Diffen publishes comparisons across topics including health, science, technology, food, business, and insurance.
Compare Sizes
Compare the size of two objects side by side in 3D and save the comparison in your browser.
About Compare Sizes
Compare Sizes is a visual tool for comparing objects side by side in 3D drawn to scale. Users enter an item name with width, height and depth in units including inches, feet, centimetres, millimetres and metres, or start from preset common items such as a credit card, soda can or letter paper.
Comparisons can be viewed from 3D, front, side and top angles, saved in the browser, saved as images, and shared through a link or embed code.
Key features
- Compare objects side by side in 3D drawn to scale
- Enter width, height and depth in multiple units
- Use preset common items like credit card and soda can
- View comparisons from front, side, top and 3D angles
- Save comparisons in browser and save comparison images
- Share each comparison with its own link or embed code
Best for: People comparing the relative size of electronics, PC cases, and everyday objects.
Good for
- Draws entered dimensions to scale in 3D with front, side and top views
- Accepts dimensions in many units, from nanometers to miles
- Provides a shareable link and embed code for each comparison
Compare Sizes at a glance
- Website
- comparesizes.com
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- iOS, Web
- Open source
- Not stated
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Compare Sizes FAQ
How do I create a size comparison?
Enter an item name and its width, height and depth, add more objects as needed, and view them drawn to scale.
Can I save or share a comparison?
Comparisons can be saved in the browser, saved as an image, and each comparison gets its own link for sharing or embedding.
What measurement units can I use?
Inches, centimeters, millimeters, feet, meters, yards, miles, nanometers, kilometers and micrometers.
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