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Picas to CSS millimetres converter

Convert picas (pc) to CSS millimetres (mm). The reference table uses 16 px element and root fonts; examples label any different font basis.

Typography converter

Instant conversion

Edit either value. Decimals and scientific notation supported.

pc

mm

CONVERSION

1 pc ≈ 4.233333333 mm

Precision changes displayed rounding, not calculation accuracy.

FORMULAmm = pc × 4.23333333333333

FORMULA & EXAMPLES

How to convert Picas to CSS millimetres

mm = pc × 4.23333333333333

Multiply the pc reading by 4.23333333333333.

Worked examples

1 pc ≈ 4.233333333 mm

1 × 4.23333333333333 ≈ 4.233333333

Font basis for this example: element 16 px; root 16 px.

6 pc ≈ 25.4 mm

6 × 4.23333333333333 ≈ 25.4

Font basis for this example: element 16 px; root 16 px.

Frequently asked questions

Which font or display assumption applies?

em and rem depend on the specified font context. CSS absolute units have fixed relationships to reference pixels, which do not necessarily equal physical display pixels.

Picas to CSS millimetres table

Fixed reference · Pica to CSS millimetre · Element and root font sizes: 16 px

Reference values use this page’s named pair and default context. Calculator precision and font settings do not change this table.

Pica (pc)CSS millimetre (mm)
00
0.10.4233333333
0.52.116666667
14.233333333
28.466666667
521.16666667
1042.33333333
25105.8333333
50211.6666667
100423.3333333
10004233.333333
Table results use 10 significant figures; decimal formula coefficients use up to 15. Calculations use the unit definitions before rounding. Extra digits do not improve measurement accuracy.

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