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Kelvin to Celsius Converter

Convert kelvins to degrees Celsius in one step. Results update live in both directions, with a worked formula, nearby units and a 1–100 chart you can click.

KelvinFrom

CelsiusTo

°C

Decimal places

Step-by-step calculation

How to use the Kelvin to Celsius Converter

Type a value in the Kelvin box. The celsius result appears instantly.
Going the other way? Type in the Celsius box, or press the ⇄ swap button.
Set the precision with the decimal places menu.
Check the working in the step-by-step box, then press Copy result or click any row in the tables below.

Kelvin to celsius formula

°C = K − 273.15

Take the temperature in kelvins.
Subtract 273.15. The result is in degrees Celsius.

Example: 300 K − 273.15 = 26.85 °C.

Reverse formula: K = °C + 273.15. Example: 20 °C + 273.15 = 293.15 K.

Kelvin values are never negative; 0 K (−273.15 °C) is absolute zero.

K to °C conversion table (1–100)

Click any row to load it into the converter.

Kelvin to celsius

Kelvin	Celsius
1 K	-272.15 °C
2 K	-271.15 °C
3 K	-270.15 °C
4 K	-269.15 °C
5 K	-268.15 °C
6 K	-267.15 °C
7 K	-266.15 °C
8 K	-265.15 °C
9 K	-264.15 °C
10 K	-263.15 °C
11 K	-262.15 °C
12 K	-261.15 °C
13 K	-260.15 °C
14 K	-259.15 °C
15 K	-258.15 °C
16 K	-257.15 °C
17 K	-256.15 °C
18 K	-255.15 °C
19 K	-254.15 °C
20 K	-253.15 °C
21 K	-252.15 °C
22 K	-251.15 °C
23 K	-250.15 °C
24 K	-249.15 °C
25 K	-248.15 °C
26 K	-247.15 °C
27 K	-246.15 °C
28 K	-245.15 °C
29 K	-244.15 °C
30 K	-243.15 °C
31 K	-242.15 °C
32 K	-241.15 °C
33 K	-240.15 °C
34 K	-239.15 °C
35 K	-238.15 °C
36 K	-237.15 °C
37 K	-236.15 °C
38 K	-235.15 °C
39 K	-234.15 °C
40 K	-233.15 °C
41 K	-232.15 °C
42 K	-231.15 °C
43 K	-230.15 °C
44 K	-229.15 °C
45 K	-228.15 °C
46 K	-227.15 °C
47 K	-226.15 °C
48 K	-225.15 °C
49 K	-224.15 °C
50 K	-223.15 °C
51 K	-222.15 °C
52 K	-221.15 °C
53 K	-220.15 °C
54 K	-219.15 °C
55 K	-218.15 °C
56 K	-217.15 °C
57 K	-216.15 °C
58 K	-215.15 °C
59 K	-214.15 °C
60 K	-213.15 °C
61 K	-212.15 °C
62 K	-211.15 °C
63 K	-210.15 °C
64 K	-209.15 °C
65 K	-208.15 °C
66 K	-207.15 °C
67 K	-206.15 °C
68 K	-205.15 °C
69 K	-204.15 °C
70 K	-203.15 °C
71 K	-202.15 °C
72 K	-201.15 °C
73 K	-200.15 °C
74 K	-199.15 °C
75 K	-198.15 °C
76 K	-197.15 °C
77 K	-196.15 °C
78 K	-195.15 °C
79 K	-194.15 °C
80 K	-193.15 °C
81 K	-192.15 °C
82 K	-191.15 °C
83 K	-190.15 °C
84 K	-189.15 °C
85 K	-188.15 °C
86 K	-187.15 °C
87 K	-186.15 °C
88 K	-185.15 °C
89 K	-184.15 °C
90 K	-183.15 °C
91 K	-182.15 °C
92 K	-181.15 °C
93 K	-180.15 °C
94 K	-179.15 °C
95 K	-178.15 °C
96 K	-177.15 °C
97 K	-176.15 °C
98 K	-175.15 °C
99 K	-174.15 °C
100 K	-173.15 °C

Celsius to kelvin

Celsius	Kelvin
1 °C	274.15 K
2 °C	275.15 K
3 °C	276.15 K
4 °C	277.15 K
5 °C	278.15 K
6 °C	279.15 K
7 °C	280.15 K
8 °C	281.15 K
9 °C	282.15 K
10 °C	283.15 K
11 °C	284.15 K
12 °C	285.15 K
13 °C	286.15 K
14 °C	287.15 K
15 °C	288.15 K
16 °C	289.15 K
17 °C	290.15 K
18 °C	291.15 K
19 °C	292.15 K
20 °C	293.15 K
21 °C	294.15 K
22 °C	295.15 K
23 °C	296.15 K
24 °C	297.15 K
25 °C	298.15 K
26 °C	299.15 K
27 °C	300.15 K
28 °C	301.15 K
29 °C	302.15 K
30 °C	303.15 K
31 °C	304.15 K
32 °C	305.15 K
33 °C	306.15 K
34 °C	307.15 K
35 °C	308.15 K
36 °C	309.15 K
37 °C	310.15 K
38 °C	311.15 K
39 °C	312.15 K
40 °C	313.15 K
41 °C	314.15 K
42 °C	315.15 K
43 °C	316.15 K
44 °C	317.15 K
45 °C	318.15 K
46 °C	319.15 K
47 °C	320.15 K
48 °C	321.15 K
49 °C	322.15 K
50 °C	323.15 K
51 °C	324.15 K
52 °C	325.15 K
53 °C	326.15 K
54 °C	327.15 K
55 °C	328.15 K
56 °C	329.15 K
57 °C	330.15 K
58 °C	331.15 K
59 °C	332.15 K
60 °C	333.15 K
61 °C	334.15 K
62 °C	335.15 K
63 °C	336.15 K
64 °C	337.15 K
65 °C	338.15 K
66 °C	339.15 K
67 °C	340.15 K
68 °C	341.15 K
69 °C	342.15 K
70 °C	343.15 K
71 °C	344.15 K
72 °C	345.15 K
73 °C	346.15 K
74 °C	347.15 K
75 °C	348.15 K
76 °C	349.15 K
77 °C	350.15 K
78 °C	351.15 K
79 °C	352.15 K
80 °C	353.15 K
81 °C	354.15 K
82 °C	355.15 K
83 °C	356.15 K
84 °C	357.15 K
85 °C	358.15 K
86 °C	359.15 K
87 °C	360.15 K
88 °C	361.15 K
89 °C	362.15 K
90 °C	363.15 K
91 °C	364.15 K
92 °C	365.15 K
93 °C	366.15 K
94 °C	367.15 K
95 °C	368.15 K
96 °C	369.15 K
97 °C	370.15 K
98 °C	371.15 K
99 °C	372.15 K
100 °C	373.15 K

Common values

Kelvin	Celsius	Example
0 K	-273.15 °C	Absolute zero
77 K	-196.15 °C	Liquid nitrogen boils
255 K	-18.15 °C	255 K
273.15 K	0 °C	Water freezes
293.15 K	20 °C	Room temperature
298.15 K	25 °C	Standard ambient (25 °C)
310.15 K	37 °C	Body temperature
373.15 K	100 °C	Water boils
1,000 K	726.85 °C	1,000 K
5,778 K	5,504.85 °C	Sun's surface (approx.)

About kelvin and celsius

Kelvin (K). The kelvin is the SI unit of temperature. It starts at absolute zero (0 K = −273.15 °C), so it never goes negative and has no degree sign.

Celsius (°C). The Celsius scale sets 0 °C at the freezing point and 100 °C at the boiling point of water at sea level. One Celsius degree is the same size as one kelvin.

Frequently asked questions

How do you convert Kelvin to Celsius?

Subtract 273.15 from the kelvin value. For example, 300 K − 273.15 = 26.85 °C.

What is 0 K in Celsius?

0 K is absolute zero, −273.15 °C, the lowest possible temperature.

Can a temperature in kelvins be negative?

No. The Kelvin scale starts at absolute zero, so valid values are 0 K or higher. The converter flags any input below absolute zero.

What is 298.15 kelvins in degrees Celsius?

298.15 K is 25 °C (standard ambient (25 °C)).

Does this converter work offline?

Once the page has loaded, the conversion runs entirely in your browser, so it keeps working without a connection. It is free and needs no sign-up.

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