Compare any two objects by size. Enter custom dimensions and instantly see them rendered to scale. Perfect for shopping, design, education, and curiosity.
Quick presets (click to load into Object A):
How does the custom size comparison tool work?
Enter the width and height of any two objects in millimeters, centimeters, or inches. The tool instantly renders both shapes to scale side by side, showing their relative sizes with percentage differences.
Can I compare objects that are not in your database?
Yes! That is the purpose of this tool. Whether you need to compare a custom furniture piece, a product you are designing, or any object with known dimensions, just enter the measurements and see the visual comparison.
What unit should I use?
The tool supports millimeters (mm), centimeters (cm), and inches (in). You can switch units at any time — all measurements are converted automatically and the visual comparison updates instantly.
How accurate is the visual comparison?
The comparison is mathematically accurate. Both shapes are rendered at the exact same scale, so the proportions you see on screen match real-world proportions exactly. No distortion, no exaggeration.
What can I use this tool for?
Online shopping (understand product sizes before buying), interior design (visualize furniture dimensions), educational purposes (teach scale and proportion), packaging design, or simply satisfying curiosity about how two objects relate in size.