A3 paper
A3 paper is an ISO 216 paper format commonly used for drawings, diagrams and small posters.
How big is it?
42 cm long
Also 16.54 in
Length · standard
A little perspective
A3 paper vs Boomerang: length comparison
The length of a sheet of A3 paper is about 1.05 times the tip-to-tip span of a boomerang.
A3 paper is an ISO 216 paper format commonly used for drawings, diagrams and small posters.
A boomerang is a curved, flat tool traditionally used for sport or hunting, designed to return to the thrower when thrown correctly.
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 +
A3 paper
Length: 42 cm; standard.
297 × 420 mm. Area is derived from trimmed sides.
University of Cambridge — ISO paper sizes
The marked length is calibrated. Unmeasured illustration details are representative.
Boomerang
Defined tip-to-tip span: 40 cm; defined specimen; range 30 cm–60 cm.
A defined two-bladed returning boomerang 40 cm from tip to tip and 90 g. Throwing sticks and sporting boomerangs vary in outline; the curved flight path is not part of the measurement.
Encyclopaedia Britannica — Boomerang
The marked defined tip-to-tip span 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 42 cm
We compare the length of a sheet of A3 paper. This value follows a stated standard.
297 × 420 mm. Area is derived from trimmed sides.
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 |
|---|---|---|---|
| 42 cm | Not recorded | standard | |
| 1,247 cm² | Not recorded | standard | |
| 29.7 cm | Not recorded | standard | |
| 42 cm | Not recorded | standard |
Around this scale
Explore nearby values.
Compare examples with lower, similar and higher values. Each card names the measurement being compared.
Nearest lower valueEveryday objectsCassava root35 cmDefined whole-root lengthCassava root is the starchy, edible tuber of the tropical plant Manihot esculenta, commonly used as a staple food.
Around the same scaleLiving thingsRabbit40 cmLengthA rabbit is a herbivorous mammal with long ears and strong hind legs, often kept as a pet or found in grasslands and forests.
Nearest higher valuePeople and human anatomyHuman femur45 cmDefined adult bone lengthThe human femur is the thigh bone, connecting the hip to the knee and supporting body weight during movement.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
- University of Cambridge — ISO paper sizesNominal trimmed A-series dimensions. Area computed from millimetre-rounded sides.
More ways to see it
Curated comparisons
There’s always another scale
Follow your curiosity.
SportBoomerang40 cmA boomerang is a curved, flat tool traditionally used for sport or hunting, designed to return to the thrower when thrown correctly.PeopleHuman femur45 cmThe human femur is the thigh bone, connecting the hip to the knee and supporting body weight during movement.
Living thingsPlatypus50 cmThe platypus is a semi-aquatic mammal native to eastern Australia, notable for its duck-like bill and egg-laying reproduction.Everyday thingsCassava root35 cmCassava root is the starchy, edible tuber of the tropical plant Manihot esculenta, commonly used as a staple food.
SpaceSputnik 158 cmSputnik 1 was the first artificial satellite launched into Earth orbit by the Soviet Union in 1957.
SportTen-pin bowling pin38.1 cmA ten-pin bowling pin is a skittle-shaped target used in bowling, designed to be knocked down by a rolling ball.
ContainersSamovar urn5 LA samovar urn is a traditional metal vessel used to heat and serve tea, especially in Russian and Central Asian cultures.
Living thingsMeerkat50 cmA meerkat is a small, social mammal from southern Africa that lives in cooperative groups and forages for insects and other small animals.