Convert Celsius to Fahrenheit
1 °C = 33.8 °F · 1 °F = -17.2222 °C · Exact by definition
1 °C = 33.8 °F
The same value in other units
- kelvin
- 274.15 K
Settings
Digits kept in the answer. Automatic keeps six, which hides floating-point noise without losing anything real.
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Paste one conversion per line, written the way you would say it: "5 km to mi". Handy for a column copied out of a spreadsheet.
Temperature
Celsius to Fahrenheit: conversion table
| degree Celsius | degree Fahrenheit |
|---|---|
| -40 °C | -40 °F |
| -20 °C | -4 °F |
| -10 °C | 14 °F |
| 0 °C | 32 °F |
| 10 °C | 50 °F |
| 20 °C | 68 °F |
| 25 °C | 77 °F |
| 30 °C | 86 °F |
| 37 °C | 98.6 °F |
| 50 °C | 122 °F |
| 100 °C | 212 °F |
| degree Fahrenheit | degree Celsius |
|---|---|
| -40 °F | -40 °C |
| -20 °F | -28.8889 °C |
| -10 °F | -23.3333 °C |
| 0 °F | -17.7778 °C |
| 10 °F | -12.2222 °C |
| 20 °F | -6.66667 °C |
| 25 °F | -3.88889 °C |
| 30 °F | -1.11111 °C |
| 37 °F | 2.77778 °C |
| 50 °F | 10 °C |
| 100 °F | 37.7778 °C |
How the conversion works
°F = °C × 1.8 + 32
Both units are defined exactly, so the precision of the Celsius to Fahrenheit result depends only on the number of decimal places you choose.
METHOD AND SOURCES
Where the conversion factors come from
Results are calculated from the unit definitions stored in the converter, not copied from a lookup table. For exact units, every value in the table follows from the same factor shown in the formula above.
- BIPM — SI Brochure
The official definitions of the International System of Units (SI).
- NIST SP 811 — Conversion factors
Conversion-factor tables for SI and non-SI units.
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