Wh to calories converter

1 watt-hour equals 860.421 calories. Conversions use cal = Wh × 860.42

Wh → 860.421 cal

cal = Wh × 860.42

Converter

Worked examples

1 Wh = 860.421 cal
2 Wh = 1,720.84 cal
5 Wh = 4,302.1 cal
10 Wh = 8,604.21 cal
100 Wh = 86,042.07 cal

watt-hours to calories conversion table

Wh	cal	Arithmetic
1 Wh	860.421 cal	× 860.42
2 Wh	1,720.84 cal	× 860.42
3 Wh	2,581.26 cal	× 860.42
4 Wh	3,441.68 cal	× 860.42
5 Wh	4,302.1 cal	× 860.42
6 Wh	5,162.52 cal	× 860.42
8 Wh	6,883.37 cal	× 860.42
10 Wh	8,604.21 cal	× 860.42
12 Wh	10,325.05 cal	× 860.42
15 Wh	12,906.31 cal	× 860.42
20 Wh	17,208.41 cal	× 860.42
25 Wh	21,510.52 cal	× 860.42
30 Wh	25,812.62 cal	× 860.42
40 Wh	34,416.83 cal	× 860.42
50 Wh	43,021.03 cal	× 860.42
60 Wh	51,625.24 cal	× 860.42
70 Wh	60,229.45 cal	× 860.42
80 Wh	68,833.65 cal	× 860.42
90 Wh	77,437.86 cal	× 860.42
100 Wh	86,042.07 cal	× 860.42

How to convert Wh to cal

Take your value in watt-hours.
Multiply by 860.42
That is your answer in calories — no rounding needed until you choose a display precision.

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cal to Wh J to cal kJ to cal cal to J cal to kJ cal to kcal cal to kWh cal to Btu kcal to cal all energy units

Questions

How many calories in 1 watt-hour?

Exactly 860.421 cal. The factor follows from the definitions of both units, not from a measurement, so it is exact.

How do I convert Wh to cal?

Multiply the watt-hours figure by 860.42 — or use the converter above, which updates as you type.

Is Wh to cal the same as cal to Wh?

No — they are inverses. One Wh is 860.421 cal, while one cal is 0.0011622222 Wh.

What is 1 Wh in cal?

1 Wh = 860.421 cal (see the value page for the full arithmetic).