Convert 15 Calorie/Second (cal/s) to BTU/Minute (BTU/min).

15 Calorie/Second equals 3.5691 BTU/Minute. Multiply 15 by 0.2379400099.

15 Calorie/Second = 3.5691 BTU/Minute

Worked example: converting Calorie/Second to BTU/Minute

Step 1 — start with the formula. BTU/min = cal/s × 0.2379400099
Step 2 — substitute your figure. 15 cal/s × 0.2379400099
Step 3 — read the result. 15 cal/s = 3.5691 BTU/min
Step 4 — check it in reverse. cal/s = BTU/min × 4.202740012 returns 15 cal/s, which matches the figure you started with.

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3.5691

15 cal/s = 3.5691 BTU/min

Formula:

BTU/min = cal/s × 0.2379400099

With your value: 15 cal/s = 3.56910015 BTU/min

How big is that?

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

LED bulb (1/7.0 your value)2.15 cal/s

Your value15.0 cal/s

Laptop (1.0× your value)15.5 cal/s

Microwave oven (16× your value)239 cal/s

Electric kettle (48× your value)717 cal/s

Family car engine (1.4e+3× your value)2.15e+4 cal/s

Other Calorie/Second to BTU/Minute conversions

11 cal/s to BTU/min 12 cal/s to BTU/min 13 cal/s to BTU/min 14 cal/s to BTU/min 16 cal/s to BTU/min 18 cal/s to BTU/min 20 cal/s to BTU/min Full Calorie/Second to BTU/Minute converter

Calorie/Second to BTU/Minute Conversion Table

Calorie/Second (cal/s)	BTU/Minute (BTU/min)
0.5	0.11897
1	0.23794
2	0.47588
5	1.1897
10	2.3794
15	3.5691
20	4.7588
25	5.9485
50	11.897
100	23.794001
250	59.485002
500	118.970005
1000	237.94001

BTU/Minute to Calorie/Second Conversion Table

BTU/Minute (BTU/min)	Calorie/Second (cal/s)
0.5	2.10137
1	4.20274
2	8.40548
5	21.0137
10	42.0274
15	63.0411
20	84.0548
25	105.0685
50	210.137001
100	420.274001
250	1,050.685003
500	2,101.370006
1000	4,202.740012

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/Minute (BTU/min)

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/Minute

To convert from Calorie/Second (cal/s) to BTU/Minute (BTU/min), multiply the value by 0.2379400099.

Formula: BTU/min = cal/s × 0.2379400099

Reverse: cal/s = BTU/min × 4.202740012

Step-by-Step Example

Start with your value in Calorie/Second. For example: 5 cal/s
Multiply by the conversion factor: 5 x 0.2379400099
The result is: 1.1897 BTU/min

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/Minute

The btu/minute (BTU/min) is a unit of power. One btu/minute equals 17.58426421 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 15 Calorie/Second in BTU/Minute?

15 Calorie/Second equals 3.5691 BTU/Minute.

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

There are exactly 0.2379400099 BTU/Minute in 1 Calorie/Second. This means the conversion factor from Calorie/Second to BTU/Minute is 0.2379400099.

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

The formula to convert Calorie/Second to BTU/Minute is: BTU/min = cal/s × 0.2379400099. For example, to convert 10 Calorie/Second to BTU/Minute, you would multiply 10 by 0.2379400099.

What is a Calorie/Second?