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Scale of the Universe

This site is an interactive scroll-zoom across 62 orders of magnitude: from the Planck length (10⁻³⁵ m) to the diameter of the observable Universe (≈10²⁷ m). Enable JavaScript to start the interactive experience. Below is a list of key objects.

Planck length — 1.6×10⁻³⁵ m. The smallest meaningful length scale.
Quark — <10⁻¹⁹ m. A point-like fundamental particle.
Electron — <10⁻¹⁸ m. Considered point-like.
Proton — 1.7×10⁻¹⁵ m. Made of three quarks.
Hydrogen atom — 1.06×10⁻¹⁰ m. The simplest, most abundant atom.
DNA — 2 nm wide. Unwound, one human's DNA reaches the Sun and back 67 times.
3 nm transistor — modern silicon chip.
SARS-CoV-2 — 120 nm spiked sphere.
E. coli bacterium — 2 μm. ~10¹³ bacteria live in your body.
Red blood cell — 8 μm. ~25 trillion in your blood.
Human cell — 20 μm. ~37 trillion cells in the body.
Human hair — 70 μm thick.
Grain of sand — 0.5 mm.
Ant — 5 mm.
Human — 1.7 m. You are nearly in the middle between a quark and the observable Universe.
Blue whale — 30 m. The largest animal ever to exist on Earth.
Eiffel Tower — 330 m.
Burj Khalifa — 828 m.
Mount Everest — 8 848 m.
Moon — 3 474 km.
Earth — 12 742 km.
Jupiter — 139 820 km.
Sun — 1 392 000 km.
Astronomical Unit — 149.6 million km.
UY Scuti — 2.4×10¹² m. One of the largest known stars.
Oort Cloud — ~1 light-year from the Sun.
Light-year — 9.46×10¹⁵ m.
Proxima Centauri — 4.24 light-years away.
Orion Nebula — 24 light-years across.
Milky Way — ~100 000 light-years.
Andromeda — 2.5 million light-years from us.
Local Group — ~10 million light-years.
Laniakea Supercluster — 520 million light-years.
Sloan Great Wall — 1.4 billion light-years.
Observable Universe — 93 billion light-years across.