BTU/Hour to Joule/Second Converter

Power Converter

22 units available

Decimals:

From

To

0.293071

1 BTU/h = 0.293071 J/s

Formula:

J/s = BTU/h × 0.2930710702

With your value: 1 BTU/h = 0.29307107 J/s

How big is that?

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

Your value1.00 BTU/h

LED bulb (31× your value)30.7 BTU/h

Laptop (2.2e+2× your value)222 BTU/h

Microwave oven (3.4e+3× your value)3.41e+3 BTU/h

Electric kettle (1.0e+4× your value)1.02e+4 BTU/h

Family car engine (3.1e+5× your value)3.07e+5 BTU/h

Other BTU/Hour to Joule/Second conversions

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

BTU/Hour to Joule/Second Conversion Table

BTU/Hour (BTU/h)	Joule/Second (J/s)
0.5	0.146536
1	0.293071
2	0.586142
5	1.465355
10	2.930711
15	4.396066
20	5.861421
25	7.326777
50	14.653554
100	29.307107
250	73.267768
500	146.535535
1000	293.07107

Joule/Second to BTU/Hour Conversion Table

Joule/Second (J/s)	BTU/Hour (BTU/h)
0.5	1.706071
1	3.412142
2	6.824283
5	17.060708
10	34.121416
15	51.182124
20	68.242833
25	85.303541
50	170.607082
100	341.214163
250	853.035408
500	1,706.070817
1000	3,412.141633

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/Hour (BTU/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

Joule/Second (J/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 BTU/Hour to Joule/Second

To convert from BTU/Hour (BTU/h) to Joule/Second (J/s), multiply the value by 0.2930710702.

Formula: J/s = BTU/h × 0.2930710702

Reverse: BTU/h = J/s × 3.4121416331

Step-by-Step Example

Start with your value in BTU/Hour. For example: 5 BTU/h
Multiply by the conversion factor: 5 x 0.2930710702
The result is: 1.465355 J/s

About BTU/Hour

The btu/hour (BTU/h) is a unit of power. One btu/hour equals 0.2930710702 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 Joule/Second

The joule/second (J/s) is a unit of power. One joule/second equals 1 watt. 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 Joule/Second are in 1 BTU/Hour?

There are exactly 0.2930710702 Joule/Second in 1 BTU/Hour. This means the conversion factor from BTU/Hour to Joule/Second is 0.2930710702.

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

The formula to convert BTU/Hour to Joule/Second is: J/s = BTU/h × 0.2930710702. For example, to convert 10 BTU/Hour to Joule/Second, you would multiply 10 by 0.2930710702.

What is a BTU/Hour?