BTU/Second to Kilojoule/Hour Converter

Power Converter

22 units available

Decimals:

From

To

3,798.201069

1 BTU/s = 3,798.201069 kJ/h

Formula:

kJ/h = BTU/s × 3,798.201069432

With your value: 1 BTU/s = 3,798.20106943 kJ/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 Kilojoule/Hour conversions

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

BTU/Second to Kilojoule/Hour Conversion Table

BTU/Second (BTU/s)	Kilojoule/Hour (kJ/h)
0.5	1,899.100535
1	3,798.201069
2	7,596.402139
5	18,991.005347
10	37,982.010694
15	56,973.016041
20	75,964.021389
25	94,955.026736
50	189,910.053472
100	379,820.106943
250	949,550.267358
500	1,899,100.534716
1000	3,798,201.069432

Kilojoule/Hour to BTU/Second Conversion Table

Kilojoule/Hour (kJ/h)	BTU/Second (BTU/s)
0.5	0.000132
1	0.000263
2	0.000527
5	0.001316
10	0.002633
15	0.003949
20	0.005266
25	0.006582
50	0.013164
100	0.026328
250	0.065821
500	0.131641
1000	0.263283

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

Kilojoule/Hour (kJ/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 Kilojoule/Hour

To convert from BTU/Second (BTU/s) to Kilojoule/Hour (kJ/h), multiply the value by 3,798.201069432.

Formula: kJ/h = BTU/s × 3,798.201069432

Reverse: BTU/s = kJ/h × 0.0002632825

Step-by-Step Example

Start with your value in BTU/Second. For example: 5 BTU/s
Multiply by the conversion factor: 5 x 3,798.201069432
The result is: 18,991.005347 kJ/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 Kilojoule/Hour

The kilojoule/hour (kJ/h) is a unit of power. One kilojoule/hour equals 0.2777777778 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 Kilojoule/Hour are in 1 BTU/Second?

There are exactly 3,798.201069432 Kilojoule/Hour in 1 BTU/Second. This means the conversion factor from BTU/Second to Kilojoule/Hour is 3,798.201069432.

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

The formula to convert BTU/Second to Kilojoule/Hour is: kJ/h = BTU/s × 3,798.201069432. For example, to convert 10 BTU/Second to Kilojoule/Hour, you would multiply 10 by 3,798.201069432.

What is a BTU/Second?