Convert Point to Millimeter
Convert points to millimeters instantly. 1 point = 0.3527778 millimeter — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Millimeter to Point converter for the reverse conversion.
Units explained
Point
A point is a typographic unit equal to 1/72 of an inch (about 0.353 mm) in the PostScript point system. It is the standard unit for font sizes and typographic measurements in modern digital publishing.
The PostScript/Adobe point of exactly 1/72 inch was adopted in 1984 with the release of PostScript. This replaced earlier, slightly different typographic points (Didot, Truchet, Pica points) that had varied across regional printing traditions.
Points are used throughout typesetting, word processing, and design software for font sizes (typical body text is 10–12 pt) and small typographic dimensions. The web's standard typography unit, even when expressed in CSS as 1pt = 1.333px.
PostScript point of 1/72 inch defined by Adobe in 1984; predecessors include the Didot point (France, ~0.376 mm) and the Truchet/Pica systems.
Millimeter
A millimeter is a metric unit of length equal to one thousandth of a meter (1/1000 m). It is the standard small-scale unit in the SI system and is widely used wherever sub-centimeter precision matters.
The millimeter was defined alongside the meter when France adopted the metric system in 1795, using the standard SI prefix milli- (from Latin mille, "thousand") to denote one-thousandth.
Millimeters are used in engineering drawings, machining, manufacturing, paper sizes, rainfall measurement, and any context where dimensions below one centimeter need to be specified clearly. Most rulers worldwide are marked in millimeters.
Adopted in 1795 in France as part of the original metric system; standardized internationally by the Metre Convention in 1875 and confirmed in the SI in 1960.
Point to Millimeter conversion formula
The relationship between points and millimeters:
To convert points to millimeters, multiply the value in points by 0.3527778. To reverse, multiply millimeters by 2.8346454907.
How to use this converter
Type a value into the calculator. The result in millimeters updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Millimeter to Point converter for the reverse direction.
Step-by-step: convert points to millimeters
- Write down the value in points (pt).
- Multiply that value by the factor 0.3527778.
- The product is the equivalent value in millimeters (mm).
- To reverse, multiply the millimeter value by 2.8346454907.
Worked examples
Example 1 — Convert 1 pt to mm:
1 × 0.3527778 = 0.3527778 mm
Example 2 — Convert 100 pt to mm:
100 × 0.3527778 = 35.27778 mm
Real-world example — Packaging gauge
A 4-point plastic bag thickness is a common spec for grocery and freezer bags. Converting from points to millimeters is what packaging buyers do whenever they bridge US and metric supplier quotes.
4 pt × 0.3527778 = 1.4111112 mm
Real-world example — Plastic film and laminate thickness
A 500-point sheet is a typical spec for ID-card laminates and film overlays. Converting to millimeters aligns the value with the unit most CAD systems and material datasheets prefer.
500 pt × 0.3527778 = 176.3889 mm
Point to Millimeter conversion table
Standard reference values for converting points to millimeters:
| Point [pt] | Millimeter [mm] |
|---|---|
| 0.01 | 0.003527778 |
| 0.1 | 0.03527778 |
| 1 | 0.3527778 |
| 2 | 0.7055556 |
| 3 | 1.0583334 |
| 4 | 1.4111112 |
| 5 | 1.763889 |
| 10 | 3.527778 |
| 20 | 7.055556 |
| 30 | 10.583334 |
| 40 | 14.111112 |
| 50 | 17.63889 |
| 100 | 35.27778 |
| 500 | 176.3889 |
| 1000 | 352.7778 |
Frequently asked questions
How many millimeters is 1 point?
How do I convert points to millimeters?
How do I convert millimeters back to points?
How many millimeters is 100 points?
Popular length unit conversions
Convert Point to other length units
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Metric / SI (4 units)
Imperial / US Customary (4 units)
Typographic (2 units)
Sources & references
Conversion factor (1 pt = 0.3527778 mm) 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.