How many Kilocalorie/Hours are in 1 Calorie/Hour?

There are exactly 0.001 Kilocalorie/Hours in 1 Calorie/Hour. This means the conversion factor from Calorie/Hour to Kilocalorie/Hour is 0.001.

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

The formula to convert Calorie/Hour to Kilocalorie/Hour is: kcal/h = cal/h × 0.001. For example, to convert 10 Calorie/Hours to Kilocalorie/Hours, you would multiply 10 by 0.001.

What are the common uses of Calorie/Hour?

The Calorie/Hour is commonly used in power calculations, engineering and science, education.

How do you convert Calorie/Hour to Kilocalorie/Hour?

To convert Calorie/Hours to Kilocalorie/Hours, multiply by 0.001 (or divide by 1,000). Therefore, 1 Calorie/Hour (cal/h) equals 0.001 Kilocalorie/Hours (kcal/h).

Calorie/Hour to Kilocalorie/Hour Converter

Worked example: converting Calorie/Hour to Kilocalorie/Hour

Step 1 — start with the formula. kcal/h = cal/h × 0.001
Step 2 — substitute your figure. 10 cal/h × 0.001
Step 3 — read the result. 10 cal/h = 0.01 kcal/h
Step 4 — check it in reverse. cal/h = kcal/h × 1,000 returns 10 cal/h, which matches the figure you started with.

Power Converter

22 units available

Decimals:

From

To

0.001

1 cal/h = 0.001 kcal/h

Formula:

kcal/h = cal/h × 0.001

With your value: 1 cal/h = 0.001 kcal/h

How big is that?

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

Your value1.00 cal/h

LED bulb (7.7e+3× your value)7.74e+3 cal/h

Laptop (5.6e+4× your value)5.59e+4 cal/h

Microwave oven (8.6e+5× your value)8.60e+5 cal/h

Electric kettle (2.6e+6× your value)2.58e+6 cal/h

Family car engine (7.7e+7× your value)7.74e+7 cal/h

Other Calorie/Hour to Kilocalorie/Hour conversions

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

Calorie/Hour to Kilocalorie/Hour Conversion Table

Calorie/Hour (cal/h)	Kilocalorie/Hour (kcal/h)
0.5	0.0005
1	0.001
2	0.002
5	0.005
10	0.01
15	0.015
20	0.02
25	0.025
50	0.05
100	0.1
250	0.25
500	0.5
1000	1

Kilocalorie/Hour to Calorie/Hour Conversion Table

Kilocalorie/Hour (kcal/h)	Calorie/Hour (cal/h)
0.5	500
1	1,000
2	2,000
5	5,000
10	10,000
15	15,000
20	20,000
25	25,000
50	50,000
100	100,000
250	250,000
500	500,000
1000	1,000,000

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

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

How to Convert Calorie/Hour to Kilocalorie/Hour

To convert from Calorie/Hour (cal/h) to Kilocalorie/Hour (kcal/h), multiply the value by 0.001.

Formula: kcal/h = cal/h × 0.001

Reverse: cal/h = kcal/h × 1,000

Step-by-Step Example

Start with your value in Calorie/Hour. For example: 5 cal/h
Multiply by the conversion factor: 5 x 0.001
The result is: 0.005 kcal/h

Calorie/Hour and Kilocalorie/Hour Relationship

This calculation facilitates standardized conversion between recognized units of power. Since 1 Calorie/Hour represents a fraction of a Kilocalorie/Hour (1 Kilocalorie/Hour ≈ 1,000 Calorie/Hours), the Kilocalorie/Hour is the larger measurement interval. Understanding the relationship between Calorie/Hour and Kilocalorie/Hour is essential for accurate calculations in physics, engineering, commerce, and daily applications.

About Calorie/Hour

The Calorie/Hour (symbol: cal/h) is a recognized unit in the Standard measurement framework, utilized within power applications for precision and standardized data representation.

Common uses of Calorie/Hour: power calculations, engineering and science, education.

About Kilocalorie/Hour

The Kilocalorie/Hour (symbol: kcal/h) is a recognized unit in the Standard measurement framework, utilized within power applications for precision and standardized data representation.

Common uses of Kilocalorie/Hour: power calculations, engineering and science, education.

Frequently Asked Questions

How many Kilocalorie/Hours are in 1 Calorie/Hour?: There are exactly 0.001 Kilocalorie/Hours in 1 Calorie/Hour. This means the conversion factor from Calorie/Hour to Kilocalorie/Hour is 0.001.
What is the formula to convert Calorie/Hour to Kilocalorie/Hour?: The formula to convert Calorie/Hour to Kilocalorie/Hour is: kcal/h = cal/h × 0.001. For example, to convert 10 Calorie/Hours to Kilocalorie/Hours, you would multiply 10 by 0.001.
What is a Calorie/Hour?: The Calorie/Hour (symbol: cal/h) is a recognized unit in the Standard measurement framework, utilized within power applications for precision and standardized data representation.
What is a Kilocalorie/Hour?: The Kilocalorie/Hour (symbol: kcal/h) is a recognized unit in the Standard measurement framework, utilized within power applications for precision and standardized data representation.
What are the common uses of Calorie/Hour?: The Calorie/Hour is commonly used in power calculations, engineering and science, education.