| ARJ21-700 | ARJ21-700ER | ARJ21-900 | ARJ21-900ER | |
| Dimensions | ||||
| Length (m) | 33.5 | 33.5 | 36.4 | 36.4 |
| Wingspan (m) | 27.3 | 27.3 | 27.3 | 27.3 |
| Height (m) | 8.4 | 8.4 | 8.4 | 8.4 |
| Wing area (m2) | 79.9 | 79.9 | 79.9 | 79.9 |
| Cabin Data | ||||
| Passengers (1-class) | 90 | 90 | 105 | 105 |
| Passengers (2-class) | 78 | 78 | 98 | 98 |
| Cabin width (m) | 3.1 | 3.1 | 3.1 | 3.1 |
| Cabin height (m) | 2.0 | 2.0 | 2.0 | 2.0 |
| Aisle width (m) | 0.48 | 0.48 | 0.48 | 0.48 |
| Seat width (m) | 0.45 | 0.45 | 0.45 | 0.45 |
