Btu per hour square foot to Watts per square centimeter Converter
Quick answer: To convert btu per hour square foot to watts per square centimeter, multiply by 0.0003154591. For example, 10 Btu/(h·ft²) is 0.003154591 W/cm². One btu per hour square foot equals 0.0003154591 W/cm².
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Use the Btu per hour square foot to Watts per square centimeter Converter
Btu per hour square foot to Watts per square centimeter formula and what each symbol means
W/cm² = Btu/(h·ft²) × 0.0003154591
| Symbol | Meaning |
|---|---|
| Btu/(h·ft²) | Btu per hour square foot |
| W/cm² | Watt per square centimeter |
Btu per hour square foot to Watts per square centimeter examples
1 Btu/(h·ft²)
1 Btu/(h·ft²) × 0.0003154591 = 0.0003154591 W/cm².
10 Btu/(h·ft²)
10 Btu/(h·ft²) × 0.0003154591 = 0.003154591 W/cm².
100 Btu/(h·ft²)
100 Btu/(h·ft²) × 0.0003154591 = 0.03154591 W/cm².
Btu per hour square foot compared with Watts per square centimeter
One W/cm² is 3,170 times as large as one Btu/(h·ft²), so your number gets smaller when you convert btu per hour square foot to watts per square centimeter 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 watts per square centimeter
Btu per hour square foot (Btu/(h·ft²)): A US customary unit, about 3.1546 W/m². Watt per square centimeter (W/cm²): 10,000 W/m².
How to calculate Btu per hour square foot to Watts per square centimeter step by step
- Enter the value in Btu/(h·ft²) (the starting unit).
- Multiply by 0.0003154591, because 1 Btu/(h·ft²) = 0.0003154591 W/cm².
- The product is the value in W/cm². To go back, divide by 0.0003154591 or multiply by 3,169.983.
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How to read your Btu per hour square foot to Watts per square centimeter result
Quick estimate: multiply by about 0.00032 to get watts per square centimeter from btu per hour square foot; this is within 1.5% of the exact factor. Sunlight above the atmosphere averages about 1,361 W/m², and 1 Btu/(h·ft²) is about 3.1546 W/m².
| BTU PER HOUR SQUARE FOOT | WATTS PER SQUARE CENTIMETER |
|---|---|
| 1 | 0.0003154591 |
| 2 | 0.0006309181 |
| 5 | 0.001577295 |
| 10 | 0.003154591 |
| 20 | 0.006309181 |
| 50 | 0.01577295 |
| 100 | 0.03154591 |
| 1,000 | 0.3154591 |
Watts per square centimeter to Btu per hour square foot: quick table
| WATTS PER SQUARE CENTIMETER | BTU PER HOUR SQUARE FOOT |
|---|---|
| 1 | 3,169.983 |
| 5 | 15,849.92 |
| 10 | 31,699.83 |
| 25 | 79,249.58 |
| 50 | 158,499.2 |
| 100 | 316,998.3 |
| 250 | 792,495.8 |
| 500 | 1,584,992 |
Common mistakes when calculating Btu per hour square foot to Watts per square centimeter
- Confusing heat flux (W/m²) with total heat flow (W).
- Dividing when you should multiply: from Btu/(h·ft²) to W/cm² multiply by 0.0003154591; from W/cm² to Btu/(h·ft²) divide by 0.0003154591.
Btu per hour square foot to Watts per square centimeter FAQ
How many W/cm² are in 1 Btu/(h·ft²)?
1 Btu/(h·ft²) equals 0.0003154591 W/cm².
How many Btu/(h·ft²) are in 1 W/cm²?
1 W/cm² equals 3,169.983 Btu/(h·ft²).
Is 1 Btu/(h·ft²) = 0.0003154591 W/cm² an exact conversion?
The factor is shown rounded to 7 significant figures (0.0003154591). The calculator above uses more digits.
What is a watt per square centimeter (W/cm²)?
10,000 W/m².
How can I estimate btu per hour square foot to watts per square centimeter in my head?
Quick estimate: multiply by about 0.00032 to get watts per square centimeter from btu per hour square foot; this is within 1.5% of the exact factor.
What is 0.5 Btu/(h·ft²) in watts per square centimeter?
0.5 Btu/(h·ft²) = 0.0001577295 W/cm² (since 0.5 × 0.0003154591).
What is 25 Btu/(h·ft²) in watts per square centimeter?
25 Btu/(h·ft²) = 0.007886477 W/cm² (since 25 × 0.0003154591).
What is 80 Btu/(h·ft²) in watts per square centimeter?
80 Btu/(h·ft²) = 0.02523673 W/cm² (since 80 × 0.0003154591).
How many decimals should I keep when converting Btu/(h·ft²) to W/cm²?
Match the precision of your original measurement. For example, 0.003154591 W/cm² rounds to 0.00315 W/cm² 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)