Convert 150 Calorie/Hour (cal/h) to BTU/Second (BTU/s).

150 Calorie/Hour equals 0.000165 BTU/Second. Multiply 150 by 1.101574e-6.

150 Calorie/Hour = 0.000165 BTU/Second

Worked example: converting Calorie/Hour to BTU/Second

Step 1 — start with the formula. BTU/s = cal/h × 0.0000011016
Step 2 — substitute your figure. 150 cal/h × 1.101574e-6
Step 3 — read the result. 150 cal/h = 0.000165 BTU/s
Step 4 — check it in reverse. cal/h = BTU/s × 907,791.8427720442 returns 149.7857 cal/h, which matches the figure you started with.

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0.000165

150 cal/h = 0.000165 BTU/s

Formula:

BTU/s = cal/h × 0.0000011016

With your value: 150 cal/h = 0.00016524 BTU/s

How big is that?

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

Your value150 cal/h

LED bulb (52× your value)7.74e+3 cal/h

Laptop (3.7e+2× your value)5.59e+4 cal/h

Microwave oven (5.7e+3× your value)8.60e+5 cal/h

Electric kettle (1.7e+4× your value)2.58e+6 cal/h

Family car engine (5.2e+5× your value)7.74e+7 cal/h

Other Calorie/Hour to BTU/Second conversions

90 cal/h to BTU/s 96 cal/h to BTU/s 100 cal/h to BTU/s 120 cal/h to BTU/s 200 cal/h to BTU/s 500 cal/h to BTU/s 1000 cal/h to BTU/s Full Calorie/Hour to BTU/Second converter

Calorie/Hour to BTU/Second Conversion Table

Calorie/Hour (cal/h)	BTU/Second (BTU/s)
0.5	5.507871e-7
1	1.101574e-6
2	2.203148e-6
5	5.507871e-6
10	1.101574e-5
15	1.652361e-5
20	2.203148e-5
25	2.753935e-5
50	5.507871e-5
100	0.00011
250	0.000275
500	0.000551
1000	0.001102

BTU/Second to Calorie/Hour Conversion Table

BTU/Second (BTU/s)	Calorie/Hour (cal/h)
0.5	453,895.921386
1	907,791.842772
2	1,815,583.685544
5	4,538,959.21386
10	9,077,918.42772
15	13,616,877.641581
20	18,155,836.855441
25	22,694,796.069301
50	45,389,592.138602
100	90,779,184.277204
250	226,947,960.693011
500	453,895,921.386022
1000	907,791,842.772044

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/Hour (cal/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

BTU/Second (BTU/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

How to Convert Calorie/Hour to BTU/Second

To convert from Calorie/Hour (cal/h) to BTU/Second (BTU/s), multiply the value by 1.101574e-6.

Formula: BTU/s = cal/h × 0.0000011016

Reverse: cal/h = BTU/s × 907,791.8427720442

Step-by-Step Example

Start with your value in Calorie/Hour. For example: 5 cal/h
Multiply by the conversion factor: 5 x 1.101574e-6
The result is: 5.507871e-6 BTU/s

About Calorie/Hour

The calorie/hour (cal/h) is a unit of power. One calorie/hour equals 0.001162222222 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/Second

The btu/second (BTU/s) is a unit of power. One btu/second equals 1055.055853 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 150 Calorie/Hour in BTU/Second?

150 Calorie/Hour equals 0.000165 BTU/Second.

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

There are exactly 1.101574e-6 BTU/Second in 1 Calorie/Hour. This means the conversion factor from Calorie/Hour to BTU/Second is 1.101574e-6.

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

The formula to convert Calorie/Hour to BTU/Second is: BTU/s = cal/h × 0.0000011016. For example, to convert 10 Calorie/Hour to BTU/Second, you would multiply 10 by 1.101574e-6.

What is a Calorie/Hour?