Visual Tool

2D Size Comparator

Compare two rectangular objects with true-to-scale overlays, side-by-side views, and instant area ratios. Handy for visualising paper sizes, device screens, photos, floor plans, and more.

Objects

Enter dimensions using the same units (millimetres, inches, metres, etc.). The visualisation uses the largest side to determine scale.

Object A
Object B

Tips

  • Use the same unit for both objects to keep the comparison accurate.
  • Click “Swap A & B” to quickly compare area ratios from the opposite perspective.
  • Enable diagonals to compare aspect ratios at a glance.
  • Hover objects in the visual to highlight a single rectangle.

Overlay comparison

Area of A
Area of B
A vs B
Diagonal A
Diagonal B
Aspect ratios

Side-by-side

Object A

Object B