Convert Amperes per square foot to Amperes per square inch
Convert Amperes per square foot (A/ft²) to Amperes per square inch (A/in²) instantly and accurately.
Conversion Formula
A/in² = A/ft² × 0.006944444444
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.
About Amperes per square inch
The ampere per square inch (A/in²) equals 1 / (0.0254)² A/m² ≈ 1550 A/m², used in US power semiconductor datasheets and electroforming specifications. JEDEC JESD22 and IPC standards specify maximum allowable current density in bond wires and copper interconnects in A/in²; electroforming of micro-components targets 0.5-5 A/in². 1 A/in² ≈ 1550 A/m² = 0.155 A/cm².
Quick Reference Table
| Amperes per square foot (A/ft²) | Amperes per square inch (A/in²) |
|---|---|
| 1 A/ft² | 0.00694444 A/in² |
| 2 A/ft² | 0.0138889 A/in² |
| 5 A/ft² | 0.0347222 A/in² |
| 10 A/ft² | 0.0694444 A/in² |
| 25 A/ft² | 0.173611 A/in² |
| 50 A/ft² | 0.347222 A/in² |
| 100 A/ft² | 0.694444 A/in² |