Sheet of paper
A sheet of paper is a flat material made from cellulose pulp, used for writing, printing or packaging.
How big is it?
100 µm thick
Also 0.003937 in
Thickness · example
A little perspective
Sheet of paper vs Hair: length comparison
The thickness of a sheet of paper is about 1.43 times the diameter of a hair.
A sheet of paper is a flat material made from cellulose pulp, used for writing, printing or packaging.
A hair is a slender strand of protein that grows from the skin of humans and other mammals.
Both rulers start at the same zero and share one linear scale. Artwork keeps its original proportions. Horizontal rulers compare the selected spans; vertical brackets also identify height on the artwork.
Measurements, assumptions & sources +
Sheet of paper
Thickness: 100 µm; example.
A 0.1 mm thick sheet. Paper stock and compression change thickness.
Defined examples — our methodology
The marked thickness is calibrated. Unmeasured illustration details are representative.
Hair
Diameter: 70 µm; example.
A 70 µm diameter example; hair thickness varies.
Defined examples — our methodology
The marked diameter is calibrated. Unmeasured illustration details are representative.
Use the visual comparison to explore its scale, then check the measurements and sources.
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Why this measurement?
Why we use 100 µm
We compare the thickness of a sheet of paper. This is an illustrative comparison value, not a claim that every example is the same.
A 0.1 mm thick sheet. Paper stock and compression change thickness.
The marked vertical span follows the measured feature, not the edges of the image. How calibrated comparisons work →
Recorded properties
Dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 100 µm | Not recorded | example |
Around this scale
Explore nearby values.
Compare examples with lower, similar and higher values. Each card names the measurement being compared.
Nearest lower valuePeople and human anatomyHair70 µmDiameterA hair is a slender strand of protein that grows from the skin of humans and other mammals.
Around the same scalePeople and human anatomySperm cell50 µmRepresentative head-to-tail lengthA sperm cell is a male reproductive cell with a compact head, energy-producing midpiece and a flagellum used for movement.
Nearest higher valueMicroscopic objectsSalt crystal300 µmCharacteristic sizeA salt crystal is a small, naturally occurring or manufactured piece of sodium chloride used in food and industry.Sources and method
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The source records and measurement method remain available for inspection.
More ways to see it
Curated comparisons
There’s always another scale
Follow your curiosity.
PeopleHair70 µmA hair is a slender strand of protein that grows from the skin of humans and other mammals.MicroscopicSalt crystal300 µmA salt crystal is a small, naturally occurring or manufactured piece of sodium chloride used in food and industry.
MicroscopicPollen grain30 µmA pollen grain carries the male reproductive cells of a seed-producing plant.
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.PeopleSperm cell50 µmA sperm cell is a male reproductive cell with a compact head, energy-producing midpiece and a flagellum used for movement.
MicroscopicDust particle10 µmDust is a mixture of tiny solid particles from sources such as soil, fibres, skin and pollen.
Everyday thingsChia seed2 mmA chia seed is the edible seed of the Salvia hispanica plant, often used in foods such as puddings and cereals.