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Watts per metre kelvin to BTU per hour foot °F

Convert watts per metre kelvin to BTU per hour foot °F instantly.

Watts per metre kelvin to BTU per hour foot °F (W/(m·K) to BTU/(h·ft·°F)) Converter

1 watt per metre kelvin = 0.57779 BTU per hour foot °F

1 W/(m·K) ≈ 0.57778932 BTU/(h·ft·°F)
From
  • Watts per metre kelvinW/(m·K)
  • BTU per hour foot °FBTU/(h·ft·°F)
To
  • Watts per metre kelvinW/(m·K)
  • BTU per hour foot °FBTU/(h·ft·°F)

Permanent link to this conversion

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How it’s calculated

BTU/(h·ft·°F) = W/(m·K) × 0.5777893165

  • Multiply the value in watts per metre kelvin by 0.5777893165.
  • To go back, divide by 0.5777893165 (or multiply by 1.730734666).
  • 1 W/(m·K) = 0.5777893165 BTU/(h·ft·°F) · 1 BTU/(h·ft·°F) = 1.730734666 W/(m·K)

Quick examples

1 watt per metre kelvin = 0.57779 BTU per hour foot °F · 1 BTU/(h·ft·°F) = 1.7307 W/(m·K)

  • 1 watt per metre kelvin = 0.57779 BTU per hour foot °F
  • 5 watts per metre kelvin = 2.8889 BTU per hour foot °F
  • 10 watts per metre kelvin = 5.7779 BTU per hour foot °F
  • 25 watts per metre kelvin = 14.445 BTU per hour foot °F
  • 100 watts per metre kelvin = 57.779 BTU per hour foot °F

Watts per metre kelvin to BTU per hour foot °F conversion table

watt per metre kelvin (W/(m·K)) to BTU per hour foot °F (BTU/(h·ft·°F))
Watts per metre kelvin (W/(m·K))BTU per hour foot °F (BTU/(h·ft·°F))
0.025 W/(m·K)0.014445 BTU/(h·ft·°F)
0.04 W/(m·K)0.023112 BTU/(h·ft·°F)
0.1 W/(m·K)0.057779 BTU/(h·ft·°F)
0.5 W/(m·K)0.28889 BTU/(h·ft·°F)
1 W/(m·K)0.57779 BTU/(h·ft·°F)
1.5 W/(m·K)0.86668 BTU/(h·ft·°F)
15 W/(m·K)8.6668 BTU/(h·ft·°F)
50 W/(m·K)28.889 BTU/(h·ft·°F)
100 W/(m·K)57.779 BTU/(h·ft·°F)
200 W/(m·K)115.56 BTU/(h·ft·°F)

About these units

Watt per metre kelvin (W/(m·K))

SI (metric)

Base unit

The SI unit of thermal conductivity. Copper is about 400, steel is about 50, mineral wool is about 0.04 W/(m·K).

Source: BIPM SI Brochure (9th ed.)

BTU per hour foot °F (BTU/(h·ft·°F))

US & imperial (identical)

1 BTU/(h·ft·°F) ≈ 1.7307347 W/(m·K)

BTU per hour per foot per °F, about 1.7307 W/(m·K). The °F here is a temperature difference.

Source: NIST SP 811 / Handbook 44

Frequently asked questions

How do I convert watts per metre kelvin to BTU per hour foot °F?

Use BTU/(h·ft·°F) = W/(m·K) × 0.5777893165. Multiply the value in watts per metre kelvin by 0.5777893165.

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.

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.

What is 15 W/(m·K) in BTU/(h·ft·°F)?

15 watts per metre kelvin = 8.6668 BTU per hour foot °F.

What is a watt per metre kelvin?

The SI unit of thermal conductivity. Copper is about 400, steel is about 50, mineral wool is about 0.04 W/(m·K).

What is a BTU per hour foot °F?

BTU per hour per foot per °F, about 1.7307 W/(m·K). The °F here is a temperature difference.

Related conversions

Formula: BTU/(h·ft·°F) = W/(m·K) × 0.5777893165. Factors last reviewed 2026-10-27.