Antarctica's -128.6°F (-89.22°C) only land with their metric equivalents, where they sit far beyond any Celsius forecast.
Baby bath and formula safety
Pediatric guidance calls bath water about 100°F (37.78°C) and warns that tap water above 120°F (48.89°C) scalds in seconds — checks a parent with a Celsius thermometer must convert.
Related Temperature Conversions
How to Use
-
1
Enter the Fahrenheit Value
Type the temperature in Fahrenheit — for example, enter 98.6 for normal body temperature
-
2
See the Celsius Result
The equivalent in Celsius appears instantly: 98.6°F = 37°C — the standard medical baseline
-
3
Copy or Swap
Copy the result or click Swap to convert from Celsius back to Fahrenheit
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4
Check the Reference Table
Browse the table for common values like 212°F = 100°C (boiling water for tea or pasta)
Why Use Be Converter?
Instant Temperature Conversion
Get precise Fahrenheit to Celsius results in real-time as you type — no formula to remember
Formula-Perfect Accuracy
Uses the standard formula C = (F - 32) × 5/9 for scientifically accurate temperature conversions
Temperature Reference Table
Common temperatures at a glance — from -40°F to 450°F — covering weather and cooking ranges
Swap with One Click
Toggle between Fahrenheit and Celsius instantly — perfect when reading US recipes abroad
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Frequently Asked Questions
What is the formula to convert Fahrenheit to Celsius?
What is 350°F in Celsius for baking?
How do I quickly estimate Fahrenheit to Celsius?
What is 32 degrees Fahrenheit in Celsius?
At what temperature are Fahrenheit and Celsius the same?
What is 100°F in Celsius?
What is -459.67°F in Celsius?
What is 0°F in Celsius?
About Fahrenheit to Celsius Converter
Our free online Fahrenheit to Celsius converter provides instant, accurate temperature conversions for any application. Whether you are checking the weather for your trip to Canada, following a scientific protocol, or checking the thermostat in your office, this tool delivers precise results. The Fahrenheit scale, proposed by Daniel Gabriel Fahrenheit in 1724, sets water freezing at 32° and boiling at 212°, while the Celsius scale uses the more intuitive 0° and 100° reference points used globally.
Expert Tips for Fahrenheit to Celsius Conversion
The exact formula is C = (F - 32) × 5/9. You can also use C = (F - 32) ÷ 1.8 — both are mathematically identical and produce the same result.
For cooking: 350°F is your go-to for cakes (175°C), 400°F for roasting chicken (200°C), and 450°F for pizza (230°C).
Key reference points: -40°F = -40°C (equal point), 32°F = 0°C (freezing), 98.6°F = 37°C (body temp), 212°F = 100°C (boiling).
When comparing US weather to metric: 68°F is 20°C (perfect room temp), 100°F is 38°C (a scorching summer day in Phoenix).
In medical settings, always use the exact formula. A fever of 103°F is 39.4°C — small rounding errors in fever assessment can affect treatment decisions.