# Kilocalories (food calories) to Kilowatt-hours (kcal to kWh)

> Convert kilocalories (food calories) to kilowatt-hours: 1 kcal = 0.00116222 kWh. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.

- Page id: `kcal-to-kwh` · Quantity: Energy (`energy`, base unit J) · Tool: `convert_units`
- Canonical page: https://tttkmbb.com/conversion/kcal-to-kwh · This document: https://tttkmbb.com/conversion/kcal-to-kwh.md · JSON: https://tttkmbb.com/conversion/kcal-to-kwh.json (add `?value=` for a result)

## Formula

- `1 kcal = 0.00116222 kWh`
- `kilowatt-hours = kilocalories (food calories) × 0.001162222222`
- Reverse: `kilocalories (food calories) = kilowatt-hours × 860.4206501`

The factor follows from the SI definitions of both units (NIST SP 811); values below are rounded to 6 significant figures, the API returns up to 12.

## Worked examples

- 5 kcal = 0.00581111 kWh
- 12.5 kcal = 0.0145278 kWh
- 100 kcal = 0.116222 kWh

## Conversion table

| Kilocalories (food calories) (kcal) | Kilowatt-hours (kWh) |
| --- | --- |
| 1 | 0.00116222 |
| 2 | 0.00232444 |
| 3 | 0.00348667 |
| 4 | 0.00464889 |
| 5 | 0.00581111 |
| 6 | 0.00697333 |
| 7 | 0.00813556 |
| 8 | 0.00929778 |
| 9 | 0.01046 |
| 10 | 0.0116222 |
| 15 | 0.0174333 |
| 20 | 0.0232444 |
| 25 | 0.0290556 |
| 30 | 0.0348667 |
| 40 | 0.0464889 |
| 50 | 0.0581111 |
| 75 | 0.0871667 |
| 100 | 0.116222 |
| 200 | 0.232444 |
| 250 | 0.290556 |
| 500 | 0.581111 |
| 1000 | 1.16222 |

## API

- `GET https://tttkmbb.com/api/v1/convert?value=5&from_unit=kcal&to_unit=kWh` → unified JSON envelope with `result.values.result`, `formula`, `factor`, `sources`, `freshness`
- MCP: server `https://tttkmbb.com/mcp`, tool `convert_units` with `{"value":5,"from_unit":"kcal","to_unit":"kWh"}`
- All energy units: https://tttkmbb.com/api/v1/units?quantity=energy · full converter: [Energy Converter](https://tttkmbb.com/conversion/energy.md)
- Authentication: none. Freshness: `static` (fixed conversion factors).

## FAQ

**How many kilowatt-hours are in one kilocalorie?**

1 kcal = 0.00116222 kWh. The factor comes from the SI definitions of both units (NIST SP 811 / BIPM), so it is exact or correct to at least 10 significant figures.

**What is the formula to convert kilocalories (food calories) to kilowatt-hours?**

Multiply the value in kilocalories (food calories) by 0.001162222222: kilowatt-hours = kilocalories (food calories) × 0.001162222222. For example, 5 kcal = 0.00581111 kWh.

**How do I convert kilowatt-hours back to kilocalories (food calories)?**

Multiply by the inverse factor 860.4206501 (kilocalories (food calories) = kilowatt-hours × 860.4206501), or use the kilowatt-hours-to-kilocalories (food calories) page.

## Related conversions

- [Kilowatt-hours to kilocalories (food calories)](https://tttkmbb.com/conversion/kwh-to-kcal.md) (reverse)
- [Kilocalories (food calories) to Kilojoules](https://tttkmbb.com/conversion/kcal-to-kj.md)
- [Kilojoules to Kilocalories (food calories)](https://tttkmbb.com/conversion/kj-to-kcal.md)
- [Joules to Calories (small, thermochemical)](https://tttkmbb.com/conversion/joules-to-calories.md)
- [Calories (small, thermochemical) to Joules](https://tttkmbb.com/conversion/calories-to-joules.md)
- [Kilowatt-hours to Megajoules](https://tttkmbb.com/conversion/kwh-to-mj.md)
- [Megajoules to Kilowatt-hours](https://tttkmbb.com/conversion/mj-to-kwh.md)
- [Kilowatt-hours to BTU](https://tttkmbb.com/conversion/kwh-to-btu.md)
- [BTU to Kilowatt-hours](https://tttkmbb.com/conversion/btu-to-kwh.md)

## Data Sources

- NIST Special Publication 811 – Guide for the Use of the International System of Units (SI), Appendix B conversion factors — https://www.nist.gov/pml/special-publication-811 (standard, retrieved 2026-09-24)
- BIPM – The International System of Units (SI Brochure, 9th edition) — https://www.bipm.org/en/publications/si-brochure (standard, retrieved 2026-09-24)
- Wikipedia – Conversion of units — https://en.wikipedia.org/wiki/Conversion_of_units (reference, retrieved 2026-09-24)