Btu per hour square foot °F to Watts per square meter kelvin Converter
Quick answer: To convert Btu per hour square foot °F to watts per square meter kelvin, multiply by 5.678263. For example, 10 Btu/(h·ft²·°F) is 56.78263 W/(m²·K). One btu per hour square foot °f equals 5.678263 W/(m²·K).
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Use the Btu per hour square foot °F to Watts per square meter kelvin Converter
Btu per hour square foot °F to Watts per square meter kelvin formula and what each symbol means
W/(m²·K) = Btu/(h·ft²·°F) × 5.678263
| Symbol | Meaning |
|---|---|
| Btu/(h·ft²·°F) | Btu per hour square foot °F |
| W/(m²·K) | Watt per square meter kelvin |
Btu per hour square foot °F to Watts per square meter kelvin examples
1 Btu/(h·ft²·°F)
1 Btu/(h·ft²·°F) × 5.678263 = 5.678263 W/(m²·K).
10 Btu/(h·ft²·°F)
10 Btu/(h·ft²·°F) × 5.678263 = 56.78263 W/(m²·K).
100 Btu/(h·ft²·°F)
100 Btu/(h·ft²·°F) × 5.678263 = 567.8263 W/(m²·K).
Btu per hour square foot °F compared with Watts per square meter kelvin
One Btu/(h·ft²·°F) is 5.678 times as large as one W/(m²·K), so your number gets bigger when you convert Btu per hour square foot °F to watts per square meter kelvin and smaller when you convert back. If the answer is not larger than what you typed, you divided instead of multiplying.
About Btu per hour square foot °F and watts per square meter kelvin
Btu per hour square foot °F (Btu/(h·ft²·°F)): A US customary unit, about 5.6783 W/(m²·K). Watt per square meter kelvin (W/(m²·K)): The SI unit of heat transfer coefficient.
How to calculate Btu per hour square foot °F to Watts per square meter kelvin step by step
- Enter the value in Btu/(h·ft²·°F) (the starting unit).
- Multiply by 5.678263, because 1 Btu/(h·ft²·°F) = 5.678263 W/(m²·K).
- The product is the value in W/(m²·K). To go back, divide by 5.678263 or multiply by 0.1761102.
Popular heat transfer coefficient conversions
How to read your Btu per hour square foot °F to Watts per square meter kelvin result
Quick estimate: multiply by about 5.7 to get watts per square meter kelvin from Btu per hour square foot °F; this is within 0.4% of the exact factor. The heat transfer coefficient is heat flow per unit area per degree of temperature difference.
| BTU PER HOUR SQUARE FOOT °F | WATTS PER SQUARE METER KELVIN |
|---|---|
| 1 | 5.678263 |
| 2 | 11.35653 |
| 5 | 28.39132 |
| 10 | 56.78263 |
| 20 | 113.5653 |
| 50 | 283.9132 |
| 100 | 567.8263 |
| 1,000 | 5,678.263 |
Watts per square meter kelvin to Btu per hour square foot °F: quick table
| WATTS PER SQUARE METER KELVIN | BTU PER HOUR SQUARE FOOT °F |
|---|---|
| 1 | 0.1761102 |
| 5 | 0.8805509 |
| 10 | 1.761102 |
| 25 | 4.402755 |
| 50 | 8.805509 |
| 100 | 17.61102 |
| 250 | 44.02755 |
| 500 | 88.05509 |
Common mistakes when calculating Btu per hour square foot °F to Watts per square meter kelvin
- Forgetting that a Celsius degree and a kelvin are the same size.
- Dividing when you should multiply: from Btu/(h·ft²·°F) to W/(m²·K) multiply by 5.678263; from W/(m²·K) to Btu/(h·ft²·°F) divide by 5.678263.
Btu per hour square foot °F to Watts per square meter kelvin FAQ
How many W/(m²·K) are in 1 Btu/(h·ft²·°F)?
1 Btu/(h·ft²·°F) equals 5.678263 W/(m²·K).
How many Btu/(h·ft²·°F) are in 1 W/(m²·K)?
1 W/(m²·K) equals 0.1761102 Btu/(h·ft²·°F).
Is 1 Btu/(h·ft²·°F) = 5.678263 W/(m²·K) an exact conversion?
The factor is shown rounded to 7 significant figures (5.678263). The calculator above uses more digits.
What is a watt per square meter kelvin (W/(m²·K))?
The SI unit of heat transfer coefficient.
How can I estimate Btu per hour square foot °F to watts per square meter kelvin in my head?
Quick estimate: multiply by about 5.7 to get watts per square meter kelvin from Btu per hour square foot °F; this is within 0.4% of the exact factor.
What is 7 Btu/(h·ft²·°F) in watts per square meter kelvin?
7 Btu/(h·ft²·°F) = 39.74784 W/(m²·K) (since 7 × 5.678263).
What is 40 Btu/(h·ft²·°F) in watts per square meter kelvin?
40 Btu/(h·ft²·°F) = 227.1305 W/(m²·K) (since 40 × 5.678263).
What is 200 Btu/(h·ft²·°F) in watts per square meter kelvin?
200 Btu/(h·ft²·°F) = 1,135.653 W/(m²·K) (since 200 × 5.678263).
How many decimals should I keep when converting Btu/(h·ft²·°F) to W/(m²·K)?
Match the precision of your original measurement. For example, 56.78263 W/(m²·K) rounds to 56.8 W/(m²·K) at 3 significant figures; keep more digits only for engineering or scientific work.
Method, review and disclaimer
Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors, BIPM: the International System of Units (SI)