MM to Pixels Calculator
Convert millimeters to pixels at any DPI resolution. Perfect for working with ISO A-series paper sizes and metric print dimensions.
Enter decimal values (e.g., 210 for A4 width)
Standard print quality is 300 DPI
Result in Pixels
Common ISO Sizes at 300 DPI
Understanding ISO A-Series Paper Sizes
The ISO A-series is the most common international standard for paper sizes, based on the metric system. Each size is exactly half the area of the next larger size.
Note: These are standard sizes used globally except in North America, where US Letter (8.5" × 11") is more common.
How to Use This Calculator
Enter MM Dimensions
Input the size in millimeters (e.g., 210 for A4 width) and select your target DPI (300 for standard print quality).
Get Pixel Dimensions
Instantly see the exact pixel dimensions. The calculator converts MM to inches first (÷25.4), then multiplies by DPI.
Create in Figma
Use the pixel dimensions to create frames in Figma for international print sizes. Export with Print for Figma at 300 DPI.
Why Use Millimeters for Print Design?
Millimeters (mm) are the standard unit for print design in most countries outside North America. The ISO A-series paper sizes (A4, A3, A5, etc.) are all defined in millimeters.
Global Standards
- • ISO A-series: Used in 100+ countries
- • A4 (210×297mm): Most common size worldwide
- • Business cards: 85×55mm (Europe/Asia)
- • Posters: Often in A-series (A3, A2, A1)
Precision & Consistency
- • Metric system offers precise measurements
- • Easy scaling (each A-size is half the next)
- • Universal compatibility with printers
- • Professional print industry standard
Conversion Formula
To convert millimeters to pixels, first convert to inches (since DPI means Dots Per Inch), then multiply by DPI:
25.4 is the exact conversion factor (1 inch = 25.4 millimeters)
Quick Reference: ISO A-Series at 300 DPI
| Paper Size | Millimeters | Inches | Pixels at 300 DPI |
|---|---|---|---|
| A6 | 105 × 148 mm | 4.13" × 5.83" | 1240 × 1748 px |
| A5 | 148 × 210 mm | 5.83" × 8.27" | 1748 × 2480 px |
| A4 | 210 × 297 mm | 8.27" × 11.69" | 2480 × 3508 px |
| A3 | 297 × 420 mm | 11.69" × 16.54" | 3508 × 4960 px |
| A2 | 420 × 594 mm | 16.54" × 23.39" | 4960 × 7016 px |
| A1 | 594 × 841 mm | 23.39" × 33.11" | 7016 × 9933 px |
Create International Print Designs in Figma
Use Print for Figma to work with A4, A3, and other ISO sizes. Export print-ready PDFs with CMYK, bleed, and crop marks at 300 DPI.
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