Watt-Hours to Kilocalories Conversion (Wh to kcal)

Watt-Hours to Kilocalories Converter

Enter the energy in watt-hours below to convert it to kilocalories.

Result in Kilocalories:

1 Wh = 0.860421 kcal

How to Convert Watt-Hours to Kilocalories

To convert a measurement in watt-hours to a measurement in kilocalories, multiply the energy by the following conversion ratio: 0.860421 kilocalories/watt-hour.

Since one watt-hour is equal to 0.860421 kilocalories, you can use this simple formula to convert:

kilocalories = watt-hours × 0.860421

The energy in kilocalories is equal to the energy in watt-hours multiplied by 0.860421.

For example, here's how to convert 5 watt-hours to kilocalories using the formula above.

kilocalories = (5 Wh × 0.860421) = 4.302103 kcal

How Many Kilocalories Are in a Watt-Hour?

There are 0.860421 kilocalories in a watt-hour, which is why we use this value in the formula above.

1 Wh = 0.860421 kcal

Watt-hours and kilocalories are both units used to measure energy. Keep reading to learn more about each unit of measure.

What Is a Watt-Hour?

The watt-hour is a measure of electrical energy equal to one watt of power over a one hour period.

Watt-hours are usually abbreviated as Wh, although the formally adopted expression is W·h. The abbreviation W h is also sometimes used. For example, 1 watt-hour can be written as 1 Wh, 1 W·h, or 1 W h.

In formal expressions, the centered dot (·) or space is used to separate units used to indicate multiplication in an expression and to avoid conflicting prefixes being misinterpreted as a unit symbol.^[1]

Learn more about watt-hours.

What Is a Kilocalorie?

One kilocalorie, is equal to the heat needed to raise the temperature of one kilogram of water from 14.5 to 15.5 degrees Celsius.

Kilocalories can be abbreviated as kcal; for example, 1 kilocalorie can be written as 1 kcal.

When being used to measure nutrition or metabolic processes, the large calorie is used, which is equal to one kilocalorie.

Learn more about kilocalories.

Watt-Hour to Kilocalorie Conversion Table

Table showing various watt-hour measurements converted to kilocalories.
Watt-hours	Kilocalories
1 Wh	0.860421 kcal
2 Wh	1.7208 kcal
3 Wh	2.5813 kcal
4 Wh	3.4417 kcal
5 Wh	4.3021 kcal
6 Wh	5.1625 kcal
7 Wh	6.0229 kcal
8 Wh	6.8834 kcal
9 Wh	7.7438 kcal
10 Wh	8.6042 kcal
11 Wh	9.4646 kcal
12 Wh	10.33 kcal
13 Wh	11.19 kcal
14 Wh	12.05 kcal
15 Wh	12.91 kcal
16 Wh	13.77 kcal
17 Wh	14.63 kcal
18 Wh	15.49 kcal
19 Wh	16.35 kcal
20 Wh	17.21 kcal
21 Wh	18.07 kcal
22 Wh	18.93 kcal
23 Wh	19.79 kcal
24 Wh	20.65 kcal
25 Wh	21.51 kcal
26 Wh	22.37 kcal
27 Wh	23.23 kcal
28 Wh	24.09 kcal
29 Wh	24.95 kcal
30 Wh	25.81 kcal
31 Wh	26.67 kcal
32 Wh	27.53 kcal
33 Wh	28.39 kcal
34 Wh	29.25 kcal
35 Wh	30.11 kcal
36 Wh	30.98 kcal
37 Wh	31.84 kcal
38 Wh	32.7 kcal
39 Wh	33.56 kcal
40 Wh	34.42 kcal

Table showing various watt-hour measurements converted to kilocalories.

Watt-hours

Kilocalories

1 Wh

0.860421 kcal

2 Wh

1.7208 kcal

3 Wh

2.5813 kcal

4 Wh

3.4417 kcal

5 Wh

4.3021 kcal

6 Wh

5.1625 kcal

7 Wh

6.0229 kcal

8 Wh

6.8834 kcal

9 Wh

7.7438 kcal

10 Wh

8.6042 kcal

11 Wh

9.4646 kcal

12 Wh

10.33 kcal

13 Wh

11.19 kcal

14 Wh

12.05 kcal

15 Wh

12.91 kcal

16 Wh

13.77 kcal

17 Wh

14.63 kcal

18 Wh

15.49 kcal

19 Wh

16.35 kcal

20 Wh

17.21 kcal

21 Wh

18.07 kcal

22 Wh

18.93 kcal

23 Wh

19.79 kcal

24 Wh

20.65 kcal

25 Wh

21.51 kcal

26 Wh

22.37 kcal

27 Wh

23.23 kcal

28 Wh

24.09 kcal

29 Wh

24.95 kcal

30 Wh

25.81 kcal

31 Wh

26.67 kcal

32 Wh

27.53 kcal

33 Wh

28.39 kcal

34 Wh

29.25 kcal

35 Wh

30.11 kcal

36 Wh

30.98 kcal

37 Wh

31.84 kcal

38 Wh

32.7 kcal

39 Wh

33.56 kcal

40 Wh

34.42 kcal

References

Bureau International des Poids et Mesures, The International System of Units (SI), 9th edition, 2019, https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf