BTU per hour to Tons of refrigeration (BTU/h to TR)

Formula

1 BTU/h = 0.0000833333 TR

tons of refrigeration = BTU per hour × 0.00008333333333 — reverse: BTU per hour = tons of refrigeration × 12000

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 = 0.000416667 TR
• 12.5 BTU/h = 0.00104167 TR
• 100 BTU/h = 0.00833333 TR

BTU per hour to tons of refrigeration conversion table

FAQ

How many tons of refrigeration are in one BTU per hour?

1 BTU/h = 0.0000833333 TR. 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 tons of refrigeration?

Multiply the value in BTU per hour by 0.00008333333333: tons of refrigeration = BTU per hour × 0.00008333333333. For example, 5 BTU/h = 0.000416667 TR.

How do I convert tons of refrigeration back to BTU per hour?

Multiply by the inverse factor 12000 (BTU per hour = tons of refrigeration × 12000), or use the tons of refrigeration-to-BTU per hour page.

Related conversions

• Tons of refrigeration 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
• BTU per hour to Watts
• Watts to BTU per hour
• Metric horsepower (PS) to Kilowatts
• Kilowatts to Metric horsepower (PS)

Machine access

• API: GET https://tttkmbb.com/api/v1/convert?value=5&from_unit=BTU%2Fh&to_unit=ton_refrigeration
• MCP: server https://tttkmbb.com/mcp, tool convert_units with {"value":5,"from_unit":"BTU/h","to_unit":"ton_refrigeration"}
• Markdown: https://tttkmbb.com/conversion/btu-per-hour-to-tons-of-refrigeration.md · JSON: https://tttkmbb.com/conversion/btu-per-hour-to-tons-of-refrigeration.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)