UK 1p coin
A UK 1p coin is the one-penny denomination of the decimal pound sterling circulation coinage.
Also known as: British 1p coin, UK penny, one penny coin
How big is it?
2.03 cm across
Also 0.7992 in
Specified diameter · specified
A little perspective
About the same scale as Sea angel.
Sea angel: A sea angel is a small, transparent swimming sea slug with wing-like appendages, found in cold ocean waters.
Measurements, assumptions & sources +
UK 1p coin
The current UK one-penny circulation coin is 20.3 mm in diameter, 1.65 mm thick and weighs 3.56 g. Current pieces are copper-plated steel.
Royal Mint — UK coin designs and specifications
The marked specified diameter is calibrated. Unmeasured illustration details are representative.
Sea angel
A defined 2 cm adult sea angel modelled on Clione limacina. Body length excludes the extended wing-like parapodia; species, maturity and posture change the span.
The marked defined body length is calibrated. Unmeasured illustration details are representative.
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Why this measurement?
Why we use 2.03 cm
For comparison, this page uses specified diameter. The record labels this value specified, so the stated convention rather than an inferred average controls the comparison.
The current UK one-penny circulation coin is 20.3 mm in diameter, 1.65 mm thick and weighs 3.56 g. Current pieces are copper-plated steel.
The marked horizontal span follows the named feature; transparent margins and unmeasured details do not alter it. How calibrated comparisons work →
Recorded properties
UK 1p coin dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 2.03 cm | Not recorded | specified | |
| 1.65 mm | Not recorded | specified | |
| 3.56 g | Not recorded | specified |
Around this scale
Go smaller. Go bigger.
These links use compatible length records, ordered around the selected value.
Nearest lower value · Everyday thingsUK 5p coin1.8 cmA UK 5p coin is the five-pence denomination of the decimal pound sterling circulation coinage.
Around the same scale · Everyday thingsUK 2p coin2.591 cmA UK 2p coin is the two-pence denomination of the decimal pound sterling circulation coinage.
Nearest higher value · Everyday things£1 coin2.343 cmA £1 coin is a twelve-sided British coin used as standard currency in the United Kingdom.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
- Royal Mint — UK coin designs and specificationsCurrent circulation denomination dimensions, masses, compositions and design history.
There’s always another scale
Follow your curiosity.
Everyday thingsUK 2p coin2.591 cmA UK 2p coin is the two-pence denomination of the decimal pound sterling circulation coinage.Everyday thingsUK 5p coin1.8 cmA UK 5p coin is the five-pence denomination of the decimal pound sterling circulation coinage.Everyday things£1 coin2.343 cmA £1 coin is a twelve-sided British coin used as standard currency in the United Kingdom.
Living thingsSea angel2 cmA sea angel is a small, transparent swimming sea slug with wing-like appendages, found in cold ocean waters.
Everyday thingsUS nickel2.121 cmA US nickel is a five-cent coin made primarily of a copper-nickel alloy.
PeopleHuman eyeball2.4 cmThe human eyeball is the globe-shaped organ that receives light and begins the process of vision.
Everyday thingsUK 20p coin2.14 cmA UK 20p coin is the seven-sided twenty-pence denomination of the decimal pound sterling circulation coinage.
Living thingsBird’s nest fungus2 cmBird’s nest fungus is a small fungus whose fruiting body resembles a tiny nest containing spore-filled capsules called peridioles.