This comparison shows 17 objects drawn to scale. Drag the view to rotate it, or add your own items to the comparison.

| Object | As entered | Centimetres | Inches |
|---|---|---|---|
| Astatine Nucleus | 0 × 0 × 0 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| Actinium Nucleus | 0 × 0 × 0 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| Americium Nucleus | 0 × 0 × 0 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| Berkelium Nucleus | 0 × 0 × 0 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| Atom | 0 × 0 × 0 cm | 0 × 0 × 0 in | |
| Porcine circovirus aka smallest virus | 17.0 × 17.0 × 17.0 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| Porcine circovirus | 19.0 × 15.0 × 17.0 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| Covid19 virus | 90.0 × 90.0 × 90.0 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| HIV virus | 100 × 100 × 100 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| Small bacteria (Mycoplasma) | 200 × 40.0 × 40.0 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| Megavirus | 440 × 440 × 440 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| Giant virus (Mimivirus) | 700 × 700 × 700 nm | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| Bacteria | 1 × 1 × 1 um | 0 × 0 × 0 cm | 0 × 0 × 0 in |
| Oxygen Molecule | 152 × 152 × 152 um | 0.02 × 0.02 × 0.02 cm | 0.01 × 0.01 × 0.01 in |
| Carbon Dioxide Molecule | 232 × 232 × 232 um | 0.02 × 0.02 × 0.02 cm | 0.01 × 0.01 × 0.01 in |
| Grain of salt/sand | 500 × 500 × 500 um | 0.05 × 0.05 × 0.05 cm | 0.02 × 0.02 × 0.02 in |
| Grain of Rice | 2 × 2 × 2 mm | 0.2 × 0.2 × 0.2 cm | 0.08 × 0.08 × 0.08 in |

| Object | Volume | vs smallest |
|---|---|---|
| Astatine Nucleus | 2.3 × 10−33 mm³ | 1× |
| Actinium Nucleus | 2.6 × 10−33 mm³ | 1.1× |
| Americium Nucleus | 2.9 × 10−33 mm³ | 1.3× |
| Berkelium Nucleus | 3 × 10−33 mm³ | 1.3× |
| Atom | — | — |
| Porcine circovirus aka smallest virus | 4.9 × 10−15 mm³ | >1,000,000× |
| Porcine circovirus | 4.8 × 10−15 mm³ | >1,000,000× |
| Covid19 virus | 7.3 × 10−13 mm³ | >1,000,000× |
| HIV virus | 1 × 10−12 mm³ | >1,000,000× |
| Small bacteria (Mycoplasma) | 3.2 × 10−13 mm³ | >1,000,000× |
| Megavirus | 8.5 × 10−11 mm³ | >1,000,000× |
| Giant virus (Mimivirus) | 3.4 × 10−10 mm³ | >1,000,000× |
| Bacteria | 1 × 10−9 mm³ | >1,000,000× |
| Oxygen Molecule | 3.5 × 10−3 mm³ | >1,000,000× |
| Carbon Dioxide Molecule | 1.2 × 10−2 mm³ | >1,000,000× |
| Grain of salt/sand | 0.13 mm³ | >1,000,000× |
| Grain of Rice | 8 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, Astatine Nucleus. Anything beyond a million times bigger is shown as >1,000,000×.