Here are the recommended American Flag sizes for standard flag poles:
| Flagpole | Flag |
| 20’ | 3’x5’, 4’x6’ |
| 25’ | 4’x6’, 5’x8’ |
| 30’ | 5’x8’, 6’x10’ |
| 40’-45’ | 6’x10’-8’x12’ |
| 50’ | 8’x12’-10’x15’ |
| 60’-65’ | 10’x15’-10’x19’ |
| 70’-80’ | 10’x19’-12’x18’ |
| 90’-100’ | 20’x30’-30’x60’ |
The American Flag's length should be about ¼ the height of the pole.