How to convert heat flux density
1 × 1 ÷ 0.001 = 1000 Milliwatts per square metre.
Multiply your measurement by the factor for the input unit, then divide by the factor for the output unit. Every factor below is expressed in watts per square metre per one unit. For example, 1 Watts per square metre equals 1000 Milliwatts per square metre.
25 supported units and their factors
| Unit | watts per square metre per unit |
|---|---|
| Watts per square metre | 1 |
| Milliwatts per square metre | 0.001 |
| Kilowatts per square metre | 1000 |
| Microwatts per square metre | 1e-06 |
| Megawatts per square metre | 1000000 |
| Centiwatts per square metre | 0.01 |
| Nanowatts per square metre | 1e-09 |
| Gigawatts per square metre | 1000000000 |
| Deciwatts per square metre | 0.1 |
| Decawatts per square metre | 10 |
| Hectowatts per square metre | 100 |
| Picowatts per square metre | 1e-12 |
| Terawatts per square metre | 1e+12 |
| Femtowatts per square metre | 1e-15 |
| Petawatts per square metre | 1e+15 |
| Attowatts per square metre | 1e-18 |
| Exawatts per square metre | 1e+18 |
| Zeptowatts per square metre | 1e-21 |
| Zettawatts per square metre | 1e+21 |
| Yoctowatts per square metre | 1e-24 |
| Yottawatts per square metre | 1e+24 |
| Rontowatts per square metre | 1e-27 |
| Ronnawatts per square metre | 1e+27 |
| Quectowatts per square metre | 1e-30 |
| Quettawatts per square metre | 1e+30 |
Accuracy and scope
The calculator uses fixed measurement relationships and SI decimal prefixes, including the 2022 ronto, quecto, ronna and quetta prefixes. Conventional units are identified separately when available. Results are rounded for display to 12 significant digits; very large and small values may lose precision in ordinary browser floating-point arithmetic. This converter changes units of the same physical quantity and does not change the measured quantity itself.