40°F to Celsius

40°F is 4.4°C (277.59 K). 40°F equals about 4.4°C. This temperature feels chilly for most people. Light jackets or sweaters are common for outdoor activities.

Fahrenheit to Celsius

Instant two-way conversion with Kelvin and a live scale.

Fahrenheit°F

°F

Type to convert · Enter copies · Ctrl/⌘S swaps

Celsius°C

4.4°C

Celsius

4.4 °C

Fahrenheit

40.0 °F

Kelvin

277.6 K

Formula · worked example

°C = (40 − 32) × 5/9 = 4.4

Worked example

°C = (40 − 32) × 5/9 = 4.4

Context: chilly weather. Reverse lookup: 4.4°C to Fahrenheit.

Nearby Fahrenheit values

Quick hops around 40°F

Fahrenheit	Celsius
35°F	1.7°C
36°F	2.2°C
37°F	2.8°C
38°F	3.3°C
39°F	3.9°C
40°F	4.4°C
41°F	5.0°C
42°F	5.6°C
43°F	6.1°C
44°F	6.7°C
45°F	7.2°C

More tools: Fahrenheit to Celsius · Celsius to Fahrenheit · Body temperature