Convert Points (Printer's) to PostScript Points
Point (Printer's) (pt (pr)) to PostScript Point (pt (PS)) typography conversion — enter any value below to get an instant result, or use the table for common values.
Results from this calculator are estimates provided for general informational purposes only, based on formulas, rates, and standards commonly accepted as of 2026. Figures may differ slightly from other calculators or professional sources due to rounding methods, differing assumptions, or regional regulations, and rules may change over time. Always consult a qualified professional — such as a financial advisor, healthcare provider, or other relevant specialist — before making decisions based on these results.
Result
1 pt (pr) = 0.99626401 pt (PS)
1 Point (Printer's) = 0.99626401 PostScript Points
1 PostScript Point = 1.00375 Points (Printer's)
1 pt (pr) in every supported unit
Conversion chart: Point (Printer's) to PostScript Points
Conversion table
| Point (Printer's) (pt (pr)) | PostScript Point (pt (PS)) |
|---|---|
| 0.01 pt (pr) | 0.0099626401 pt (PS) |
| 0.1 pt (pr) | 0.099626401 pt (PS) |
| 1 pt (pr) | 0.99626401 pt (PS) |
| 2 pt (pr) | 1.992528 pt (PS) |
| 3 pt (pr) | 2.988792 pt (PS) |
| 5 pt (pr) | 4.98132 pt (PS) |
| 10 pt (pr) | 9.9626401 pt (PS) |
| 20 pt (pr) | 19.92528 pt (PS) |
| 50 pt (pr) | 49.8132 pt (PS) |
| 100 pt (pr) | 99.626401 pt (PS) |
| 1000 pt (pr) | 996.26401 pt (PS) |
Point (Printer's) (pt (pr))
Definition: The traditional Anglo-American printer's point from the metal-type era, equal to approximately 1/72.27 of an inch — very slightly larger than the modern computer point.
History: Standardized by American type foundries in the late 19th century (the "Johnson pica" system), it remained the printing trade's standard measurement until digital typesetting rounded it to the cleaner 1/72-inch computer point.
Current use: Referenced mainly in historical typesetting and printing-industry documentation rather than modern software, which universally uses the rounded computer point instead.
PostScript Point (pt (PS))
Definition: Adobe's PostScript point, defined as exactly 1/72 of an inch — numerically identical to the modern "computer point" used throughout contemporary design software.
History: Introduced with the PostScript page-description language in 1982, which fixed the point to a clean 1/72 inch specifically to simplify digital typesetting math.
Current use: The de facto standard point size used across all modern desktop-publishing, word-processing, and web-design software for specifying font sizes and layout dimensions.
Supported Units
| Unit | Symbol | In Twip |
|---|---|---|
| Twip | twip | 1 twip |
| Meter | m | 56692.913 twip |
| Centimeter | cm | 566.92913 twip |
| Millimeter | mm | 56.692913 twip |
| Character (X) | char (X) | 120 twip |
| Character (Y) | char (Y) | 240 twip |
| Pixel (X) | px (X) | 15 twip |
| Pixel (Y) | px (Y) | 15 twip |
| Inch | in | 1440 twip |
| Pica (Computer) | pica | 240 twip |
| Pica (Printer's) | pica (pr) | 239.10336 twip |
| PostScript Point | pt (PS) | 20 twip |
| Point (Computer) | pt | 20 twip |
| Point (Printer's) | pt (pr) | 19.92528 twip |
| En | en | 9.9626401 twip |
About These Parameters
- Value
- The typographic measurement you want to convert, expressed in the "From" unit — a font size in points, a margin in inches or millimeters, or a layout coordinate in twips.
- From Unit
- The unit your value is currently measured in — an RTF document's twip coordinate, a font size in computer points, or a physical page dimension in inches or centimeters.
- To Unit
- The unit you want the result converted into. Use the swap button to flip From and To instantly, handy when moving between a print-trade unit like the pica and a physical unit like the inch.
How Typography Conversion Works
The Formula
Every unit here is defined by a fixed multiplier relative to the twip. To convert a value from one unit to another:
result = value × (factor of "From" unit ÷ factor of "To" unit)
For Point (Printer's) → PostScript Point: multiply by 0.99626401. For example, 1 pt (pr) × 0.99626401 = 0.99626401 pt (PS).
Points and Picas: From Metal Type to Digital Type
Before desktop publishing, printers worked in the Anglo-American point system standardized by 19th-century type foundries, where a point measured roughly 1/72.27 of an inch and a pica was 12 of those points. When Adobe introduced PostScript in 1982, it rounded the point to a much cleaner exactly 1/72 of an inch — the "computer point" (and computer pica, exactly 1/6 inch) used by virtually every modern design and word-processing application. The tiny difference between the two (about 0.3%) rarely matters for everyday layout work, but this converter keeps both available since historical typesetting records still use the older printer's point and pica.
Why Windows and RTF Use the Twip
Microsoft introduced the twip for Windows' GDI graphics subsystem and the Rich Text Format in the 1980s specifically because 1/1440 of an inch is small enough to place text and graphics with sub-pixel precision while still being a whole number for almost any practical page coordinate — a working unit that avoids the rounding errors floating-point point or pica values would introduce into a document's internal layout data. That's why RTF files and Windows layout APIs still store every coordinate in twips today, even though no one designs directly in twips the way they think in points or inches.
Example
1 pt (pr) equals 0.99626401 pt (PS). For scale, a standard 12-point font size is exactly 240 twips, a 1-inch page margin is 1,440 twips (or 6 computer picas), and US Letter paper (8.5 × 11 inches) measures 12,240 by 15,840 twips.
Frequently Asked Questions
How many PostScript Points are in 1 Point (Printer's)?
1 Point (Printer's) (pt (pr)) equals exactly 0.99626401 PostScript Points (pt (PS)).
What is a twip and why does it matter?
A twip ("twentieth of a point") is 1/1440 of an inch — small enough for precise text and object placement, yet still a whole number for nearly any practical layout coordinate. It's the native internal unit of RTF documents and the Windows GDI graphics subsystem, so converting to and from twips matters whenever you're working with document layout data programmatically.
What's the difference between a computer point and a printer's point?
The computer (PostScript) point is exactly 1/72 of an inch, standardized by Adobe in 1982 for digital typesetting. The older printer's point, from the metal-type era, is about 1/72.27 of an inch — very slightly smaller than 1/72. The difference is under half a percent, but it's why historical typesetting measurements don't translate exactly onto modern digital point sizes.
How many points are in a pica?
A pica is always 12 points — this ratio holds for both the computer pica/point pair (12 × 1/72 inch = 1/6 inch) and the older printer's pica/point pair (12 × ~1/72.27 inch), so as long as you don't mix the computer and printer's versions, the "12 points per pica" rule always applies.
Are the character and pixel units exact?
No — character units are an approximation based on average character-cell size in a monospaced font, and the pixel units here assume the traditional 96-dots-per-inch Windows screen convention (1440 twips per inch ÷ 96 pixels per inch = 15 twips per pixel). Actual character widths vary by font, and actual screen pixel density varies by display, so treat these two as legacy approximations rather than physically exact measurements.