Kilowatts per square meter to Btu per hour square foot Converter
Quick answer: To convert kilowatts per square meter to btu per hour square foot, multiply by 316.9983. For example, 10 kW/m² is 3,169.983 Btu/(h·ft²). One kilowatt per square meter equals 316.9983 Btu/(h·ft²).
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Use the Kilowatts per square meter to Btu per hour square foot Converter
Kilowatts per square meter to Btu per hour square foot formula and what each symbol means
Btu/(h·ft²) = kW/m² × 316.9983
| Symbol | Meaning |
|---|---|
| kW/m² | Kilowatt per square meter |
| Btu/(h·ft²) | Btu per hour square foot |
Kilowatts per square meter to Btu per hour square foot examples
1 kW/m²
1 kW/m² × 316.9983 = 316.9983 Btu/(h·ft²).
10 kW/m²
10 kW/m² × 316.9983 = 3,169.983 Btu/(h·ft²).
100 kW/m²
100 kW/m² × 316.9983 = 31,699.83 Btu/(h·ft²).
Kilowatts per square meter compared with Btu per hour square foot
One kW/m² is 317 times as large as one Btu/(h·ft²), so your number gets bigger when you convert kilowatts per square meter to btu per hour square foot and smaller when you convert back. If the answer is not larger than what you typed, you divided instead of multiplying.
About kilowatts per square meter and btu per hour square foot
Kilowatt per square meter (kW/m²): 1,000 W/m². Btu per hour square foot (Btu/(h·ft²)): A US customary unit, about 3.1546 W/m².
How to calculate Kilowatts per square meter to Btu per hour square foot step by step
- Enter the value in kW/m² (the starting unit).
- Multiply by 316.9983, because 1 kW/m² = 316.9983 Btu/(h·ft²).
- The product is the value in Btu/(h·ft²). To go back, divide by 316.9983 or multiply by 0.003154591.
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How to read your Kilowatts per square meter to Btu per hour square foot result
Quick estimate: multiply by about 320 to get btu per hour square foot from kilowatts per square meter; this is within 1.0% 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.
| KILOWATTS PER SQUARE METER | BTU PER HOUR SQUARE FOOT |
|---|---|
| 1 | 316.9983 |
| 2 | 633.9967 |
| 5 | 1,584.992 |
| 10 | 3,169.983 |
| 20 | 6,339.967 |
| 50 | 15,849.92 |
| 100 | 31,699.83 |
| 1,000 | 316,998.3 |
Btu per hour square foot to Kilowatts per square meter: quick table
| BTU PER HOUR SQUARE FOOT | KILOWATTS PER SQUARE METER |
|---|---|
| 1 | 0.003154591 |
| 5 | 0.01577295 |
| 10 | 0.03154591 |
| 25 | 0.07886477 |
| 50 | 0.1577295 |
| 100 | 0.3154591 |
| 250 | 0.7886477 |
| 500 | 1.577295 |
Common mistakes when calculating Kilowatts per square meter to Btu per hour square foot
- Mixing W/cm² with W/m²: the first is 10,000 times larger.
- Dividing when you should multiply: from kW/m² to Btu/(h·ft²) multiply by 316.9983; from Btu/(h·ft²) to kW/m² divide by 316.9983.
Kilowatts per square meter to Btu per hour square foot FAQ
How many Btu/(h·ft²) are in 1 kW/m²?
1 kW/m² equals 316.9983 Btu/(h·ft²).
How many kW/m² are in 1 Btu/(h·ft²)?
1 Btu/(h·ft²) equals 0.003154591 kW/m².
Is 1 kW/m² = 316.9983 Btu/(h·ft²) an exact conversion?
The factor is shown rounded to 7 significant figures (316.9983). The calculator above uses more digits.
What is a kilowatt per square meter (kW/m²)?
1,000 W/m².
How can I estimate kilowatts per square meter to btu per hour square foot in my head?
Quick estimate: multiply by about 320 to get btu per hour square foot from kilowatts per square meter; this is within 1.0% of the exact factor.
What is 25 kW/m² in btu per hour square foot?
25 kW/m² = 7,924.958 Btu/(h·ft²) (since 25 × 316.9983).
What is 80 kW/m² in btu per hour square foot?
80 kW/m² = 25,359.87 Btu/(h·ft²) (since 80 × 316.9983).
What is 500 kW/m² in btu per hour square foot?
500 kW/m² = 158,499.2 Btu/(h·ft²) (since 500 × 316.9983).
How many decimals should I keep when converting kW/m² to Btu/(h·ft²)?
Match the precision of your original measurement. For example, 3,169.983 Btu/(h·ft²) rounds to 3,170 Btu/(h·ft²) 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)