Millimeters to Pixels Converter
Enter the typographical length in millimeters below to convert it to pixels.
Convert Millimeters (mm) to Pixels (px)
Enter a value in millimeters (mm) (mm) to convert to pixels (px) (px).
Millimeter to Pixel Conversion Table
Table showing various millimeter measurements converted to pixels. Click any preset value or arrow to load it into the converter.
| Millimeters (mm) (mm) | Pixels (px) (px) |
|---|---|
| 1 mm | 3.7795276 px |
| 2 mm | 7.5590551 px |
| 2.5 mm | 9.4488189 px |
| 5 mm | 18.8976378 px |
| 10 mm | 37.7952756 px |
| 15 mm | 56.6929134 px |
| 20 mm | 75.5905512 px |
| 25 mm | 94.488189 px |
| 30 mm | 113.3858268 px |
| 50 mm | 188.976378 px |
How to Convert Millimeters to Pixels
To convert millimeters to pixels, multiply the typographical length by the following conversion ratio: 3.7795276 pixels/millimeter.
Since one millimeter is equal to 3.7795276 pixels, you can use this simple formula to convert:
The typographical length in pixels is equal to the typographical length in millimeters multiplied by 3.7795276.
For example, here's how to convert 5 millimeters to pixels using the formula above.
How Many Pixels Are in a Millimeter?
There are 3.7795276 pixels in a millimeter, which is why we use this value in the formula above.
Our millimeter to pixel calculator automatically converts your typographical length measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Millimeters and pixels are both units used to measure typographical length. Keep reading to learn more about each unit.
What Is a Millimeter?
A millimeter is a unit of typographical length equal to 2.8346457 points (pt), the base unit for typographical length. 1 mm = 2.83464567 DTP points. [1]
The millimeter is classified as a metric and SI-compatible unit of typographical length. Millimeters can be abbreviated as mm; for example, 1 millimeter can be written as 1 mm.
In the metric system, "milli" is the standard SI prefix for thousandths, or 10⁻³. This makes the millimeter (mm) a convenient decimal multiple of the point (pt).
In practice, millimeters (mm) are widely used across standard typographical length applications within SI metric workflows, engineering documentation, and technical data sheets.
What Is a Pixel?
A pixel is a unit of typographical length equal to 0.75 points (pt), the base unit for typographical length. W3C CSS reference pixel equal to 1/96 inch (0.75 pt). [2]
The pixel is classified as a standard unit of typographical length. Pixels can be abbreviated as px; for example, 1 pixel can be written as 1 px.
When working with pixels (px) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, pixels (px) are widely used across standard typographical length applications within international standard workflows, engineering documentation, and technical data sheets.
When converting typographical length between millimeters (mm) and pixels (px), keep full floating-point precision (1 mm = 3.7795276 px; 1 px = 0.2645833 mm) during intermediate calculations and round only the final pixel figure to match your instrument tolerance.
More Millimeter & Pixel Conversions
Need to calculate in the opposite direction? Use our pixels (px) to millimeters (mm) calculator to switch your starting unit immediately. You can also explore related tools such as converting pixels (px) to millimeters (mm), converting points (pt) to pixels (px), or converting points (pt) to picas (pc).
Convert from Millimeters
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Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Typography Metrology Standard — Millimeters (mm) (mm) to Pixels (px) (px)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Millimeter (Print) (mm) & Pixel (CSS 96 DPI) (px)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (mm to px)