Compare Sizes is a free tool for seeing how big something actually is. Enter the dimensions of any two objects — in inches, feet, centimetres, millimetres or metres — and it draws them side by side in 3D, to scale. Every comparison you save gets its own link you can share.
The site is run by Oblouk LLC.
The way to reach a person is comparesizessite@gmail.com. Questions about the tool, corrections, takedown requests and advertising all arrive at the same address.
Saved comparisons are public and can show up in search results. If one of yours should come down, send its link to the address above and it will be removed.
Dimensions come from manufacturers and public listings, and they are sometimes wrong. Send the link to the page along with the correct figure and where it comes from, and it will be fixed.