Japanese JIS Paper to PX Converter

Tool Introduction

This tool is an online JIS paper to PX converter specifically designed for designers, developers, and printing professionals. It can accurately calculate the pixel dimensions (width and height) of a paper in a screen or digital media based on the user's selected Japanese JIS standard paper size (such as A series, B series, and corresponding numbers) and specified dots per inch (DPI). Say goodbye to manual lookups and complex calculations, get precise PX values with one click, ensuring your design works are perfectly presented in different DPI environments and perfectly adapted to various design drafts and print output requirements.

Origin and Standards of JIS Paper Sizes

Japanese JIS (Japanese Industrial Standards) are the national industrial standards of Japan. In terms of paper sizes, JIS standards are closely related to the international ISO 216 standard. JIS A series paper sizes are completely consistent with ISO A series, for example, the size of A4 paper is 210mm x 297mm in both JIS and ISO standards.

However, JIS B series paper sizes differ from ISO B series. The size of JIS B series paper is approximately 1.22 times that of the corresponding ISO A series paper; specifically, the area of JIS B series paper is 1.5 times the area of A series paper. For example, JIS B4 size is 257mm x 364mm, while ISO B4 size is 250mm x 353mm. This tool strictly adheres to these JIS standards during calculation to ensure the accuracy of the results.

How to Use

1. Select JIS Paper Series: In the tool interface, select the Japanese JIS paper series you want to convert, such as "A Series" or "B Series".
2. Select Paper Size: Based on the selected series, further select the specific paper size number, such as "A4", "B5", etc.
3. Enter DPI Value: In the DPI input box, fill in the DPI (dots per inch) value of your target device. DPI is usually a positive integer, such as the common web DPI 96, or high-resolution print DPI 300.
4. Click Convert Button: After confirming all parameters are correct, click the "Convert" button.
5. View Results: The tool will instantly display the calculated pixel values (PX) for the paper's width and height.

Usage Examples

Below is an example of converting JIS A4 paper size to pixels:

• Operation Demonstration:
  1. Select "A Series" in "JIS Paper Series".
  2. Select "A4" in "Paper Size".
  3. Enter "96" in the "DPI" input box.
  4. Click the "Convert" button.
• Input Data:
  • JIS Series: A Series
  • Paper Size: A4
  • DPI: 96
• Expected Output Result:
  • Width: 794 PX
  • Height: 1123 PX

Another example (common print 300DPI):

• Input Data:
  • JIS Series: A Series
  • Paper Size: A4
  • DPI: 300
• Expected Output Result:
  • Width: 2480 PX
  • Height: 3508 PX

Frequently Asked Questions

• Q: What is the calculation basis for JIS paper to PX conversion? A: This tool calculates the corresponding pixel (PX) value based on the physical dimensions in millimeters (mm) of JIS standard paper, combined with your input DPI (dots per inch) value, using the formula of converting millimeters to inches and then multiplying by DPI.
• Q: Which JIS paper sizes are supported for conversion? A: This tool supports Japanese JIS standard A series and B series paper sizes, typically including common sizes from A0 to A10, and B0 to B10.
• Q: How should I choose the DPI value? A: DPI (Dots Per Inch) is a key parameter. If you are designing for web or screen, you will usually use 96 DPI; if it is for high-resolution print products, you may need 300 DPI or higher. Please choose the appropriate DPI value according to your specific use to ensure accurate matching of physical and pixel dimensions.
• Q: Are the output pixel values accurate? A: The output results are rounded to the nearest integer pixel value to meet actual pixel display requirements.
• Q: What is the difference between JIS and ISO paper standards? A: JIS A series paper sizes are the same as international ISO A series sizes. However, for the B series, JIS B series paper sizes differ from ISO B series; the area of JIS B series paper is 1.5 times the area of A series paper, rather than the typical √2 times for ISO B series. This tool strictly calculates according to JIS standards.

Notes

• Please ensure that the DPI value you enter is accurate, as DPI directly determines the final pixel conversion result. Different DPIs will produce vastly different pixel dimensions.
• This tool strictly follows Japanese JIS paper standards for calculation. If you need to convert ISO standard paper, please note that there are size differences between JIS B series and ISO B series.
• The pixel values of the conversion results will be rounded to an integer to adapt to the digital display environment. Please be aware of this in scenarios requiring extremely high precision.
• This tool only provides size conversion functionality and does not involve color management or print quality optimization. Please combine it with other professional tools for complete design work.