1 inch
2.54 cm - Length; definition.
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
NIST — SI conversion factors1 inch is about 2.54 times 1 centimetre.
Both rulers start at the same zero and share one linear scale. Artwork keeps its original proportions. A ruler represents the selected distance or a measurement not visible in this view.
2.54 cm - Length; definition.
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
NIST — SI conversion factors1 cm - Length; definition.
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
NIST — SI conversion factorsOne international inch is exactly 2.54 centimetres.
There’s always another scale
Side by side

Illustrative artwork · not to scale
Illustrative artwork · not to scale
Illustrative artwork · not to scale
Illustrative artwork · not to scaleGot a good eye for scale?