Convert Inch to Pica
Convert inches to picas instantly. 1 inch = 6.0000000472 pica — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Pica to Inch converter for the reverse conversion.
Units explained
Inch
An inch is an Imperial and US customary unit of length defined since 1959 as exactly 25.4 millimeters (0.0254 meters). It is still the standard small unit of length in the United States, the United Kingdom (informally), and a few other countries.
The inch derives from the Roman uncia (one-twelfth of a foot) and survived through Anglo-Saxon and medieval English measurement systems. Various definitions persisted regionally until the 1959 International Yard and Pound Agreement standardized the inch globally as exactly 25.4 mm.
Inches are used in the US and UK for body height, screen sizes (TVs, monitors, phones), tire sizes, plumbing, lumber, paper sizes (US Letter is 8.5 × 11 in), and most consumer product specifications in the United States.
Anglo-Saxon origin (predating 1066); standardized to 25.4 mm exactly by the International Yard and Pound Agreement of 1959, signed by the US, UK, Canada, Australia, New Zealand, and South Africa.
Pica
A pica is a typographic unit equal to exactly 12 points, or 1/6 inch (about 4.233 mm). It is used for measuring column widths and large typographic elements.
The PostScript pica of 12 points = 1/6 inch was standardised in 1984 alongside the PostScript point. Traditional pre-1984 picas varied slightly (e.g., the American pica was 0.166 inch, very close but not identical).
Picas are used for column widths in newspaper and magazine layout (typical column is 11–15 picas), line spacing in book design, and large typographic measurements. Mostly used by professional typesetters.
Modern PostScript pica defined in 1984 at 12 points = 1/6 inch; older typographic systems used slightly different pica values.
Inch to Pica conversion formula
The relationship between inches and picas:
To convert inches to picas, multiply the value in inches by 6.0000000472. To reverse, multiply picas by 0.1666666654.
How to use this converter
Type a value into the calculator. The result in picas updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Pica to Inch converter for the reverse direction.
Step-by-step: convert inches to picas
- Write down the value in inches (in).
- Multiply that value by the factor 6.0000000472.
- The product is the equivalent value in picas (pc).
- To reverse, multiply the pica value by 0.1666666654.
Worked examples
Example 1 — Convert 1 in to pc:
1 × 6.0000000472 = 6.0000000472 pc
Example 2 — Convert 100 in to pc:
100 × 6.0000000472 = 600.0000047244 pc
Real-world example — Hardware-scale dimensions
A 10-inch fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between inches and picas daily when mixing metric and imperial tools.
10 in × 6.0000000472 = 60.0000004724 pc
Real-world example — Postcard and small-object dimensions
A postcard is about 5 inches wide. Converting to picas is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 in × 6.0000000472 = 30.0000002362 pc
Real-world example — Ruler-scale measurements
A 30-inch school ruler converts cleanly to picas — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 in × 6.0000000472 = 180.0000014173 pc
Inch to Pica conversion table
Standard reference values for converting inches to picas:
| Inch [in] | Pica [pc] |
|---|---|
| 0.01 | 0.0600000005 |
| 0.1 | 0.6000000047 |
| 1 | 6.0000000472 |
| 2 | 12.0000000945 |
| 3 | 18.0000001417 |
| 4 | 24.000000189 |
| 5 | 30.0000002362 |
| 10 | 60.0000004724 |
| 20 | 120.0000009449 |
| 30 | 180.0000014173 |
| 40 | 240.0000018898 |
| 50 | 300.0000023622 |
| 100 | 600.0000047244 |
| 500 | 3000.000023622 |
| 1000 | 6000.0000472441 |
Frequently asked questions
How many picas is 1 inch?
How do I convert inches to picas?
How do I convert picas back to inches?
How many picas is 100 inches?
Popular length unit conversions
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Metric / SI (18 units)
Imperial / US Customary (26 units)
Nautical (1 units)
Astronomical (9 units)
Atomic / Physics (6 units)
Typographic (3 units)
Sources & references
Conversion factor (1 in = 6.0000000472 pc) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.