How many kilowatt hours are in 1 kilocalorie?

1 kilocalorie equals exactly 0.001163 kilowatt hours (kWh). This comes from the thermochemical definition: 1 kcal = 4,186.8 joules and 1 kWh = 3,600,000 joules.

How many kilocalories are in 1 kilowatt hour?

1 kilowatt hour equals approximately 859.845 kilocalories. This is the inverse of the kcal → kWh conversion factor.

What is the difference between a calorie and a kilocalorie?

1 kilocalorie (kcal) = 1,000 calories (cal). In everyday nutrition, "Calorie" (capital C) refers to kilocalories — so a 500 Calorie meal is actually 500 kcal.

Why would I compare kcal to kWh?

Both are units of energy. Comparing them helps visualize how much electrical work could theoretically be done by food energy, or how much food you would need to match a battery capacity.

Is this a thermochemical or international table kilocalorie?

This converter uses the thermochemical kilocalorie (1 kcal = 4,184 J), which is the standard in most scientific and nutrition contexts.

Kilocalories to Kilowatt Hours Converter

Name: Kilocalories to Kilowatt Hours Converter
Availability: InStock
Author: Nham Vu

Convert between kilocalories (kcal) and kilowatt hours (kWh) instantly — useful for comparing food energy with electricity usage.

Energy Converter

Kilocalories (kcal)

kcal

Kilowatt Hours (kWh)

kWh

Conversion Reference

kcal	kWh

Conversion Factor

1 kcal = 0.0011630556 kWh

1 kWh = 859.8452 kcal

Based on thermochemical kilocalorie: 1 kcal = 4,184 J; 1 kWh = 3,600,000 J.

Summary

Convert between kilocalories (kcal) and kilowatt hours (kWh) instantly — useful for comparing food energy with electricity usage.

How it works

Enter a value in either the kcal or kWh field.
The converter applies the exact factor: 1 kcal = 0.001163 kWh.
The result appears immediately in the opposite field.
Use the swap button to flip the conversion direction.
Copy the result to clipboard with one click.

Use cases

Compare the energy in a meal to how much electricity it would power.
Calculate how many kilocalories are stored in a battery expressed in kWh.
Understand energy equivalence in physics or engineering coursework.
Convert dietary energy totals for science or nutrition research.
Estimate how much food energy equals one unit of household electricity.
Cross-check energy balance spreadsheets mixing food and electrical units.

Frequently Asked Questions

Last updated: 2026-07-01 · Reviewed by Nham Vu