Fahrenheit to Celsius Converter (°F to °C)
Convert Fahrenheit to Celsius (°F to °C). See results in Celsius, Kelvin, and Rankine. Includes a quick reference table with weather, body temp, and oven temperatures.
TEMPERATURE IN CELSIUS
22.22 °C
KELVIN
295.37 K
RANKINE
531.67 °R
FREEZING?
☀️ No
FORMULA
(72−32)×⅝
Fahrenheit to Celsius — Quick Reference
| °F | °C | K | Context |
|---|---|---|---|
| -40°F | -40.0°C | 233.1 K | F = C crossover |
| 0°F | -17.8°C | 255.4 K | Very cold winter |
| 32°F | 0.0°C | 273.1 K | Water freezes |
| 50°F | 10.0°C | 283.1 K | Cool fall day |
| 68°F | 20.0°C | 293.1 K | Room temp (low) |
| 72°F | 22.2°C | 295.4 K | Room temp (ideal) |
| 77°F | 25.0°C | 298.1 K | Warm day |
| 98.6°F | 37.0°C | 310.1 K | Body temperature |
| 100°F | 37.8°C | 310.9 K | Hot summer day |
| 120°F | 48.9°C | 322.0 K | Extreme heat |
| 212°F | 100.0°C | 373.1 K | Water boils |
| 350°F | 176.7°C | 449.8 K | Oven (baking) |
| 400°F | 204.4°C | 477.6 K | Oven (roasting) |
| 450°F | 232.2°C | 505.4 K | Oven (pizza) |
How to Convert Fahrenheit to Celsius
Subtract 32 from the Fahrenheit temperature, then multiply by 5/9:
Example: 72°F (room temperature)
= (72 − 32) × 5/9 = 40 × 0.5556 = 22.22°C
Example: 98.6°F (body temperature)
= (98.6 − 32) × 5/9 = 66.6 × 0.5556 = 37.00°C
Example: 350°F (oven for baking)
= (350 − 32) × 5/9 = 318 × 0.5556 = 176.67°C
Mental math shortcut: Subtract 30, then divide by 2. Example: 72°F → (72−30)/2 = 21°C (actual: 22.2°C). Close enough for everyday use!
Fahrenheit to Celsius — Conversion Chart
| °F | °C | Kelvin | What It Means |
|---|---|---|---|
| -40°F | -40°C | 233.15 K | F = C crossover point |
| 0°F | -17.8°C | 255.4 K | Very cold winter day |
| 32°F | 0°C | 273.15 K | Water freezes |
| 50°F | 10°C | 283.2 K | Cool autumn day |
| 68°F | 20°C | 293.2 K | Room temperature (low) |
| 72°F | 22.2°C | 295.4 K | Ideal room temperature |
| 77°F | 25°C | 298.2 K | Warm comfortable day |
| 98.6°F | 37°C | 310.2 K | Normal body temperature |
| 100°F | 37.8°C | 310.9 K | Hot summer day / low fever |
| 212°F | 100°C | 373.15 K | Water boils |
| 350°F | 176.7°C | 449.8 K | Oven: baking |
| 400°F | 204.4°C | 477.6 K | Oven: roasting |
| 450°F | 232.2°C | 505.4 K | Oven: pizza |
| 500°F | 260°C | 533.2 K | Oven: maximum |
US Weather Temperature Guide
| °F Range | °C Range | Conditions | What to Wear |
|---|---|---|---|
| Below 0°F | Below -18°C | Dangerously cold | Full winter gear, limit exposure |
| 0–20°F | -18 to -7°C | Bitter cold | Heavy coat, hat, gloves, layers |
| 20–32°F | -7 to 0°C | Freezing | Winter coat, potentially snow |
| 32–50°F | 0 to 10°C | Cold | Jacket, long sleeves |
| 50–65°F | 10 to 18°C | Cool | Light jacket or sweater |
| 65–75°F | 18 to 24°C | Comfortable | T-shirt, light layers |
| 75–85°F | 24 to 29°C | Warm | Shorts, t-shirt, sunscreen |
| 85–100°F | 29 to 38°C | Hot | Light clothing, stay hydrated |
| Above 100°F | Above 38°C | Dangerous heat | Stay indoors, AC, water |
US Oven Temperatures
| Setting | °F | °C | Used For |
|---|---|---|---|
| Warm | 200°F | 93°C | Keeping food warm |
| Low | 250°F | 121°C | Slow cooking, dehydrating |
| Moderate | 325–350°F | 163–177°C | Cakes, cookies, casseroles |
| Hot | 375–400°F | 191–204°C | Roasting chicken, pastries |
| Very hot | 425–450°F | 218–232°C | Pizza, bread, searing |
| Broil | 500–550°F | 260–288°C | Broiling, charring |
Body Temperature Guide
| Reading | °F | °C | Meaning |
|---|---|---|---|
| Hypothermia | Below 95°F | Below 35°C | ⚠️ Seek medical attention |
| Normal (low) | 97.0°F | 36.1°C | Healthy range |
| Normal (average) | 98.6°F | 37.0°C | Standard body temp |
| Low-grade fever | 99.1–100.4°F | 37.3–38°C | Monitor, rest |
| Fever | 100.4–103°F | 38–39.4°C | Contact doctor if persistent |
| High fever | Above 103°F | Above 39.4°C | ⚠️ Seek immediate medical care |
What Is Fahrenheit?
Fahrenheit (°F) is a temperature scale developed by Daniel Gabriel Fahrenheit in 1724. Water freezes at 32°F and boils at 212°F (a 180-degree range). The US, Bahamas, Cayman Islands, Palau, and the Federated States of Micronesia are the only countries that primarily use Fahrenheit.
What Is Celsius?
Celsius (°C), also called centigrade, is a temperature scale based on water: 0°C = freezing point, 100°C = boiling point. It is the standard temperature scale used by every country except the US and a handful of territories. All scientific work worldwide uses Celsius (or Kelvin).