---
title: "Watt-hours to Calories — Wh to cal converter"
description: "1 watt-hour = 860.4207 calories. Convert watt-hours to calories with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/watt-hours-to-calories/
site: "At One Place"
---

# Watt-hours to calories

**1 watt-hour in calories: 1 Wh = 860.4207 cal**

cal = Wh × 860.4206501

To convert watt-hours to calories, multiply by 860.4206501. The table below gives the values people look up most often, and the converter works for any number.

## Watt-hours to calories table

*Common watt-hour values converted to calories.*

| Watt-hours | Calories |
| --- | --- |
| 1 Wh | 860.4207 |
| 2 Wh | 1,720.8413 |
| 3 Wh | 2,581.262 |
| 4 Wh | 3,441.6826 |
| 5 Wh | 4,302.1033 |
| 10 Wh | 8,604.2065 |
| 15 Wh | 12,906.31 |
| 20 Wh | 17,208.413 |
| 25 Wh | 21,510.516 |
| 30 Wh | 25,812.62 |
| 40 Wh | 34,416.826 |
| 50 Wh | 43,021.033 |
| 75 Wh | 64,531.549 |
| 100 Wh | 86,042.065 |
| 250 Wh | 215,105.16 |
| 500 Wh | 430,210.33 |
| 1,000 Wh | 860,420.65 |

## How the conversion works

The relationship is cal = Wh × 860.4206501. Both units measure energy, so the conversion is a fixed factor that never changes.

> Calorie: Thermochemical (small) calorie.

## Common questions

### How many calories are in one watt-hour?

One watt-hour equals 860.4207 calories. cal = Wh × 860.4206501.

### How do you convert watt-hours to calories?

Use cal = Wh × 860.4206501. So 10 Wh is 8,604.2065 cal.

### How many watt-hours are in one calorie?

One calorie equals 0.0011622 watt-hours, which is the reverse of the conversion above.

### Is there more than one kind of calorie?

Thermochemical (small) calorie.

## Related pages

- [Calories to Watt-hours](https://atoneplace.net/convert/calories-to-watt-hours/)
- [Watt-hours to Joules](https://atoneplace.net/convert/watt-hours-to-joules/)
- [Watt-hours to Kilojoules](https://atoneplace.net/convert/watt-hours-to-kilojoules/)
- [Watt-hours to Kilocalories](https://atoneplace.net/convert/watt-hours-to-kcal/)
- [Watt-hours to Kilowatt-hours](https://atoneplace.net/convert/watt-hours-to-kwh/)
- [Watt-hours to British thermal units](https://atoneplace.net/convert/watt-hours-to-btu/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)