Convert 5 Calorie/Second (cal/s) to BTU/Hour (BTU/h).

5 Calorie/Second equals 71.382003 BTU/Hour. Multiply 5 by 14.276400593.

5 Calorie/Second = 71.382003 BTU/Hour

Worked example: converting Calorie/Second to BTU/Hour

Step 1 — start with the formula. BTU/h = cal/s × 14.276400593
Step 2 — substitute your figure. 5 cal/s × 14.276400593
Step 3 — read the result. 5 cal/s = 71.382003 BTU/h
Step 4 — check it in reverse. cal/s = BTU/h × 0.0700456669 returns 5 cal/s, which matches the figure you started with.

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From

To

71.382003

5 cal/s = 71.382003 BTU/h

Formula:

BTU/h = cal/s × 14.276400593

With your value: 5 cal/s = 71.38200297 BTU/h

How big is that?

Everyday references on a logarithmic scale, all expressed in calorie/second so you can sanity-check the result.

LED bulb (1/2.3 your value)2.15 cal/s

Your value5.00 cal/s

Laptop (3.1× your value)15.5 cal/s

Microwave oven (48× your value)239 cal/s

Electric kettle (1.4e+2× your value)717 cal/s

Family car engine (4.3e+3× your value)2.15e+4 cal/s

Other Calorie/Second to BTU/Hour conversions

1 cal/s to BTU/h 2 cal/s to BTU/h 3 cal/s to BTU/h 4 cal/s to BTU/h 6 cal/s to BTU/h 7 cal/s to BTU/h 8 cal/s to BTU/h Full Calorie/Second to BTU/Hour converter

Calorie/Second to BTU/Hour Conversion Table

Calorie/Second (cal/s)	BTU/Hour (BTU/h)
0.5	7.1382
1	14.276401
2	28.552801
5	71.382003
10	142.764006
15	214.146009
20	285.528012
25	356.910015
50	713.82003
100	1,427.640059
250	3,569.100148
500	7,138.200297
1000	14,276.400593

BTU/Hour to Calorie/Second Conversion Table

BTU/Hour (BTU/h)	Calorie/Second (cal/s)
0.5	0.035023
1	0.070046
2	0.140091
5	0.350228
10	0.700457
15	1.050685
20	1.400913
25	1.751142
50	3.502283
100	7.004567
250	17.511417
500	35.022833
1000	70.045667

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Calorie/Second (cal/s)

Power

Exact conversion

Derived from the watt (1 W = 1 J/s).

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

BTU/Hour (BTU/h)

Power

Exact conversion

Derived from the watt (1 W = 1 J/s).

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Calorie/Second to BTU/Hour

To convert from Calorie/Second (cal/s) to BTU/Hour (BTU/h), multiply the value by 14.276400593.

Formula: BTU/h = cal/s × 14.276400593

Reverse: cal/s = BTU/h × 0.0700456669

Step-by-Step Example

Start with your value in Calorie/Second. For example: 5 cal/s
Multiply by the conversion factor: 5 x 14.276400593
The result is: 71.382003 BTU/h

About Calorie/Second

The calorie/second (cal/s) is a unit of power. One calorie/second equals 4.184 watts. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: power calculations, engineering and science, education.

About BTU/Hour

The btu/hour (BTU/h) is a unit of power. One btu/hour equals 0.2930710702 watts. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: power calculations, engineering and science, education.

Frequently Asked Questions

What is 5 Calorie/Second in BTU/Hour?

5 Calorie/Second equals 71.382003 BTU/Hour.

How many BTU/Hour are in 1 Calorie/Second?

There are exactly 14.276400593 BTU/Hour in 1 Calorie/Second. This means the conversion factor from Calorie/Second to BTU/Hour is 14.276400593.

What is the formula to convert Calorie/Second to BTU/Hour?

The formula to convert Calorie/Second to BTU/Hour is: BTU/h = cal/s × 14.276400593. For example, to convert 10 Calorie/Second to BTU/Hour, you would multiply 10 by 14.276400593.

What is a Calorie/Second?