Is Nintendo 3DS XL the Same Size as DSi XL? No, 3DS XL Is Slightly Larger

No. The Nintendo 3DS XL is slightly larger than the DSi XL:

• 3DS XL: 165 mm × 93.5 mm (6.5″ × 3.7″)
• DSi XL: 160 mm × 91 mm (6.3″ × 3.6″)

The difference is noticeable in hand, and the 3DS XL also features larger screens.