18 °F to °C
18 degrees Fahrenheit in degrees Celsius
18 °F = -7.777778 °C
°C = (°F − 32) × 5/9
18 degrees Fahrenheit is -7.777778 degrees Celsius. To get there, use °C = (°F − 32) × 5/9.
Values either side
| Degrees Fahrenheit | Degrees Celsius |
|---|---|
| 14 °F | -10 |
| 15 °F | -9.444444 |
| 16 °F | -8.888889 |
| 17 °F | -8.333333 |
| 18 °F ← | -7.777778 |
| 19 °F | -7.222222 |
| 20 °F | -6.666667 |
| 21 °F | -6.111111 |
| 22 °F | -5.555556 |
How the conversion works
The relationship is °C = (°F − 32) × 5/9. Both units measure temperature, so the conversion is a fixed formula that never changes. Temperature scales are the one common case where converting is not just multiplication — Celsius and Fahrenheit each put their zero in a different place, so an offset is applied as well as a scale factor.
Common questions
- What is 18 °F in degrees Celsius?
- 18 °F is -7.777778 °C.
- How do you convert degrees Fahrenheit to degrees Celsius?
- Use °C = (°F − 32) × 5/9.
Related pages
- Degrees Fahrenheit to degrees Celsius Full table and converter
- 18 °C to °F The other direction
- 14 °F to °C -10 °C
- 15 °F to °C -9.444444 °C
- 16 °F to °C -8.888889 °C
- 17 °F to °C -8.333333 °C
- 19 °F to °C -7.222222 °C
- 20 °F to °C -6.666667 °C
- 21 °F to °C -6.111111 °C
- 22 °F to °C -5.555556 °C
Sources
- Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
- Calculated on this page — At One Place