Convert Fahrenheit to Celsius (°F to °C) instantly with our accurate temperature conversion calculator. Supports Kelvin, step-by-step calculations, and a comprehensive temperature reference table.
Quick reference for commonly encountered temperatures in both Fahrenheit and Celsius scales.
| Description | Fahrenheit (°F) | Celsius (°C) | Kelvin (K) |
|---|---|---|---|
| Absolute Zero | -459.67 | -273.15 | 0 |
| Extreme Cold (Antarctica record) | -128.6 | -89.2 | 183.95 |
| Very Cold Day | -40 | -40 | 233.15 |
| Freezing Point of Water | 32 | 0 | 273.15 |
| Cold Day | 41 | 5 | 278.15 |
| Cool Day | 50 | 10 | 283.15 |
| Mild Day | 59 | 15 | 288.15 |
| Room Temperature | 68 | 20 | 293.15 |
| Warm Day | 77 | 25 | 298.15 |
| Hot Day | 86 | 30 | 303.15 |
| Body Temperature | 98.6 | 37 | 310.15 |
| Very Hot Day | 104 | 40 | 313.15 |
| Boiling Point of Water | 212 | 100 | 373.15 |
| Oven Temperature (common) | 350 | 176.67 | 449.82 |
| Oven Temperature (high) | 400 | 204.44 | 477.59 |
| Oven Temperature (max) | 450 | 232.22 | 505.37 |
Water freezes at 32°F (0°C, 273.15K). This is the standard reference point for temperature scales and is used to calibrate thermometers.
Typical room temperature is around 68-72°F (20-22°C, 293-295K). This range is considered comfortable for most indoor activities.
Normal human body temperature is 98.6°F (37°C, 310.15K). A fever is generally considered to be 100.4°F (38°C) or higher.
Water boils at 212°F (100°C, 373.15K) at sea level. The boiling point decreases at higher altitudes due to lower atmospheric pressure.
All temperature conversion formulas used by this calculator, with explanations.
Example: Convert 212°F to Celsius
°C = (212 - 32) × 5/9 = 180 × 5/9 = 100°C
Example: Convert 100°C to Fahrenheit
°F = (100 × 9/5) + 32 = 180 + 32 = 212°F
Example: Convert 100°C to Kelvin
K = 100 + 273.15 = 373.15K
Example: Convert 373.15K to Celsius
°C = 373.15 - 273.15 = 100°C
Example: Convert 212°F to Kelvin
K = (212 - 32) × 5/9 + 273.15 = 180 × 5/9 + 273.15 = 373.15K
Example: Convert 373.15K to Fahrenheit
°F = (373.15 - 273.15) × 9/5 + 32 = 100 × 9/5 + 32 = 212°F
For the most accurate conversions, use the exact temperature value rather than rounded numbers. Rounding before converting can introduce errors in the final result. This calculator preserves precision through all steps.
When converting negative temperatures, be careful with the signs. The formula (°F - 32) still applies — negative values will become more negative before being scaled. At -40°, both Fahrenheit and Celsius scales read the same value.
The Fahrenheit scale has 180 degrees between freezing and boiling (32°F to 212°F), while Celsius has 100 degrees (0°C to 100°C). This is why the conversion factor is 180/100 = 9/5 = 1.8. A change of 1°C equals a change of 1.8°F.
Kelvin is an absolute temperature scale where 0K represents absolute zero — the point at which all molecular motion stops. Unlike °F and °C, Kelvin values are never negative. The Kelvin scale uses the same degree size as Celsius, making conversion simple (add or subtract 273.15).
For scientific applications, use at least 2 decimal places. The Kelvin scale is preferred in scientific contexts because it's an absolute scale. This calculator supports up to 8 decimal places for high-precision requirements.
Most countries use Celsius for everyday measurements. The US, Bahamas, Cayman Islands, and a few others use Fahrenheit. Scientists and engineers worldwide use Kelvin for absolute temperature measurements and calculations.
Explore our other temperature conversion calculators.
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The Fahrenheit scale was developed by Daniel Gabriel Fahrenheit in 1724. On this scale, the freezing point of water is 32°F and the boiling point is 212°F at standard atmospheric pressure. The scale was originally based on three fixed points: 0°F (the freezing point of a brine solution), 32°F (freezing point of water), and 96°F (approximate human body temperature). Today, Fahrenheit is primarily used in the United States and its territories, as well as in the Bahamas, Belize, the Cayman Islands, and Palau.
The Celsius scale, also known as the centigrade scale, was developed by Swedish astronomer Anders Celsius in 1742. It sets 0°C as the freezing point of water and 100°C as the boiling point at standard atmospheric pressure. Celsius is part of the metric system and is used by most countries around the world for everyday temperature measurements, as well as by the scientific community in most contexts. The scale is intuitive because it divides the temperature range between freezing and boiling into 100 equal parts.
The Kelvin scale is an absolute thermodynamic temperature scale developed by Lord Kelvin (William Thomson) in 1848. It starts at absolute zero (0K), the theoretical temperature at which all molecular motion ceases. The Kelvin scale uses the same increment size as the Celsius scale (a change of 1K equals a change of 1°C), making conversion between the two simple. Kelvin is the standard unit for scientific temperature measurements and is used extensively in physics, chemistry, and engineering.
Best for everyday weather reporting, cooking temperatures, and household thermometers in the United States. Fahrenheit provides finer granularity (1°F is smaller than 1°C), which some find more precise for describing weather conditions.
The standard for most of the world's weather reporting, medical thermometers, cooking (outside the US), and general science education. Its 0-100 scale for water's phase changes makes it intuitive for everyday use.
Essential for scientific research, thermodynamics, cryogenics, astronomy, and any calculation involving gas laws or absolute temperature. Because it starts at absolute zero, Kelvin enables proportional calculations that aren't possible with Fahrenheit or Celsius.
Our Fahrenheit to Celsius Converter is a comprehensive temperature conversion tool designed for students, travelers, cooks, scientists, and anyone who needs to convert between temperature scales. Whether you're following a recipe from a US source that uses Fahrenheit, checking weather forecasts while traveling abroad, or doing scientific calculations, this tool provides instant, accurate conversions between Fahrenheit, Celsius, and Kelvin.
Convert between Fahrenheit, Celsius, and Kelvin all in one tool. See all three values simultaneously in the temperature display, making cross-referencing effortless.
Learn how the conversion works with our detailed step-by-step calculation display. Perfect for students studying temperature scales or anyone wanting to understand the math behind the conversion.
Our common temperatures table includes 15 reference points from absolute zero to high oven temperatures, all displayed in Fahrenheit, Celsius, and Kelvin for quick lookup.
Choose from 0 to 8 decimal places to match your precision needs — from quick everyday estimates to detailed scientific calculations requiring high accuracy.
All calculations are performed locally in your browser. No personal information is stored, transmitted, or shared with any third parties.
Complete access to all features with no registration, no hidden fees, and no usage limits. Use it as often as you need, completely free.
Important Disclaimer: This Fahrenheit to Celsius Converter provides accurate temperature conversions using the standard mathematical formulas. While the calculations are mathematically exact (to within floating-point precision), always verify critical temperature measurements (such as cooking temperatures, medical readings, or scientific experiments) with properly calibrated equipment. This tool is for informational and educational purposes only.