# Kilowatt-hours to Therms (kWh to therm)

> Convert kilowatt-hours to therms: 1 kWh = 0.0341214 therm. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.

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

## Formula

- `1 kWh = 0.0341214 therm`
- `therms = kilowatt-hours × 0.03412141633`
- Reverse: `kilowatt-hours = therms × 29.30710702`

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 kWh = 0.170607 therm
- 12.5 kWh = 0.426518 therm
- 100 kWh = 3.41214 therm

## Conversion table

| Kilowatt-hours (kWh) | Therms (therm) |
| --- | --- |
| 1 | 0.0341214 |
| 2 | 0.0682428 |
| 3 | 0.102364 |
| 4 | 0.136486 |
| 5 | 0.170607 |
| 6 | 0.204728 |
| 7 | 0.23885 |
| 8 | 0.272971 |
| 9 | 0.307093 |
| 10 | 0.341214 |
| 15 | 0.511821 |
| 20 | 0.682428 |
| 25 | 0.853035 |
| 30 | 1.02364 |
| 40 | 1.36486 |
| 50 | 1.70607 |
| 75 | 2.55911 |
| 100 | 3.41214 |
| 200 | 6.82428 |
| 250 | 8.53035 |
| 500 | 17.0607 |
| 1000 | 34.1214 |

## API

- `GET https://tttkmbb.com/api/v1/convert?value=5&from_unit=kWh&to_unit=therm` → 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":"kWh","to_unit":"therm"}`
- 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 therms are in one kilowatt-hour?**

1 kWh = 0.0341214 therm. 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 kilowatt-hours to therms?**

Multiply the value in kilowatt-hours by 0.03412141633: therms = kilowatt-hours × 0.03412141633. For example, 5 kWh = 0.170607 therm.

**How do I convert therms back to kilowatt-hours?**

Multiply by the inverse factor 29.30710702 (kilowatt-hours = therms × 29.30710702), or use the therms-to-kilowatt-hours page.

## Related conversions

- [Therms to kilowatt-hours](https://tttkmbb.com/conversion/therms-to-kwh.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)