Explore a dimension
Length & distance,
in perspective.
149 useful quantities, from fundamental to deep space.
The scale of everything
From almost nothing
to almost everything.
Cross 61 orders of magnitude. Start with a bee and travel all the way to the edge of the observable universe.
Take the journey ↗
149 quantities, organised by scale.
No matches here. Try the main search to explore your own quantity.
01 / 1 discoveries
Fundamental
02 / 16 discoveries
Microscopic
03 / 37 discoveries
Up close
1 micrometre5 micrometres10 micrometres20 micrometres50 micrometres100 micrometres250 micrometres500 micrometres1 millimetre2 millimetres3 millimetres5 millimetres6 millimetres0.25 inches8 millimetres1 centimetre0.5 inches2 centimetres1 inch3 centimetres5 centimetres2 inches3 inches10 centimetres4 inches15 centimetres6 inches20 centimetres8 inches25 centimetres10 inches30 centimetres1 foot50 centimetres2 feet75 centimetres3 feet
04 / 31 discoveries
Human scale
05 / 29 discoveries
Our planet
1 kilometre1 mile2 kilometres3 kilometres2 miles3 miles5 kilometres5 miles10 kilometres15 kilometres10 miles20 kilometres21.0975 kilometres20 miles26.2 miles42.195 kilometres50 kilometres50 miles100 kilometres100 miles200 kilometres500 kilometres500 miles1,000 kilometres1,000 miles5,000 kilometres1 Earth radius10,000 kilometres1 Earth diameter
06 / 13 discoveries
Solar neighbourhood
07 / 22 discoveries
Deep space
100,000 astronomical units1 parsec4.25 light-years10 light-years10 parsecs100 light-years100 parsecs1,000 light-years1 kiloparsec26,000 light-years10 kiloparsecs100,000 light-years50 kiloparsecs2,500,000 light-years1 megaparsec10,000,000 light-years10 megaparsecs100 megaparsecs1 × 10⁹ light-years1 gigaparsec10 gigaparsecs9.2 × 10¹⁰ light-years
There’s always another scale
Follow your curiosity.
Microscopic10 µm cell10 µmA cell is the basic structural unit of living organisms.
Microscopic2 µm bacterium2 µmA bacterium is a single-celled microorganism without a membrane-bound nucleus.
People70 µm hair70 µmA hair is a slender strand of protein that grows from the skin of humans and other mammals.
Everyday thingsSheet of paper100 µmA sheet of paper is a flat material made from cellulose pulp, used for writing, printing or packaging.
MicroscopicGrain of sand500 µmA grain of sand is a tiny fragment of rock or mineral, commonly found on beaches and in soil.
Living thingsPoppy seed1 mmA poppy seed is an edible seed produced by plants in the poppy family and commonly used in breads and other foods.
Living thingsSesame seed3 mmA sesame seed is an oil-rich edible seed produced by the sesame plant and used whole, ground or pressed for oil.
Everyday thingsGrain of rice7 mmA grain of rice is the edible seed of the rice plant, widely consumed as a staple food.