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Convert physical business card dimensions to pixel values. Supports custom DPI settings for both print design and screen display scenarios.
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Convert binary data to uuencoded text and vice versa online. Supports full format parsing, ideal for processing legacy emails and files.
SHAKE Hash Generator
Variable-length hash generator for SHAKE-128/256, featuring salt support, multiple iterations, and various input/output formats.
RIPEMD Hash Generator
Generate RIPEMD-128, RIPEMD-160, RIPEMD-256, and RIPEMD-320 hashes online. Supports text, Hex, and Base64 inputs.
Keccak Hash Calculator
Online hash tool supporting Keccak-224, 256, 384, and 512 algorithms. Features custom salt, iterations, and multiple input/output formats.
UUencode & UUdecode Tool
Convert binary data to uuencoded text and vice versa online. Supports full format parsing, ideal for processing legacy emails and files.
SHAKE Hash Generator
Variable-length hash generator for SHAKE-128/256, featuring salt support, multiple iterations, and various input/output formats.
SHA Hash Calculator
Online hash generator and verification tool supporting SHA1, SHA256, and SHA512 algorithms, featuring advanced salting and multi-round iteration options.
Designers often need to convert physical business card dimensions into digital pixel values, but manual calculations can lead to errors. This tool uses the standard conversion formula (Pixels = Millimeters × DPI ÷ 25.4) to accurately convert the physical size of a business card (in millimeters) into the pixel dimensions required for screen or print. Business card sizes typically refer to standardized physical width and height specifications, such as 90 × 54 mm, while DPI (Dots Per Inch) determines the pixel density within a unit of length.
Q: How many pixels is a 90 × 54 mm business card at 300 DPI?
A: 1063 × 638 pixels. The calculation formula is: 90 × 300 ÷ 25.4 ≈ 1063px, and 54 × 300 ÷ 25.4 ≈ 638px.
Q: What is the difference in DPI requirements for print and screen display?
A: Printing requires a high DPI (300+) to ensure sharpness, while 72-96 DPI is sufficient for screen display. An excessively high DPI will generate unnecessarily large files, so choose based on your actual use case.
The input millimeter value must be greater than 0, and the recommended DPI range is between 72 and 600. The results do not account for bleed areas; please confirm the actual specifications with your printer before printing. This tool does not store any input data, making it safe for processing commercial design files.
We recommend using preset sizes first to avoid dimension errors. A typical example: the US standard 3.5 × 2 inches (88.9 × 50.8 mm) outputs 1050 × 600 pixels at 300 DPI. Note the conceptual difference between DPI and PPI: DPI for print refers to ink dot density, while PPI for screens refers to pixel density, though the calculation logic is the same.
