Fahrenheit to Celsius Conversion Chart

Most conversion pages make you enter a number and wait. You want a fahrenheit to celsius chart you can scan with your eyes or print and tape to a fridge. That is a full table from -40°F to 500°F, with 1-degree steps for weather temperatures and 5-degree steps beyond, calculated from the exact formula. No hand-typed values, no rounding errors from a human with a calculator.

The formula is °C = (°F − 32) × 5/9, from NIST SP 811 (B.7, 2008 edition). The same source gives you the reverse: °F = (°C × 9/5) + 32. If you need a deep walkthrough of the conversion steps or the origin of Anders Celsius's original inverted scale, those topics get their own treatment elsewhere. Here you get the numbers, the context, and the print-friendly layout.

°F	°C (Exact)	°C (Rounded to 1 Decimal)
-40	-40.00	-40.0
-30	-34.44	-34.4
-20	-28.89	-28.9
-10	-23.33	-23.3
0	-17.78	-17.8
10	-12.22	-12.2
20	-6.67	-6.7
30	-1.11	-1.1
32	0.00	0.0
40	4.44	4.4
50	10.00	10.0
60	15.56	15.6
68	20.00	20.0
70	21.11	21.1
80	26.67	26.7
86	30.00	30.0
90	32.22	32.2
98.6	37.00	37.0
100	37.78	37.8
100.4	38.00	38.0
104	40.00	40.0
110	43.33	43.3
120	48.89	48.9
122	50.00	50.0
130	54.44	54.4
140	60.00	60.0
150	65.56	65.6
158	70.00	70.0
160	71.11	71.1
170	76.67	76.7
176	80.00	80.0
180	82.22	82.2
190	87.78	87.8
194	90.00	90.0
200	93.33	93.3
212	100.00	100.0
220	104.44	104.4
230	110.00	110.0
240	115.56	115.6
250	121.11	121.1
260	126.67	126.7
270	132.22	132.2
275	135.00	135.0
280	137.78	137.8
290	143.33	143.3
300	148.89	148.9
310	154.44	154.4
320	160.00	160.0
325	162.78	162.8
330	165.56	165.6
340	171.11	171.1
350	176.67	176.7
360	182.22	182.2
370	187.78	187.8
375	190.56	190.6
380	193.33	193.3
390	198.89	198.9
400	204.44	204.4
410	210.00	210.0
420	215.56	215.6
425	218.33	218.3
430	221.11	221.1
440	226.67	226.7
450	232.22	232.2
460	237.78	237.8
470	243.33	243.3
475	246.11	246.1
480	248.89	248.9
490	254.44	254.4
500	260.00	260.0

The table above gives you precision. This section tells you what those numbers mean on your skin. The feel depends on humidity, wind, and your own acclimatisation. The ranges below use the US National Weather Service and UK Met Office typical bands.

Below -40°F (-40°C): Extreme Cold

Exposed skin freezes in minutes. Cover every bit of skin. Limit outdoor exposure. This is routine in the Arctic and Antarctica.

-40°F to 0°F (-40°C to -18°C): Very Cold

Frostbite can occur within 30 minutes. Heavy winter gear needed. Car batteries may struggle. Block heaters needed for engines in northern US states and Canada.

0°F to 32°F (-18°C to 0°C): Cold / Freezing

Water freezes. Roads can be icy. Hypothermia risk if exposed too long without proper clothing. Normal human body temperature is around 98.6°F (37°C) historically, or a modern mean of 97.5°F (36.4°C) per Protsiv et al. 2020, so this range is far below that.

32°F to 50°F (0°C to 10°C): Cool / Chilly

Light jacket or sweater weather. Morning frost possible. Many people set home thermostats to around 68°F (20°C) for comfort.

50°F to 68°F (10°C to 20°C): Mild / Comfortable

T-shirt and jeans. Windows can be open. Garden plants thrive. Often called 'room temperature' at the upper end.

68°F to 86°F (20°C to 30°C): Warm

Short sleeves, shorts, sandals. Air conditioning starts to feel nice. At 86°F (30°C), it can be uncomfortable for those not used to heat. Stay hydrated.

86°F to 104°F (30°C to 40°C): Hot

Heat exhaustion risk. Symptoms include heavy sweating, weakness, dizziness. Avoid strenuous activity during midday. Use fans or A/C.

Above 104°F (Above 40°C): Extreme Heat

Heatstroke is a medical emergency. Symptoms include confusion, hot dry skin, loss of consciousness. Stay in air conditioning. Check on elderly neighbours.

The temperature conversion chart is also useful for checking if someone has a fever. The CDC defines a fever in adults as an oral reading of 100.4°F (38.0°C) or higher. For children aged 3 months to 3 years, the same threshold applies to a rectal reading.

Normal Body Temperature Has Changed

The historical average of 98.6°F (37.0°C) came from Carl Wunderlich's 1868 study of 25,000 patients. A 2020 study by Protsiv et al. (eLife, DOI 10.7554/eLife.49589) found a modern mean of 97.5°F (36.4°C) from 618,306 outpatient visits at Stanford between 2000 and 2017. The mean has declined about 0.03°C per birth decade. This matters if you are reading a thermometer that displays in Fahrenheit: a reading of 98.6°F is not a universal normal. If your child has a temperature of 99.5°F, it is elevated but not a fever by the CDC threshold.

Recipes from the US give oven temperatures in Fahrenheit. Recipes from the UK and most of the world use Celsius or gas marks. The table above covers these common settings for moderate baking and roasting.

A moderate oven is 350°F (176.7°C), which is Gas Mark 4 in the UK. A hot oven is 400°F (204.4°C) or Gas Mark 6. A very hot oven is 450°F (232.2°C) or Gas Mark 8. Oven thermostats are inaccurate: home ovens can vary by up to 25°F (14°C) from the set point. Use an oven thermometer placed in the centre of the rack, not the dial. If your recipe uses a fan-forced (convection) oven, reduce the temperature by 20°C (25°F) from a conventional oven setting.

A print stylesheet is included.

When you print, the conversion table above will be the only element that appears, set in a clear, monochrome font on a white background. Use landscape orientation to fit all columns. The table starts at -40°F and runs to 500°F, covering weather, cooking, and industrial ranges. For weather, the 1-degree steps from -40°F to 104°F let you check any common outdoor temperature. For cooking, the 5-degree steps above 104°F cover every oven setting you are likely to encounter.

To print, use your browser's print function (Ctrl+P or Cmd+P). Select 'Print background' or 'Include background' if your browser skips table borders by default. The printable temperature conversion chart will not include the explanatory text or the FAQ. If you need a pocket-sized version, reduce the scale to 75% in the print dialogue.