Scale Explorer

Category

Microscopic

Atoms, DNA, viruses, cells and grains of sand: things far too small to see, drawn next to things you know.

All microscopic at the same scale

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Hydrogen atom, DNA double helix, Coronavirus (SARS-CoV-2), E. coli bacterium, Red blood cell, Pollen grain, Human egg cell, Paramecium, House dust mite, Human hair (width), Grain of sand, Tardigrade drawn to the same scaleHydrogen atom: bohr radius 0.0000000000529177210544 m (too small to see at this scale). DNA double helix: diameter ≈ 2 nm (too small to see at this scale). Coronavirus (SARS-CoV-2): particle diameter 60–140 nm (too small to see at this scale). E. coli bacterium: length ≈ 2 µm (too small to see at this scale). Red blood cell: diameter 7.5–8.7 µm (too small to see at this scale). Pollen grain: diameter (hydrated grain) 16–20 µm. Human egg cell: diameter at ovulation 110–120 µm. Paramecium: length 0.05–0.32 mm. House dust mite: adult body length ≈ 420 µm. Human hair (width): average diameter ≈ 70 µm. Grain of sand: grain diameter (sand size class) 0.0625–2 mm. Tardigrade: body length (range across species) 50–2,100 µm.Hydrogen atom: 0.0000000000529177210544 m (too small to see at this scale)DNA double helix: ≈ 2 nm (too small to see at this scale)Coronavirus (SARS-CoV-2): 60–140 nm (too small to see at this scale)E. coli bacterium: ≈ 2 µm (too small to see at this scale)Red blood cell: 7.5–8.7 µm (too small to see at this scale)Pollen grain: 16–20 µmHuman egg cell: 110–120 µmParamecium: 0.05–0.32 mmHouse dust mite: ≈ 420 µmHuman hair (width): ≈ 70 µmGrain of sand: 0.0625–2 mmTardigrade: 50–2,100 µmGrain of sand0.0625–2 mmTardigrade50–2,100 µmHuman hair (width)≈ 70 µmHouse dust mite≈ 420 µmHydrogen atom0.0000000000529177210544 m · too small to seeDNA double helix≈ 2 nm · too small to seeCoronavirus (SARS-CoV-2)60–140 nm · too small to seeE. coli bacterium≈ 2 µm · too small to seeRed blood cell7.5–8.7 µm · too small to seeHuman egg cell110–120 µmParamecium0.05–0.32 mmPollen grain16–20 µm

Hydrogen atom, DNA double helix, Coronavirus (SARS-CoV-2), E. coli bacterium and Red blood cell are too small to see at this scale and are marked with ▲.

Everything is drawn to the same scale, standing on the same ground line. Silhouettes are simplified outlines scaled to the measured dimension. A faded outline shows the top of a size range.

Zoomed in 580×: Hydrogen atom, DNA double helix, Coronavirus (SARS-CoV-2), E. coli bacterium, Red blood cell

This view uses a different scale from the one above: everything here is drawn about 580 times larger.

Hydrogen atom, DNA double helix, Coronavirus (SARS-CoV-2), E. coli bacterium, Red blood cell drawn to the same scaleHydrogen atom: bohr radius 0.0000000000529177210544 m (too small to see at this scale). DNA double helix: diameter ≈ 2 nm (too small to see at this scale). Coronavirus (SARS-CoV-2): particle diameter 60–140 nm. E. coli bacterium: length ≈ 2 µm. Red blood cell: diameter 7.5–8.7 µm.Hydrogen atom: 0.0000000000529177210544 m (too small to see at this scale)DNA double helix: ≈ 2 nm (too small to see at this scale)Coronavirus (SARS-CoV-2): 60–140 nmE. coli bacterium: ≈ 2 µmRed blood cell: 7.5–8.7 µmRed blood cell7.5–8.7 µmE. coli bacterium≈ 2 µmHydrogen atom0.0000000000529177210544 m · too small to seeDNA double helix≈ 2 nm · too small to seeCoronavirus (SARS-CoV-2)60–140 nm

Hydrogen atom and DNA double helix are too small to see at this scale and are marked with ▲.

Everything is drawn to the same scale, standing on the same ground line. Silhouettes are simplified outlines scaled to the measured dimension. A faded outline shows the top of a size range.

Zoomed in 620×: Hydrogen atom, DNA double helix

This view uses a different scale from the one above: everything here is drawn about 620 times larger.

Hydrogen atom, DNA double helix drawn to the same scaleHydrogen atom: bohr radius 0.0000000000529177210544 m. DNA double helix: diameter ≈ 2 nm.Hydrogen atom: 0.0000000000529177210544 mDNA double helix: ≈ 2 nmDNA double helix≈ 2 nmHydrogen atom0.0000000000529177210544 m
Everything is drawn to the same scale, standing on the same ground line. Silhouettes are simplified outlines scaled to the measured dimension.

Microscopic from smallest to largest