This comparison shows 2 objects drawn to scale. Drag the view to rotate it, or add your own items to the comparison.

| Object | As entered | Centimetres | Inches |
|---|---|---|---|
| Keychain | 99.0 × 1 × 99.0 mm | 9.9 × 0.1 × 9.9 cm | 3.9 × 0.04 × 3.9 in |
| Ruler | 12.0 × 1 × 1 in | 30.5 × 2.54 × 2.54 cm | 12.0 × 1 × 1 in |

| Object | Volume | vs smallest |
|---|---|---|
| Keychain | 9.8 cm³ | 1× |
| Ruler | 197 cm³ | 20× |
* Height × width × depth of the box each object fits in, not the object's own volume. Multiples are against the smallest box here, Keychain.