Convert Pica to Kilometer
Convert picas to kilometers instantly. 1 pica = 4.233333e-6 kilometer — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Kilometer to Pica converter for the reverse conversion.
Units explained
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.
Kilometer
A kilometer is a metric unit of length equal to one thousand meters. It is the standard unit for measuring road distances, geographic distances, and other large-scale measurements in metric countries.
The kilometer was defined alongside the meter in 1795 using the standard SI prefix kilo- (from Greek chilioi, "thousand"), denoting one thousand units.
Kilometers are used worldwide (except the United States and a few others) for road signage, geographic distance, athletic events, and scientific distances at planetary scale. Speed limits in most countries are given in km/h.
Adopted 1795 in France as part of the original metric system; the kilometer became the global standard for road and geographic distance through the 19th and 20th century metric adoption.
Pica to Kilometer conversion formula
The relationship between picas and kilometers:
To convert picas to kilometers, multiply the value in picas by 4.233333e-6. To reverse, multiply kilometers by 236220.4743009486.
How to use this converter
Type a value into the calculator. The result in kilometers updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Kilometer to Pica converter for the reverse direction.
Step-by-step: convert picas to kilometers
- Write down the value in picas (pc).
- Multiply that value by the factor 4.233333e-6.
- The product is the equivalent value in kilometers (km).
- To reverse, multiply the kilometer value by 236220.4743009486.
Worked examples
Example 1 — Convert 1 pc to km:
1 × 4.233333e-6 = 4.233333e-6 km
Example 2 — Convert 100 pc to km:
100 × 4.233333e-6 = 0.0004233333 km
Real-world example — Architectural to geographic scale
A 100,000-pica measurement equals one kilometer. The five-order-of-magnitude scale change comes up in mapping work where architectural site plans must be related to road-network maps.
100000 pc × 4.233333e-6 = 0.42333333 km
Real-world example — Small to geographic-scale
100,000 picas equals one kilometer — a useful conversion when small-scale survey diagrams must be related to road-network distances on a different map.
100000 pc × 4.233333e-6 = 0.42333333 km
Pica to Kilometer conversion table
Standard reference values for converting picas to kilometers:
| Pica [pc] | Kilometer [km] |
|---|---|
| 0.01 | 4.233333e-8 |
| 0.1 | 4.233333e-7 |
| 1 | 4.233333e-6 |
| 2 | 8.466667e-6 |
| 3 | 1.27e-5 |
| 4 | 1.693333e-5 |
| 5 | 2.116667e-5 |
| 10 | 4.233333e-5 |
| 20 | 8.466667e-5 |
| 30 | 0.000127 |
| 40 | 0.0001693333 |
| 50 | 0.0002116667 |
| 100 | 0.0004233333 |
| 500 | 0.0021166667 |
| 1000 | 0.0042333333 |
Frequently asked questions
How many kilometers is 1 pica?
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Popular length unit conversions
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Metric / SI (4 units)
Imperial / US Customary (4 units)
Typographic (2 units)
Sources & references
Conversion factor (1 pc = 4.233333e-6 km) 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.