Kilocalorie/Hour to BTU/Second Converter

Power Converter

22 units available

Decimals:

From

To

0.001102

1 kcal/h = 0.001102 BTU/s

Formula:

BTU/s = kcal/h × 0.0011015741

With your value: 1 kcal/h = 0.00110157 BTU/s

How big is that?

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

Your value1.00 kcal/h

LED bulb (7.7× your value)7.74 kcal/h

Laptop (56× your value)55.9 kcal/h

Microwave oven (8.6e+2× your value)860 kcal/h

Electric kettle (2.6e+3× your value)2.58e+3 kcal/h

Family car engine (7.7e+4× your value)7.74e+4 kcal/h

Other Kilocalorie/Hour to BTU/Second conversions

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

Kilocalorie/Hour to BTU/Second Conversion Table

Kilocalorie/Hour (kcal/h)	BTU/Second (BTU/s)
0.5	0.000551
1	0.001102
2	0.002203
5	0.005508
10	0.011016
15	0.016524
20	0.022031
25	0.027539
50	0.055079
100	0.110157
250	0.275394
500	0.550787
1000	1.101574

BTU/Second to Kilocalorie/Hour Conversion Table

BTU/Second (BTU/s)	Kilocalorie/Hour (kcal/h)
0.5	453.895921
1	907.791843
2	1,815.583686
5	4,538.959214
10	9,077.918428
15	13,616.877642
20	18,155.836855
25	22,694.796069
50	45,389.592139
100	90,779.184277
250	226,947.960693
500	453,895.921386
1000	907,791.842772

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.

Kilocalorie/Hour (kcal/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 Kilocalorie/Hour to BTU/Second

To convert from Kilocalorie/Hour (kcal/h) to BTU/Second (BTU/s), multiply the value by 0.0011015741.

Formula: BTU/s = kcal/h × 0.0011015741

Reverse: kcal/h = BTU/s × 907.791842772

Step-by-Step Example

Start with your value in Kilocalorie/Hour. For example: 5 kcal/h
Multiply by the conversion factor: 5 x 0.0011015741
The result is: 0.005508 BTU/s

About Kilocalorie/Hour

The kilocalorie/hour (kcal/h) is a unit of power. One kilocalorie/hour equals 1.162222222 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

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

There are exactly 0.0011015741 BTU/Second in 1 Kilocalorie/Hour. This means the conversion factor from Kilocalorie/Hour to BTU/Second is 0.0011015741.

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

The formula to convert Kilocalorie/Hour to BTU/Second is: BTU/s = kcal/h × 0.0011015741. For example, to convert 10 Kilocalorie/Hour to BTU/Second, you would multiply 10 by 0.0011015741.

What is a Kilocalorie/Hour?