Watt-Hour to Calorie (IT) Converter

Energy Converter

27 units available

Decimals:

From

To

859.845228

1 Wh = 859.845228 cal (IT)

Formula:

cal (IT) = Wh × 859.845227859

With your value: 1 Wh = 859.84522786 cal (IT)

How big is that?

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

Heartbeat (1/3.6e+3 your value)0.000278 Wh

Your value1.00 Wh

AA battery charge (2.8× your value)2.78 Wh

Slice of bread (78× your value)77.8 Wh

Daily food intake (2.3e+3× your value)2.33e+3 Wh

Litre of petrol (9.5e+3× your value)9.50e+3 Wh

Other Watt-Hour to Calorie (IT) conversions

2 Wh to cal (IT)3 Wh to cal (IT)4 Wh to cal (IT)5 Wh to cal (IT)6 Wh to cal (IT)7 Wh to cal (IT)8 Wh to cal (IT)

Watt-Hour to Calorie (IT) Conversion Table

Watt-Hour (Wh)	Calorie (IT) (cal (IT))
0.5	429.922614
1	859.845228
2	1,719.690456
5	4,299.226139
10	8,598.452279
15	12,897.678418
20	17,196.904557
25	21,496.130696
50	42,992.261393
100	85,984.522786
250	214,961.306965
500	429,922.613929
1000	859,845.227859

Calorie (IT) to Watt-Hour Conversion Table

Calorie (IT) (cal (IT))	Watt-Hour (Wh)
0.5	0.000582
1	0.001163
2	0.002326
5	0.005815
10	0.01163
15	0.017445
20	0.02326
25	0.029075
50	0.05815
100	0.1163
250	0.29075
500	0.5815
1000	1.163

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.

Watt-Hour (Wh)

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

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 (IT) (cal (IT))

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

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 Watt-Hour to Calorie (IT)

To convert from Watt-Hour (Wh) to Calorie (IT) (cal (IT)), multiply the value by 859.845227859.

Formula: cal (IT) = Wh × 859.845227859

Reverse: Wh = cal (IT) × 0.001163

Step-by-Step Example

Start with your value in Watt-Hour. For example: 5 Wh
Multiply by the conversion factor: 5 x 859.845227859
The result is: 4,299.226139 cal (IT)

About Watt-Hour

The watt-hour (Wh) is a unit of energy and work. One watt-hour equals 3600 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: energy calculations, engineering and science, education.

About Calorie (IT)

The calorie (it) (cal (IT)) is a unit of energy and work. One calorie (it) equals 4.1868 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: energy calculations, engineering and science, education.

Frequently Asked Questions

How many Calorie (IT) are in 1 Watt-Hour?

There are exactly 859.845227859 Calorie (IT) in 1 Watt-Hour. This means the conversion factor from Watt-Hour to Calorie (IT) is 859.845227859.

What is the formula to convert Watt-Hour to Calorie (IT)?

The formula to convert Watt-Hour to Calorie (IT) is: cal (IT) = Wh × 859.845227859. For example, to convert 10 Watt-Hour to Calorie (IT), you would multiply 10 by 859.845227859.

What is a Watt-Hour?