Fahrenheit to Celsius Converter
Convert between various measurement units instantly.
1 f = -1.7222e+1 c
Reference Table
Conversion Results
Conversion Formula
Quick Reference Table
| Fahrenheit | Celsius |
|---|---|
| 1 f | -17.2222 c |
| 5 f | -15 c |
| 10 f | -12.2222 c |
| 50 f | 10 c |
| 100 f | 37.7778 c |
| 500 f | 260 c |
| 1,000 f | 537.778 c |
About These Units
Need to turn Fahrenheit into Celsius? The relationship is fixed: every Fahrenheit is worth -17.2222 Celsius, so 10 Fahrenheit lands at -172.222 Celsius. Type any number into the tool above and the answer updates as you go — the formula and quick table below show the full picture.
Fahrenheit and Celsius measure the same physical quantity but belong to different scales, so moving a figure from Fahrenheit into Celsius — or back again — is a routine step whenever specifications, prices, or measurements cross between the two systems.
About Fahrenheit
Fahrenheit (°F) is a temperature scale where water freezes at 32°F and boils at 212°F.
Created by German physicist Daniel Fahrenheit in 1724, based on brine freezing point and human body temperature.
About Celsius
Celsius (°C) is a temperature scale where 0°C is the freezing point of water and 100°C is its boiling point at standard pressure.
Devised by Swedish astronomer Anders Celsius in 1742, who initially set 0 and 100 in reverse — flipped to current form after his death.
When Conversion Is Needed
Fahrenheit and Celsius belong to different measurement systems, so conversion becomes necessary when comparing values across the two units, or when forwarding a document or specification written in one unit to someone who uses the other. The quick-reference table on this page shows how common values in Fahrenheit translate to Celsius, so memorizing or bookmarking the most frequently-used values is often a worthwhile shortcut.
Real-World Examples
Here is how familiar values in Fahrenheit translate into Celsius.
- water freezing32 f = 0 c
- human body temperature98.6 f = 37 c
- water boiling212 f = 100 c
Real-World Use Cases
Understanding where Fahrenheit and Celsius each show up in daily life makes the conversion between them far more intuitive.
Where Fahrenheit is used
Used in everyday US life — weather forecasts, oven temperatures, body temperature (98.6°F is normal).
Where Celsius is used
Used worldwide except in the US, including weather forecasts, cooking, and scientific work.
Related Converters
Frequently Asked Questions
What is the formula for Fahrenheit to Celsius?
Celsius = Fahrenheit × -17.2222. Plugging in 10 gives 10 × -17.2222 = -172.222 Celsius. This page runs that calculation live so you never have to do it by hand.
What does one Fahrenheit equal in Celsius?
Exactly -17.2222 Celsius. Flip the direction and a single Celsius comes to -0.05806 Fahrenheit.
Can I trust these Fahrenheit-to-Celsius results?
Absolutely. Every figure is computed with 64-bit precision using the standard, internationally agreed conversion factor — accurate enough for lab work, trade, and everyday tasks.
Detailed Guide to Fahrenheit to Celsius Converter
Convert between various measurement units instantly.
Key Benefits
- ✓Instant Fahrenheit-to-Celsius conversion as you type — no button to press
- ✓Exact factor built in: 1 Fahrenheit = -17.2222 Celsius (and 1 Celsius = -0.05806 Fahrenheit)
- ✓Bi-directional: swap Fahrenheit and Celsius in one click
- ✓Quick-reference table for common Fahrenheit values
- ✓100% free, runs in your browser — no signup, no limits
Frequently Asked Questions
How many Celsius are in one Fahrenheit?
One Fahrenheit equals -17.2222 Celsius. To go the other way, one Celsius is -0.05806 Fahrenheit. The calculator applies this factor automatically for any value you enter.
Is this Fahrenheit-to-Celsius converter accurate?
Yes. It uses IEEE 754 double-precision math with internationally accepted constants, so results are exact to display precision — no rounding surprises.
Disclaimer: This tool is provided for informational purposes only.
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