Milliwatt to Calorie/Hour Converter

Power Converter

22 units available

Decimals:

From

To

0.860421

1 mW = 0.860421 cal/h

Formula:

cal/h = mW × 0.8604206503

With your value: 1 mW = 0.86042065 cal/h

How big is that?

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

Your value1.00 mW

LED bulb (9.0e+3× your value)9.00e+3 mW

Laptop (6.5e+4× your value)6.50e+4 mW

Microwave oven (1.0e+6× your value)1.00e+6 mW

Electric kettle (3.0e+6× your value)3.00e+6 mW

Family car engine (9.0e+7× your value)9.00e+7 mW

Other Milliwatt to Calorie/Hour conversions

2 mW to cal/h 3 mW to cal/h 4 mW to cal/h 5 mW to cal/h 6 mW to cal/h 7 mW to cal/h 8 mW to cal/h

Milliwatt to Calorie/Hour Conversion Table

Milliwatt (mW)	Calorie/Hour (cal/h)
0.5	0.43021
1	0.860421
2	1.720841
5	4.302103
10	8.604207
15	12.90631
20	17.208413
25	21.510516
50	43.021033
100	86.042065
250	215.105163
500	430.210325
1000	860.42065

Calorie/Hour to Milliwatt Conversion Table

Calorie/Hour (cal/h)	Milliwatt (mW)
0.5	0.581111
1	1.162222
2	2.324444
5	5.811111
10	11.622222
15	17.433333
20	23.244444
25	29.055556
50	58.111111
100	116.222222
250	290.555556
500	581.111111
1000	1,162.222222

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.

Milliwatt (mW)

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 Milliwatt to Calorie/Hour

To convert from Milliwatt (mW) to Calorie/Hour (cal/h), multiply the value by 0.8604206503.

Formula: cal/h = mW × 0.8604206503

Reverse: mW = cal/h × 1.162222222

Step-by-Step Example

Start with your value in Milliwatt. For example: 5 mW
Multiply by the conversion factor: 5 x 0.8604206503
The result is: 4.302103 cal/h

About Milliwatt

The milliwatt (mW) is a unit of power. One milliwatt equals 0.001 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 Milliwatt?

There are exactly 0.8604206503 Calorie/Hour in 1 Milliwatt. This means the conversion factor from Milliwatt to Calorie/Hour is 0.8604206503.

What is the formula to convert Milliwatt to Calorie/Hour?

The formula to convert Milliwatt to Calorie/Hour is: cal/h = mW × 0.8604206503. For example, to convert 10 Milliwatt to Calorie/Hour, you would multiply 10 by 0.8604206503.

What is a Milliwatt?