Convert RA/SRA print paper dimensions (mm) to pixels. Supports custom DPI settings to meet your digital design and print output needs.
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Are you struggling with mismatched digital canvas sizes and physical paper dimensions when designing print materials? This tool accurately converts the physical dimensions (in millimeters) of international standard RA/SRA series paper into pixel dimensions (PX) based on your specified DPI (dots per inch). RA and SRA are untrimmed paper sizes commonly used in the commercial printing industry. They are slightly larger than the standard A-series finished sizes, specifically designed to accommodate bleed areas for trimming.
Q: What are the pixel dimensions of SRA3 at 300 DPI?
A: 3780 × 5315 pixels. This calculation is based on the physical SRA3 size of 320 × 450 mm, converted at 25.4 millimeters per inch.
Q: What is the difference between RA and SRA paper?
A: The RA series provides a basic trimming allowance, while the SRA series offers a more generous bleed space. For example, SRA3 (320 × 450 mm) is larger than RA3 (305 × 430 mm), ensuring that the A3 (297 × 420 mm) design content is perfectly preserved after print trimming.
Please set the DPI according to your final output medium: 300+ is recommended for print, while 72-96 is sufficient for screen display. The conversion results are rounded to the nearest whole number to meet practical design needs. RA/SRA are untrimmed sizes specifically for commercial printing; do not confuse them with the finished A-series sizes.
In professional print design, it is recommended to always use 300 DPI to ensure output sharpness. Typical examples: SRA3 (320 × 450 mm) @ 300 DPI = 3780 × 5315 px, which can be directly set as your InDesign or Photoshop canvas size; RA4 (215 × 305 mm) @ 72 DPI = 609 × 865 px, suitable for web preview drafts. Note that if your digital canvas requires a 3 mm bleed, you should add this extra allowance on top of the pixel results.
