Convert 9 Calorie/Hour (cal/h) to Calorie/Second (cal/s).

9 Calorie/Hour equals 0.0025 Calorie/Second. Multiply 9 by 0.0002777778.

9 Calorie/Hour = 0.0025 Calorie/Second

Worked example: converting Calorie/Hour to Calorie/Second

Step 1 — start with the formula. cal/s = cal/h × 0.0002777778
Step 2 — substitute your figure. 9 cal/h × 0.0002777778
Step 3 — read the result. 9 cal/h = 0.0025 cal/s
Step 4 — check it in reverse. cal/h = cal/s × 3,600.0000006883 returns 9 cal/h, which matches the figure you started with.

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0.0025

9 cal/h = 0.0025 cal/s

Formula:

cal/s = cal/h × 0.0002777778

With your value: 9 cal/h = 0.0025 cal/s

How big is that?

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

Your value9.00 cal/h

LED bulb (8.6e+2× your value)7.74e+3 cal/h

Laptop (6.2e+3× your value)5.59e+4 cal/h

Microwave oven (9.6e+4× your value)8.60e+5 cal/h

Electric kettle (2.9e+5× your value)2.58e+6 cal/h

Family car engine (8.6e+6× your value)7.74e+7 cal/h

Other Calorie/Hour to Calorie/Second conversions

5 cal/h to cal/s 6 cal/h to cal/s 7 cal/h to cal/s 8 cal/h to cal/s 10 cal/h to cal/s 11 cal/h to cal/s 12 cal/h to cal/s Full Calorie/Hour to Calorie/Second converter

Calorie/Hour to Calorie/Second Conversion Table

Calorie/Hour (cal/h)	Calorie/Second (cal/s)
0.5	0.000139
1	0.000278
2	0.000556
5	0.001389
10	0.002778
15	0.004167
20	0.005556
25	0.006944
50	0.013889
100	0.027778
250	0.069444
500	0.138889
1000	0.277778

Calorie/Second to Calorie/Hour Conversion Table

Calorie/Second (cal/s)	Calorie/Hour (cal/h)
0.5	1,800
1	3,600.000001
2	7,200.000001
5	18,000.000003
10	36,000.000007
15	54,000.00001
20	72,000.000014
25	90,000.000017
50	180,000.000034
100	360,000.000069
250	900,000.000172
500	1,800,000.000344
1000	3,600,000.000688

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.

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

Calorie/Second (cal/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 Calorie/Hour to Calorie/Second

To convert from Calorie/Hour (cal/h) to Calorie/Second (cal/s), multiply the value by 0.0002777778.

Formula: cal/s = cal/h × 0.0002777778

Reverse: cal/h = cal/s × 3,600.0000006883

Step-by-Step Example

Start with your value in Calorie/Hour. For example: 5 cal/h
Multiply by the conversion factor: 5 x 0.0002777778
The result is: 0.001389 cal/s

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.

About Calorie/Second

The calorie/second (cal/s) is a unit of power. One calorie/second equals 4.184 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

What is 9 Calorie/Hour in Calorie/Second?

9 Calorie/Hour equals 0.0025 Calorie/Second.

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

There are exactly 0.0002777778 Calorie/Second in 1 Calorie/Hour. This means the conversion factor from Calorie/Hour to Calorie/Second is 0.0002777778.

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

The formula to convert Calorie/Hour to Calorie/Second is: cal/s = cal/h × 0.0002777778. For example, to convert 10 Calorie/Hour to Calorie/Second, you would multiply 10 by 0.0002777778.

What is a Calorie/Hour?