Celsius to Fahrenheit chart

The two temperature scales are offset, not proportional — which is why there is exactly one point where they agree: −40 °C = −40 °F. The chart below covers the whole everyday range in 5-degree steps, calculated with the exact formula °F = °C × 9/5 + 32.

Celsius (°C)	Fahrenheit (°F)	What it feels like / means
-40	-40	The crossover: both scales read −40
-35	-31
-30	-22
-25	-13
-20	-4
-15	5
-10	14
-5	23
0	32	Water freezes
5	41
10	50	A cold day; jacket weather
15	59
20	68	Room temperature, roughly
25	77
30	86	A hot summer day
35	95
40	104	Fever territory; very hot day
45	113
50	122
55	131
60	140
65	149
70	158
75	167
80	176
85	185
90	194
95	203
100	212	Water boils at sea level

The two formulas

Celsius to Fahrenheit: multiply by 9/5, then add 32. Fahrenheit to Celsius: subtract 32, then multiply by 5/9. The 32 is the awkward part — Fahrenheit set the freezing point of water at 32 rather than 0, so the scales are shifted as well as stretched. Check the crossover with the formulas: −40 × 9/5 = −72, plus 32 is −40. Both directions land on the same number, the only temperature where you never need to ask which scale someone means.

Need a single value rather than the chart? The Celsius to Fahrenheit converter and its reverse page convert any figure instantly, including decimals like body temperature (37 °C = 98.6 °F).

What is 0 °C in Fahrenheit?

32 °F — the freezing point of water, and the offset built into the Fahrenheit scale.

Is there a quick mental shortcut?

Double the Celsius and add 30. It is within a couple of degrees across the weather range (20 °C → 70 °F against the true 68 °F) but drifts further for ovens and fevers — use the chart or converter there.

Why does the chart step by 5 °C?

Five Celsius degrees are exactly nine Fahrenheit degrees, so every row lands on a whole Fahrenheit number — no decimals anywhere in the table.