Convert Amperes per square metre to Amperes per square foot
Convert Amperes per square metre (A/m²) to Amperes per square foot (A/ft²) instantly and accurately.
Conversion Formula
A/ft² = A/m² × 0.09290304
About Amperes per square metre
The ampere per square metre (A/m²) is the SI coherent unit of current density, defined as 1 A flowing through 1 m² cross-section. Electrolytic copper plating baths operate at 200-500 A/m²; photovoltaic short-circuit current density of silicon solar cells at AM 1.5G is 35-42 A/m²; cathodic protection of bare steel in soil applies 10-50 A/m². 1 A/m² = 0.1 mA/cm².
About Amperes per square foot
The ampere per square foot (A/ft²) equals 1 / (0.3048)² A/m² ≈ 10.764 A/m², used in US electroplating and grounding standards. ASTM B734 copper plating specifications cite current density in A/ft²; IEEE Std 80 specifies grounding grid design current density in A/ft² when ground fault current is distributed across the soil surface. 1 A/ft² ≈ 10.764 A/m².
Quick Reference Table
| Amperes per square metre (A/m²) | Amperes per square foot (A/ft²) |
|---|---|
| 1 A/m² | 0.092903 A/ft² |
| 2 A/m² | 0.185806 A/ft² |
| 5 A/m² | 0.464515 A/ft² |
| 10 A/m² | 0.92903 A/ft² |
| 25 A/m² | 2.32258 A/ft² |
| 50 A/m² | 4.64515 A/ft² |
| 100 A/m² | 9.2903 A/ft² |