This comparison shows 21 objects drawn to scale. Drag the view to rotate it, or add your own items to the comparison.

| Object | As entered | Centimetres | Inches |
|---|---|---|---|
| Planck Length | 0 × 0 × 0 m | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| Bottom Quark | 0 × 0 × 0 m | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| 1 Attometer | 0 × 0 × 0 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| 10 Attometers | 0 × 0 × 0 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| 100 Attometers | 0 × 0 × 0 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| 1 Femtometer | 0 × 0 × 0 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| Proton | 0 × 0 × 0 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| Uranium Nucleus | 0 × 0 × 0 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| 10 Femtometers | 0 × 0 × 0 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| 100 Femtometers | 0 × 0 × 0 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| 1 Picometer | 0 × 0 × 0 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| 10 Picometers | 0.01 × 0.01 × 0.01 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| 100 Picometers | 0.1 × 0.1 × 0.1 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| Oxygen atom | 0.15 × 0.15 × 0.15 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| 1 Nanometer | 1 × 1 × 1 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| 10 Nanometers | 10.0 × 10.0 × 10.0 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| 100 Nanometers | 100 × 100 × 100 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| 1 Micrometer | 1 × 1 × 1 um | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| 10 micrometers | 10.0 × 10.0 × 10.0 um | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| 100 micrometers | 100 × 100 × 100 um | 0.01 × 0.01 × 0.01 cm | 0 × 0 × 0 in |
| 1 millimeter | 1 × 1 × 1 mm | 0.1 × 0.1 × 0.1 cm | 0.04 × 0.04 × 0.04 in |

| Object | Volume | vs smallest |
|---|---|---|
| Planck Length | 2.5 × 10−96 mm³ | 1× |
| Bottom Quark | 3.3 × 10−50 mm³ | >1,000,000× |
| 1 Attometer | 1 × 10−45 mm³ | >1,000,000× |
| 10 Attometers | 1 × 10−42 mm³ | >1,000,000× |
| 100 Attometers | 1 × 10−39 mm³ | >1,000,000× |
| 1 Femtometer | 1 × 10−36 mm³ | >1,000,000× |
| Proton | 5.9 × 10−37 mm³ | >1,000,000× |
| Uranium Nucleus | 3.4 × 10−33 mm³ | >1,000,000× |
| 10 Femtometers | 1 × 10−33 mm³ | >1,000,000× |
| 100 Femtometers | 1 × 10−30 mm³ | >1,000,000× |
| 1 Picometer | 1 × 10−27 mm³ | >1,000,000× |
| 10 Picometers | 1 × 10−24 mm³ | >1,000,000× |
| 100 Picometers | 1 × 10−21 mm³ | >1,000,000× |
| Oxygen atom | 3.1 × 10−21 mm³ | >1,000,000× |
| 1 Nanometer | 1 × 10−18 mm³ | >1,000,000× |
| 10 Nanometers | 1 × 10−15 mm³ | >1,000,000× |
| 100 Nanometers | 1 × 10−12 mm³ | >1,000,000× |
| 1 Micrometer | 1 × 10−9 mm³ | >1,000,000× |
| 10 micrometers | 1 × 10−6 mm³ | >1,000,000× |
| 100 micrometers | 1 × 10−3 mm³ | >1,000,000× |
| 1 millimeter | 1 mm³ | >1,000,000× |
* Height × width × depth of the box each object fits in, not the object's own volume. Multiples are against the smallest box here, Planck Length. Anything beyond a million times bigger is shown as >1,000,000×.