Btu per hour square foot to Kilowatts per square meter Converter
Quick answer: To convert btu per hour square foot to kilowatts per square meter, multiply by 0.003154591. For example, 10 Btu/(h·ft²) is 0.03154591 kW/m². One btu per hour square foot equals 0.003154591 kW/m².
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Use the Btu per hour square foot to Kilowatts per square meter Converter
Btu per hour square foot to Kilowatts per square meter formula and what each symbol means
kW/m² = Btu/(h·ft²) × 0.003154591
| Symbol | Meaning |
|---|---|
| Btu/(h·ft²) | Btu per hour square foot |
| kW/m² | Kilowatt per square meter |
Btu per hour square foot to Kilowatts per square meter examples
1 Btu/(h·ft²)
1 Btu/(h·ft²) × 0.003154591 = 0.003154591 kW/m².
10 Btu/(h·ft²)
10 Btu/(h·ft²) × 0.003154591 = 0.03154591 kW/m².
100 Btu/(h·ft²)
100 Btu/(h·ft²) × 0.003154591 = 0.3154591 kW/m².
Btu per hour square foot compared with Kilowatts per square meter
One kW/m² is 317 times as large as one Btu/(h·ft²), so your number gets smaller when you convert btu per hour square foot to kilowatts per square meter and bigger when you convert back. If the answer is not smaller than what you typed, you multiplied instead of dividing.
About btu per hour square foot and kilowatts per square meter
Btu per hour square foot (Btu/(h·ft²)): A US customary unit, about 3.1546 W/m². Kilowatt per square meter (kW/m²): 1,000 W/m².
How to calculate Btu per hour square foot to Kilowatts per square meter step by step
- Enter the value in Btu/(h·ft²) (the starting unit).
- Multiply by 0.003154591, because 1 Btu/(h·ft²) = 0.003154591 kW/m².
- The product is the value in kW/m². To go back, divide by 0.003154591 or multiply by 316.9983.
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How to read your Btu per hour square foot to Kilowatts per square meter result
Quick estimate: multiply by about 0.0032 to get kilowatts per square meter from btu per hour square foot; this is within 1.5% of the exact factor. The SI unit is watt per square metre.
| BTU PER HOUR SQUARE FOOT | KILOWATTS PER SQUARE METER |
|---|---|
| 1 | 0.003154591 |
| 2 | 0.006309181 |
| 5 | 0.01577295 |
| 10 | 0.03154591 |
| 20 | 0.06309181 |
| 50 | 0.1577295 |
| 100 | 0.3154591 |
| 1,000 | 3.154591 |
Kilowatts per square meter to Btu per hour square foot: quick table
| KILOWATTS PER SQUARE METER | BTU PER HOUR SQUARE FOOT |
|---|---|
| 1 | 316.9983 |
| 5 | 1,584.992 |
| 10 | 3,169.983 |
| 25 | 7,924.958 |
| 50 | 15,849.92 |
| 100 | 31,699.83 |
| 250 | 79,249.58 |
| 500 | 158,499.2 |
Common mistakes when calculating Btu per hour square foot to Kilowatts per square meter
- Mixing W/cm² with W/m²: the first is 10,000 times larger.
- Dividing when you should multiply: from Btu/(h·ft²) to kW/m² multiply by 0.003154591; from kW/m² to Btu/(h·ft²) divide by 0.003154591.
Btu per hour square foot to Kilowatts per square meter FAQ
How many kW/m² are in 1 Btu/(h·ft²)?
1 Btu/(h·ft²) equals 0.003154591 kW/m².
How many Btu/(h·ft²) are in 1 kW/m²?
1 kW/m² equals 316.9983 Btu/(h·ft²).
Is 1 Btu/(h·ft²) = 0.003154591 kW/m² an exact conversion?
The factor is shown rounded to 7 significant figures (0.003154591). The calculator above uses more digits.
What is a btu per hour square foot (Btu/(h·ft²))?
A US customary unit, about 3.1546 W/m².
How can I estimate btu per hour square foot to kilowatts per square meter in my head?
Quick estimate: multiply by about 0.0032 to get kilowatts per square meter from btu per hour square foot; this is within 1.5% of the exact factor.
What is 250 Btu/(h·ft²) in kilowatts per square meter?
250 Btu/(h·ft²) = 0.7886477 kW/m² (since 250 × 0.003154591).
What is 7 Btu/(h·ft²) in kilowatts per square meter?
7 Btu/(h·ft²) = 0.02208214 kW/m² (since 7 × 0.003154591).
What is 40 Btu/(h·ft²) in kilowatts per square meter?
40 Btu/(h·ft²) = 0.1261836 kW/m² (since 40 × 0.003154591).
How many decimals should I keep when converting Btu/(h·ft²) to kW/m²?
Match the precision of your original measurement. For example, 0.03154591 kW/m² rounds to 0.0315 kW/m² at 3 significant figures; keep more digits only for engineering or scientific work.
More in Heat Flux Density converters
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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)