A5 paper
A5 paper is an ISO 216 paper format commonly used for notebooks, leaflets and small documents.
How big is it?
21 cm long
Also 8.268 in
Length · standard
A little perspective
A5 paper vs Disc golf driver: length comparison
The length of a sheet of A5 paper is approximately equal to the outside diameter of a disc golf driver.
A5 paper is an ISO 216 paper format commonly used for notebooks, leaflets and small documents.
A disc golf driver is a specialised flying disc designed for long-distance throws in the sport of disc golf.
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 +
A5 paper
Length: 21 cm; standard.
148 × 210 mm. Area is derived from trimmed sides.
University of Cambridge — ISO paper sizes
The marked length is calibrated. Unmeasured illustration details are representative.
Disc golf driver
Specified outside diameter: 21.1 cm; specified specimen; range 21 cm–21.3 cm.
A defined PDGA-approved driver 21.1 cm in outside diameter and 175 g, near the permitted maximum mass for that diameter. Rim profile varies by approved model; printed graphics are not part of the measurement.
Professional Disc Golf Association — Technical standards
The marked specified outside diameter is calibrated. Unmeasured illustration details are representative.
Use the visual comparison to explore its scale, then check the measurements and sources.
Change your perspective
Put it next to…
Choose a suggestion to redraw the comparison, or open its page to learn what it is.
Why this measurement?
Why we use 21 cm
We compare the length of a sheet of A5 paper. This value follows a stated standard.
148 × 210 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 |
|---|---|---|---|
| 21 cm | Not recorded | standard | |
| 310.8 cm² | Not recorded | standard | |
| 14.8 cm | Not recorded | standard | |
| 21 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 objectsPaperback book20 cmHeightA paperback book is a collection of printed pages bound with a flexible paper cover for reading.
Around the same scaleEveryday objectsCabbage head20 cmDefined head diameterA cabbage head is the compact, leafy, edible part of a green cabbage plant, commonly used as a vegetable.
Nearest higher valueFundamental physicsHydrogen 21 cm hyperfine transition21.1 cmVacuum wavelengthThis is a change in the energy state of neutral hydrogen atoms that produces or absorbs radio waves, widely used in radio astronomy.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.
SportDisc golf driver21.1 cmA disc golf driver is a specialised flying disc designed for long-distance throws in the sport of disc golf.
Living thingsSea hare20 cmA sea hare is a soft-bodied marine mollusc related to sea slugs, capable of releasing ink when threatened.Everyday thingsCabbage head20 cmA cabbage head is the compact, leafy, edible part of a green cabbage plant, commonly used as a vegetable.
SpaceVanguard 116.5 cmVanguard 1 is an early American satellite launched in 1958, notable for being the oldest human-made object still in orbit.
PeopleHuman liver28 cmThe human liver is a vital organ in the abdomen that processes nutrients, detoxifies chemicals, and produces bile for digestion.
Built worldBrick21.5 cmA brick is a rectangular block made from clay or concrete, commonly used in building walls and structures.
ContainersFrench coffee press1 LA French coffee press is a device for brewing coffee by steeping ground beans in hot water and separating them with a plunger and mesh filter.
SportSize 5 football430 gAn association-football ball is an air-filled spherical ball designed to be kicked, passed and headed during play.