BTU/(hr·ft·°F) to W/(m·K) (BTU/(hr·ft·°F) to W/(m·K))
Result
1.730734666 W/(m·K)
Formula
W/(m·K) = BTU/(hr·ft·°F) × 1.730734666
1 BTU/(hr·ft·°F) = 1.730734666 W/(m·K), and 1 W/(m·K) = 0.5777893167 BTU/(hr·ft·°F).
Thermal conductivity converts between SI and US units using the International Table BTU: 1 BTU/(h·ft·°F) = 1.730735 W/(m·K).
Worked examples
- 1 BTU/(hr·ft·°F) × 1.730734666 = 1.7307347 W/(m·K)
- 10 BTU/(hr·ft·°F) × 1.730734666 = 17.307347 W/(m·K)
- 100 BTU/(hr·ft·°F) × 1.730734666 = 173.07347 W/(m·K)
Common mistakes
- Conductivity (k) is a property of a material. U-values and R-values describe a whole wall or panel of a given thickness, so they are different quantities.
BTU/(hr·ft·°F) to W/(m·K) table
| BTU/(hr·ft·°F) (BTU/(hr·ft·°F)) | W/(m·K) (W/(m·K)) |
|---|---|
| 1 | 1.7307347 |
| 2 | 3.4614693 |
| 5 | 8.6536733 |
| 10 | 17.307347 |
| 20 | 34.614693 |
| 50 | 86.536733 |
| 100 | 173.07347 |
| 1,000 | 1,730.7347 |
The units
- BTU/(hr·ft·°F) (BTU/(hr·ft·°F))
- 1 BTU/(hr·ft·°F) = 1.730734666 W/(m·K).
- W/(m·K) (W/(m·K))
- A unit of thermal.
Sources for these factors
- Guide for the Use of the International System of Units (SP 811), Appendix B: conversion factors — NIST
Last reviewed against these sources. An automated check recomputes every factor from its definition on each build. How we check accuracy