What Is 101°F in Celsius?
101 degrees Fahrenheit is 38.3333 degrees Celsius.
How to Convert Fahrenheit to Celsius
To convert degrees Fahrenheit to degrees Celsius, subtract 32, then multiply by 5/9.
For example: 75 °F − 32 = 43, and 43 × 5/9 = 23.8889 °C.
Where You Meet This Number
American thermometers report in Fahrenheit, and 101 °F is a common first reading when someone feels unwell. Anyone used to Celsius needs 38.3 °C to place it against the familiar 38-degree fever threshold.
A thermometer showing 101 °F is 38.3 °C — a fever, but a moderate one.
What People Get Wrong
A single reading says little. Body temperature swings by up to a degree Celsius over a day, lowest in the early morning and highest in the late afternoon, so the same illness can read 100 °F at breakfast and 101.5 °F at dinner.
Body Temperatures in Fahrenheit and Celsius
| Degrees Fahrenheit (°F) | Degrees Celsius (°C) |
|---|---|
| 97 | 36.1111 |
| 98 | 36.6667 |
| 98.6 | 37 |
| 99 | 37.2222 |
| 100 | 37.7778 |
| 100.4 | 38 |
| 101 | 38.3333 |
| 102 | 38.8889 |
| 103 | 39.4444 |
| 104 | 40 |
| 105 | 40.5556 |
About These Scales
Degree Fahrenheit
On the Fahrenheit scale water freezes at 32 degrees and boils at 212 degrees, so one Fahrenheit degree is 5/9 the size of a Celsius degree. It remains the standard scale for weather, ovens and body temperature in the United States.
Degree Celsius
The Celsius scale puts the freezing point of water at 0 degrees and its boiling point at 100 degrees at sea level. It is the everyday temperature scale in nearly every country except the United States.
Definitions follow The SI Brochure, BIPM. See how we calculate for the exact values and rounding rules.
Frequently Asked Questions
Is 101 °F a fever?
Yes. It is above the 100.4 °F (38 °C) threshold, though it is a moderate rather than a high fever.
What is 102 °F in Celsius?
102 °F is 38.8889 °C, a moderate to high fever.
What is 99 °F in Celsius?
99 °F is 37.2222 °C, which is at the top of the normal range rather than a fever.
Should I treat a fever of 101 °F?
A fever is the immune response working, and treating the number alone is not always useful. Comfort, fluids and rest come first; ask a doctor if it persists, climbs, or comes with symptoms that concern you.