BTU/Second to Calorie/Hour Converter

Power Converter

22 units available

Decimals:

From

To

907,791.842772

1 BTU/s = 907,791.842772 cal/h

Formula:

cal/h = BTU/s × 907,791.8427720442

With your value: 1 BTU/s = 907,791.84277204 cal/h

How big is that?

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

LED bulb (1/1.2e+2 your value)0.00853 BTU/s

Laptop (1/16 your value)0.0616 BTU/s

Microwave oven (1/1.1 your value)0.948 BTU/s

Your value1.00 BTU/s

Electric kettle (2.8× your value)2.84 BTU/s

Family car engine (85× your value)85.3 BTU/s

Other BTU/Second to Calorie/Hour conversions

2 BTU/s to cal/h 3 BTU/s to cal/h 4 BTU/s to cal/h 5 BTU/s to cal/h 6 BTU/s to cal/h 7 BTU/s to cal/h 8 BTU/s to cal/h

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

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

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.

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

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

How to Convert BTU/Second to Calorie/Hour

To convert from BTU/Second (BTU/s) to Calorie/Hour (cal/h), multiply the value by 907,791.8427720442.

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

Reverse: BTU/s = cal/h × 0.0000011016

Step-by-Step Example

Start with your value in BTU/Second. For example: 5 BTU/s
Multiply by the conversion factor: 5 x 907,791.8427720442
The result is: 4,538,959.21386 cal/h

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.

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.

Frequently Asked Questions

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

There are exactly 907,791.8427720442 Calorie/Hour in 1 BTU/Second. This means the conversion factor from BTU/Second to Calorie/Hour is 907,791.8427720442.

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

The formula to convert BTU/Second to Calorie/Hour is: cal/h = BTU/s × 907,791.8427720442. For example, to convert 10 BTU/Second to Calorie/Hour, you would multiply 10 by 907,791.8427720442.

What is a BTU/Second?