Heat Flux Density conversion
1 watt/square meter (W/m²) equals 1 joule/square meter/second (J/(m²·s)). Enter any value below to convert from W/m² to J/(m²·s).
Enter a value and choose units. Results update instantly.
1 W/m² = 1 J/(m²·s)
| Unit | Value |
|---|---|
| Watt/square meter W/m² | 1 |
| Kilowatt/square meter kW/m² | 0.001 |
| Watt/square centimeter W/cm² | 0.0001 |
| Watt/square inch W/in² | 0.00064516 |
| Joule/square meter/second J/(m²·s) | 1 |
| Btu (IT)/square foot/second Btu/(ft²·s) | 0.0000880551 |
| Btu (IT)/square foot/minute Btu/(ft²·min) | 0.0052833055 |
| Btu (IT)/square foot/hour Btu/(ft²·h) | 0.3169983306 |
| Calorie (IT)/square centimeter/second cal/(cm²·s) | 0.0000238846 |
| Kilocalorie (IT)/square meter/hour kcal/(m²·h) | 0.8598452279 |
| Kilocalorie (IT)/square meter/second kcal/(m²·s) | 0.0002388459 |
Formula
Use this relationship for a direct conversion:
2 W/m² = 2 J/(m²·s).
SI relationships follow the cited reference. Conventional and domain-specific factors use the established ConvertWin factor inventory; verify safety-critical work against the governing standard.
Quick reference
| Watt/square meter (W/m²) | Joule/square meter/second (J/(m²·s)) |
|---|---|
| 0.01 | 0.01 |
| 0.1 | 0.1 |
| 1 | 1 |
| 2 | 2 |
| 5 | 5 |
| 10 | 10 |
| 25 | 25 |
| 50 | 50 |
| 100 | 100 |
| 1,000 | 1,000 |
From unit
Watt/square meter (W/m²) is the base unit of Heat Flux Density in the International System of Units (SI).
Symbol: W/m²
To unit
Joule/square meter/second (J/(m²·s)) is the base unit of Heat Flux Density in the International System of Units (SI).
Symbol: J/(m²·s)
Keep converting
Source
The SI framework is checked against NIST Guide for the Use of the International System of Units; conventional factors come from the extended factor inventory. Calculations use full internal precision before display rounding.
View the complete heat flux density converterQuestions
Use the formula J/(m²·s) = W/m² x 1. 1 watt/square meter (W/m²) equals 1 joule/square meter/second (J/(m²·s)).
SI relationships follow the cited reference. Conventional and domain-specific factors use the established ConvertWin factor inventory; verify safety-critical work against the governing standard.
