AR Size Comparison & Dimension

See it before you buy it, at true, real-world scale.

AR Size Compare lets you place accurate, true-to-scale 3D models of real objects right in your room using your phone's camera. No guessing from photos, no tape measure, no surprises when the box arrives.

WILL IT FIT? FIND OUT INSTANTLY
Point your camera at a table, floor, or wall, tap to place, and see exactly how big something really is, in your actual space, at true scale.

COMPARE ANYTHING, SIDE BY SIDE
- Carry-on luggage: 3D AR box sizer for international carry-on & underseat limits
- Shoe sizes: see true-scale sole outlines on the floor (US, EU, UK, JP)
- Doors & windows: preview true-scale door and wall openings in AR
- TVs: see exactly how big that new screen will look on your wall
- Smartphones: compare screen size, weight, and dimensions
- Smartwatches: circular vs rectangular, case size, strap width
- Mattresses: Twin, Queen, King, and more, true to footprint
- Cars: compare vehicle silhouettes and dimensions
- Tires & wheels: diameter, speedo accuracy, sizing
- Balls: from golf balls to basketballs, true volume and scale
- Paper sizes: ISO (A4, A3) vs ANSI (Letter, Legal)
- Camera lenses: sensor size and aperture comparisons
- Pizza: is one large really better than two mediums?

CUSTOM SHAPES FOR ANYTHING ELSE
Got something not on the list? Enter your own dimensions and place it in AR as a:
- Box (length, width, height)
- Cylinder (cans, tubes, buckets)
- Sphere (balls, globes)
- Flat sheet (panels, boards, thin items)

BUILT-IN AR RULER & TAPE MEASURE
Measure real-world objects directly on screen or with your camera when you don't have a physical tape measure handy.

WHY PEOPLE USE THIS APP
- Flight & travel: test if your bag passes carry-on sizer limits before reaching the gate
- Shoe shopping: visualize true shoe length and footprint on your floor
- Home renovation: will a standard door or frame fit this wall space?
- Furniture shopping: will that sofa actually fit through the doorway?
- Electronics: is a 75" TV too big for this wall?
- Moving: will the new mattress fit the bedroom?
- Gifts: how big is this item in real life?

SIMPLE, PRIVATE, NO ACCOUNT NEEDED
No sign-up, no login, no personal data collected. Your comparison settings stay on your device. Switch between Metric and Imperial units anytime.

Free to use, supported by ads.

Note: AR previews are for size and fit reference. For critical measurements, confirm with a physical measuring tool.