BTU per hour foot °F to Watts per metre kelvin
1 BTU per hour foot °F = 1.7307 watts per metre kelvin · 1 W/(m·K) = 0.57779 BTU/(h·ft·°F)
1 BTU per hour foot °F = 1.7307 watts per metre kelvin
How it’s calculated
W/(m·K) = BTU/(h·ft·°F) × 1.730734666
- Multiply the value in BTU per hour foot °F by 1.730734666.
- To go back, divide by 1.730734666 (or multiply by 0.5777893165).
- 1 BTU/(h·ft·°F) = 1.730734666 W/(m·K) · 1 W/(m·K) = 0.5777893165 BTU/(h·ft·°F)
Show worked solutionFactor, unit cancellation and rounding, step by step
Find the conversion factor
By definition 1 BTU/(h·ft·°F) = 1.73073466637139 W/(m·K). Source: NIST SP 811 / Handbook 44; BIPM SI Brochure (9th ed.).
Multiply by the factor written as a fraction
Put BTU/(h·ft·°F) in the denominator so it cancels, leaving W/(m·K).
Calculate (unrounded)
Round the answer
Rounded to 5 significant figures.
Answer: 1.7307 W/(m·K)
1 BTU/(h·ft·°F) in other units
Batch convert BTU/(h·ft·°F) → W/(m·K)
- 1 BTU/(h·ft·°F) = 1.7307 W/(m·K)
- 5 BTU/(h·ft·°F) = 8.6537 W/(m·K)
- 10 BTU/(h·ft·°F) = 17.307 W/(m·K)
- 25 BTU/(h·ft·°F) = 43.268 W/(m·K)
Quick examples
- 1 BTU per hour foot °F = 1.7307 watts per metre kelvin
- 5 BTU per hour foot °F = 8.6537 watts per metre kelvin
- 10 BTU per hour foot °F = 17.307 watts per metre kelvin
- 25 BTU per hour foot °F = 43.268 watts per metre kelvin
- 100 BTU per hour foot °F = 173.07 watts per metre kelvin
About these units
BTU per hour foot °F (BTU/(h·ft·°F))
US & imperial (identical)
IT BTU basis: ≈ 1.730 735 W/(m·K). The °F here is a temperature difference.
1 BTU/(h·ft·°F) = 1.730734666 W/(m·K)
Source: NIST SP 811 / Handbook 44
Watt per metre kelvin (W/(m·K))
SI (metric)
SI unit of thermal conductivity. Copper ≈ 400, steel ≈ 50, mineral wool ≈ 0.04 W/(m·K).
Base unit
Source: BIPM SI Brochure (9th ed.)
BTU per hour foot °F to watts per metre kelvin conversion table
| BTU per hour foot °F (BTU/(h·ft·°F)) | Watts per metre kelvin (W/(m·K)) |
|---|---|
| 0.025 BTU/(h·ft·°F) | 0.043268 W/(m·K) |
| 0.04 BTU/(h·ft·°F) | 0.069229 W/(m·K) |
| 0.1 BTU/(h·ft·°F) | 0.17307 W/(m·K) |
| 0.5 BTU/(h·ft·°F) | 0.86537 W/(m·K) |
| 1 BTU/(h·ft·°F) | 1.7307 W/(m·K) |
| 1.5 BTU/(h·ft·°F) | 2.5961 W/(m·K) |
| 15 BTU/(h·ft·°F) | 25.961 W/(m·K) |
| 50 BTU/(h·ft·°F) | 86.537 W/(m·K) |
| 100 BTU/(h·ft·°F) | 173.07 W/(m·K) |
| 200 BTU/(h·ft·°F) | 346.15 W/(m·K) |
| 237 BTU/(h·ft·°F) | 410.18 W/(m·K) |
| 400 BTU/(h·ft·°F) | 692.29 W/(m·K) |
Related conversions
Frequently asked questions
How do I convert BTU per hour foot °F to watts per metre kelvin?
Use W/(m·K) = BTU/(h·ft·°F) × 1.730734666. Multiply the value in BTU per hour foot °F by 1.730734666.
How many watts per metre kelvin are in 1 BTU per hour foot °F?
1 BTU per hour foot °F (BTU/(h·ft·°F)) equals 1.7307 watts per metre kelvin (W/(m·K)); more precisely 1.730734666.
How many BTU per hour foot °F are in 1 watt per metre kelvin?
1 watt per metre kelvin (W/(m·K)) equals 0.57779 BTU per hour foot °F (BTU/(h·ft·°F)); more precisely 0.5777893165.
What is 15 BTU/(h·ft·°F) in W/(m·K)?
15 BTU per hour foot °F = 25.961 watts per metre kelvin.
What is a BTU per hour foot °F?
IT BTU basis: ≈ 1.730 735 W/(m·K). The °F here is a temperature difference.
What is a watt per metre kelvin?
SI unit of thermal conductivity. Copper ≈ 400, steel ≈ 50, mineral wool ≈ 0.04 W/(m·K).
Formula: W/(m·K) = BTU/(h·ft·°F) × 1.730734666. Factors last reviewed 2026-10-27.