iPad Pro 12.9" vs 11": screen size and portability trade-off.
Verdict
12.9" gives you a laptop-like canvas and better split-view; 11" is easier to hold and carry. Both are powerful. Prefer 12.9" for desk-first use; prefer 11" if you use the tablet in hand often or travel a lot.
Physical Size Comparison
Relative physical size of each display at scale (same units as your selection).
iPad Pro 12.9"
iPad Pro 11"
iPad Pro 12.9"
in
DIAG12.9 in
W×H10.3 × 7.7 in
cm
DIAG32.8 cm
W×H26.2 × 19.7 cm
iPad Pro 11"
in
DIAG11.0 in
W×H8.8 × 6.6 in
cm
DIAG27.9 cm
W×H22.4 × 16.8 cm
Pixel Workspace Comparison
Effective pixel workspace with 1x/2x scaling. Shows how much logical space you get on each display.