How many millimeters equal 1 pica?

4.233 mm = 1 pica (since 6 picas = 1 inch = 25.4 mm). So 25.4 ÷ 6 ≈ 4.233 mm per pica.

My InDesign specs are in picas but my client wants metric. How do I convert?

Multiply picas by 4.233. Example: 5 picas × 4.233 ≈ 21.2 mm. Use this for international client handoffs.

What's the advantage of using picas over millimeters in design?

Picas tie directly to typography (1 pica = 12 points). Since fonts are measured in points, picas make sizing calculations simpler: 1 pica = 12pt exactly.

Can I use this conversion in all design tools?

Yes. InDesign, Quark, and other DTP software support both picas and metric units. Set your ruler units to match your client's preference.

Pica to Millimeter Converter

Enter a value to instantly convert between typography units.

From

Precision4 dp

1 Pica = 4.2333 Millimeter

Key Formulas

Point → Pica

pc = pt × 0.0833333

Point → Inch

in = pt × 0.0138889

Pica → Inch

in = pc × 0.166667

Formula

mm = pc × 4.233333

Picas are traditional typographic units; millimeters are metric measurements. 1 pica equals approximately 4.233 millimeters (since 6 picas = 1 inch = 25.4 mm). This conversion is essential for designers using DTP tools (InDesign, Quark) who need to work with international metric specifications.

Source: Adobe PostScript Language Reference & W3C CSS Values

Last reviewed: 2026-06-11 · see our methodology

Frequently Asked Questions

Real-World Examples

1 pica ≈ 4.2 mm. Smallest unit most print designers work with; roughly a grain of rice in metric.

1 pc = 4.233 mm

2 picas ≈ 8.5 mm. Common margin increment in InDesign; translates to less than 1 centimeter.

2 pc = 8.467 mm

6 picas (1 inch) = 25.4 mm exactly. Reference point for all pica-metric conversions.

6 pc = 25.4 mm

12 picas (2 inches) ≈ 50.8 mm (about 5 cm). Large margin for professional documents.

12 pc = 50.8 mm

points to picas points to type inches picas to type inches points to mm pixels to points ems to rems

Pica to Millimeter Converter

Key Formulas

Formula

Frequently Asked Questions

Real-World Examples

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