Quick mental math: Double °C, subtract 10%, then add 32.
For 30°C: 60 − 6 + 32 = 86°F

Rough estimate: Double it and add 30.
30 × 2 + 30 = 90 (close to 86°F).

02 —

Common Celsius to Fahrenheit Conversions

0°C

32°F

Water freezes

10°C

50°F

Cool day

15°C

59°F

Mild weather

18°C

64.4°F

Light sweater

20°C

68°F

Room temperature

22°C

71.6°F

Comfortable indoor

23°C

73.4°F

Indoor comfort

24°C

75.2°F

Warm indoors

25°C

77°F

Warm day

29°C

84.2°F

Hot day

30°C

86°F

Very warm

35°C

95°F

Heat alert

37°C

98.6°F

Body temperature

38°C

100.4°F

Mild fever

39°C

102.2°F

High fever

40°C

104°F

Extreme heat

03 —

Celsius to Fahrenheit Chart

°C	°F	Condition	Band
1°C	33.8°F	Chilly — wear a coat	Cold
2°C	35.6°F	Chilly — wear a coat	Cold
3°C	37.4°F	Chilly — wear a coat	Cold
4°C	39.2°F	Chilly — wear a coat	Cold
5°C	41°F	Chilly — wear a coat	Cold
6°C	42.8°F	Cold — wear a jacket	Cold
7°C	44.6°F	Cold — wear a jacket	Cold
8°C	46.4°F	Cold — wear a jacket	Cold
9°C	48.2°F	Cold — wear a jacket	Cold
11°C	51.8°F	Cool — light jacket	Mild
12°C	53.6°F	Cool — light jacket	Mild
13°C	55.4°F	Cool — light jacket	Mild
14°C	57.2°F	Cool — light jacket	Mild
15°C	59°F	Cool — light jacket	Mild
16°C	60.8°F	Mild — comfortable	Mild
17°C	62.6°F	Mild — comfortable	Mild
18°C	64.4°F	Mild — comfortable	Mild
20°C	68°F	Mild — comfortable	Mild
22°C	71.6°F	Room / indoor comfort	Mild
23°C	73.4°F	Room / indoor comfort	Mild
24°C	75.2°F	Room / indoor comfort	Mild
25°C	77°F	Warm day	Warm
26°C	78.8°F	Warm day	Warm
29°C	84.2°F	Warm day	Warm
30°C	86°F	Warm day	Warm
31°C	87.8°F	Warm day	Warm
33°C	91.4°F	Hot	Hot
35°C	95°F	Hot	Hot
38°C	100.4°F	Fever (mild)	Hot
39°C	102.2°F	Fever (high)	Hot
40°C	104°F	High fever / dangerous heat	Hot

°C	°F	Gas Mark	Description
150°C	302°F	2	Low oven — slow cook
190°C	374°F	5	Hot baking / roasting
200°C	392°F	6	Hot — roasting
212°C	413.6°F	6–7	Very hot — crisping
220°C	428°F	7	Very hot — pizza/bread
250°C	482°F	9+	Max oven / wood-fired

°C	°F	Description
41°C	105.8°F	Reference
42°C	107.6°F	Reference
43°C	109.4°F	Reference
44°C	111.2°F	Reference
45°C	113°F	Reference
46°C	114.8°F	Reference
47°C	116.6°F	Reference
48°C	118.4°F	Reference
49°C	120.2°F	Reference
50°C	122°F	Reference
55°C	131°F	Reference
60°C	140°F	Reference
65°C	149°F	Reference
70°C	158°F	Reference
75°C	167°F	Reference
80°C	176°F	Reference
85°C	185°F	Reference
90°C	194°F	Reference
95°C	203°F	Reference
105°C	221°F	Reference
110°C	230°F	Reference

04 —

Landmark Temperatures

-273.15°C/ -459.67°F

Absolute Zero

Coldest possible temperature

-40°C/ -40°F

Scales Meet

Only point where °C = °F

0°C/ 32°F

Water Freezes

Freezing point at sea level

37°C/ 98.6°F

Body Temp

Average human temperature

100°C/ 212°F

Water Boils

Boiling point at sea level

05 —

Cooking & Oven Temperatures

160°C

320°F

Gas Mark 3

Cakes, custards

180°C

356°F

Gas Mark 4

Standard baking

200°C

392°F

Gas Mark 6

Roasting meats

220°C

428°F

Gas Mark 7

Bread, pastry

06 —

Frequently Asked Questions

Use °F = (°C × 9/5) + 32 (or °F = (°C × 1.8) + 32).

Yes. It uses the exact conversion formula. Any small difference you see is only rounding for display.

Scroll to the Celsius to Fahrenheit chart section. It includes a weather table, cooking temperatures, and a searchable full table.

−40°C = −40°F. It’s the only temperature where both scales match.

(51 × 1.8) + 32 = 123.8°F.

(54 × 1.8) + 32 = 129.2°F.

(63 × 1.8) + 32 = 145.4°F.

Yes. Centigrade is an older name for the Celsius scale. They refer to the same unit (°C).

Temperature Converters

Celsius to Kelvin Fahrenheit to Celsius Fahrenheit to Kelvin Kelvin to Celsius Kelvin to Fahrenheit