Tool library

Tools

Free PixelMeasures tools for DPI, pixels, aspect ratios, print bleed, image resizing, social media presets, and size comparison.

Last checked: 2026-05-01

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This hub

Start with the job: convert physical size to pixels, check DPI, resize an image, add print bleed, or compare two formats.

Last checked: 2026-05-01 Source: MDN Web Docs: CSS length units Found a spec change? Send correction.

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Pick the calculator for the job

PixelMeasures tools are lightweight browser utilities built around focused pages. Each calculator has its own URL, while presets and selections stay inside the tool instead of becoming a separate page for every possible calculation.

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Unit converters

Convert millimeters, centimeters, inches, and pixels with the DPI or PPI value that matches the job.

5 tools

Unit converters MM to Pixels Convert millimeters to pixels at any DPI or PPI for print artwork, paper sizes, labels, stickers, and layout exports. Convert metric print measurements into exact pixel targets. Unit converters Pixels to CM Convert pixels to centimeters using any DPI or PPI to estimate print dimensions and physical output size. Estimate the metric print size of a pixel dimension. Unit converters Pixels to Inches Convert pixels to inches at any DPI or PPI to estimate print size, output dimensions, and image sharpness. Find the physical inch size of a pixel dimension at a chosen DPI. Unit converters CM to Pixels Convert centimeters to pixels at any DPI or PPI for print layouts, photos, posters, flyers, and design exports. Turn centimeter specs into pixel dimensions for print or layout work. Unit converters Inches to Pixels Convert inches to pixels at any DPI or PPI for US paper sizes, photo prints, banners, ads, and canvas setup. Convert inch-based print and photo sizes into pixels.

Print setup

Check print sharpness, bleed, trim size, and pixel dimensions before sending artwork to production.

3 tools

Print setup DPI Calculator Calculate DPI or PPI from physical size and pixel width to check print sharpness, canvas setup, and image export quality. Check print sharpness from physical size and pixel width. Print setup Print Bleed Calculator Calculate print bleed size from trim width, trim height, bleed per side, and DPI for print-ready canvas setup. Add bleed to trim dimensions and calculate print-ready canvas size. Print setup KDP Cover Size Calculator Calculate Amazon KDP paperback and hardcover cover size from trim size, page count, paper type, bleed, and DPI. Calculate KDP cover width, height, spine, bleed, and pixels from trim size and page count.

Image sizing

Work out aspect ratio, resize images, and prepare export dimensions for digital or print use.

2 tools

Image sizing Aspect Ratio Calculator Calculate aspect ratio from width and height, including reduced ratio and decimal value for images, videos, banners, and canvases. Reduce width and height into a clean aspect ratio. Image sizing Image Resizer Resize an image locally in the browser using custom pixel dimensions or PixelMeasures presets for platforms, print, and design exports. Resize a local image to a custom size or PixelMeasures preset.

Size comparison

Compare two formats before adapting artwork, choosing a canvas, or explaining a size difference.

1 tools

Size comparison Compare Sizes Compare paper, platform, print, screen, and image presets side by side using clean fragment state such as #a=paper.a4&b=paper.us-letter. Compare dimensions, area, and aspect-ratio differences.

Social platform tools

Resize images against platform presets for covers, thumbnails, stories, pins, banners, and profile graphics.

1 tools

Social platform tools Social Media Image Resizer Resize images to social media presets for covers, thumbnails, stories, pins, banners, shop assets, and profile graphics. Resize images to platform presets for social and creator placements.

Print checkIs my file sharp enough? Image exportResize to exact pixels Print setupAdd bleed to a trim size Decision helperCompare two formats

Fresh entries in this library

KDP Cover Size Calculator Inches to Pixels Compare Sizes CM to Pixels Social Media Image Resizer Print Bleed Calculator

Related pages and tools

guide Social media image sizes guide

FAQ

Common questions

Which PixelMeasures tool should I use first?

Use the DPI calculator for print sharpness, the unit converters for physical-to-pixel math, the image resizer for exported files, the print bleed calculator for trim-safe artwork, and the compare tool when you need to choose between formats.

Can I share selected tool settings?

Some PixelMeasures tools keep selected presets in the URL fragment, so a shared link can reopen useful choices while the main tool page stays focused.

Do PixelMeasures image tools require an account?

No. The tools are designed for quick browser use without an account.

Why does each calculator have its own page?

Each tool has a focused page so you can land directly on the calculator you need, while the shared layout keeps the experience consistent across the toolkit.

Source

Official source

Tool formulas use CSS unit specifications, image-resolution references, and browser implementation documentation where relevant.

MDN Web Docs: CSS length units
Used for CSS units, absolute lengths, relative lengths, viewport units, and browser sizing behavior.
W3C CSS Values and Units Module
Used for CSS unit definitions, absolute unit relationships, and CSS px behavior.
Adobe Photoshop image size and resolution
Used for pixel dimensions, image resolution, resampling, and print PPI concepts.
WHATWG HTML canvas specification
Used for browser canvas image drawing and resizing behavior.

Last checked: 2026-05-01