BTU per hour to Watts (BTU/h to W)

Formula

1 BTU/h = 0.293071 W

watts = BTU per hour × 0.2930710702 — reverse: BTU per hour = watts × 3.412141633

The factor is derived from the SI definitions of both units (base unit: W) as listed in NIST SP 811; results on this page are shown to 6 significant figures, the API returns up to 12.

Worked examples

• 5 BTU/h = 1.46536 W
• 12.5 BTU/h = 3.66339 W
• 100 BTU/h = 29.3071 W

BTU per hour to watts conversion table

FAQ

How many watts are in one BTU per hour?

1 BTU/h = 0.293071 W. 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 BTU per hour to watts?

Multiply the value in BTU per hour by 0.2930710702: watts = BTU per hour × 0.2930710702. For example, 5 BTU/h = 1.46536 W.

How do I convert watts back to BTU per hour?

Multiply by the inverse factor 3.412141633 (BTU per hour = watts × 3.412141633), or use the watts-to-BTU per hour page.

Related conversions

• Watts to BTU per hour (reverse)
• Power Converter — all power units in one tool
• Horsepower (mechanical) to Kilowatts
• Kilowatts to Horsepower (mechanical)
• Kilowatts to Watts
• Watts to Kilowatts
• Metric horsepower (PS) to Kilowatts
• Kilowatts to Metric horsepower (PS)
• Tons of refrigeration to Kilowatts
• Kilowatts to Tons of refrigeration

Machine access

• API: GET https://tttkmbb.com/api/v1/convert?value=5&from_unit=BTU%2Fh&to_unit=W
• MCP: server https://tttkmbb.com/mcp, tool convert_units with {"value":5,"from_unit":"BTU/h","to_unit":"W"}
• Markdown: https://tttkmbb.com/conversion/btu-per-hour-to-watts.md · JSON: https://tttkmbb.com/conversion/btu-per-hour-to-watts.json (add ?value= for a result) · Units: /api/v1/units?quantity=power
• OpenAPI operationId: convert_units. Freshness: static. Authentication: none.

Sources

• NIST Special Publication 811 – Guide for the Use of the International System of Units (SI), Appendix B conversion factors (standard)
• BIPM – The International System of Units (SI Brochure, 9th edition) (standard)
• Wikipedia – Conversion of units (reference)