Fahrenheit to Celsius Converter
محوّل درجة الحرارة المجاني, حوّل السلسيوس والفهرنهايت والكلفن مع الصيغ
Fahrenheit
- Symbol
- °F
- System
- Metric/Imperial
- Dimension
- Various
Celsius
- Symbol
- °C
- System
- Metric/Imperial
- Dimension
- Various
Quick Reference Table
| Fahrenheit | Celsius | Celsius | Fahrenheit |
|---|---|---|---|
| 1 | -17.2222222222 | 1 | 33.8 |
| 2 | -16.6666666667 | 2 | 35.6 |
| 3 | -16.1111111111 | 3 | 37.4 |
| 5 | -15 | 5 | 41 |
| 10 | -12.2222222222 | 10 | 50 |
| 25 | -3.8888888889 | 25 | 77 |
| 50 | 10 | 50 | 122 |
| 100 | 37.7777777778 | 100 | 212 |
| 500 | 260 | 500 | 932 |
| 1000 | 537.7777777778 | 1000 | 1832 |
Conversion Formula
Celsius = Fahrenheit × -17.2222222222
Fahrenheit = Celsius × 33.8
Factors are from BIPM SI brochure and NIST SP 811, stored unrounded and computed via a base unit. Reverse factor is 1 ÷ -17.2222222222.
How to convert Fahrenheit to Celsius
Multiply the value in fahrenheit by -17.2222222222 to get celsius. For example, 5 Fahrenheit = -15 Celsius. All results in the درجة الحرارة converter update instantly as you type, so you can see every unit at once without manual math.
Common mistakes
Do not round the factor to -17. too early — keep full precision until the final display. For درجة الحرارة, always verify critical calculations (medicine, engineering) with a second source.
FAQ
- How many Celsius in 1 Fahrenheit?
- 1 Fahrenheit = -17.2222222222 Celsius.
- How many Fahrenheit in 1 Celsius?
- 1 Celsius = 33.8 Fahrenheit.
- What is the source?
- BIPM/NIST via OmniConverter base-unit engine. Source table and formula above are exact.
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