Length & distance

Just how long is 1 inch?

Up close

1 in

0.0254 mmetres
0.083333 ftfeet
1.5783 × 10⁻⁵ mimiles
1.6979 × 10⁻¹³ AUastronomical units
True scale
01
1 inch2.54 cmLength · definition
02
UK 2p coin2.591 cmSpecified diameter · specified
Both marked spans share one linear scale. Artwork keeps its proportions; poses and surface detail are illustrative.

A little perspective

The specified diameter of UK 2p coin is about 1.02 times the length of 1 inch.

Measurements, assumptions & sources +

1 inch

The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.

NIST — SI conversion factors

UK 2p coin

The current UK two-pence circulation coin is 25.91 mm in diameter, 2.03 mm thick and weighs 7.12 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.

Measurement details

Why these numbers?

The visual compares length with specified diameter. The records below preserve each value’s basis and caveats.

1 inch

2.54 cm

Length · definition

The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.

UK 2p coin

2.591 cm

Specified diameter · specified

The current UK two-pence circulation coin is 25.91 mm in diameter, 2.03 mm thick and weighs 7.12 g. Current pieces are copper-plated steel.

Comparing
Length ↔ Specified diameter
Relative size
UK 2p coin is larger on this measurement by a factor of about 1.02. UK 2p coin's selected measurement is approximately 2.01% greater than 1 inch's.

How to read the visual

The labelled spans and stored measurements determine the scale; unmeasured illustration details do not.

Change your perspective

Put it next to…

Choose a suggestion to redraw the comparison, or open its page to learn what it is.

About this thing
About this thing
About this thing
About this thing
About this thing
About this thing

The full collection

Choose something to compare.

Loading compatible things…

A little smaller. A little larger.

Keep exploring length.

See all ↗

Share a little perspective.