Actual Size Preview

Enter width × height or a diameter and the shape is drawn on your screen at real size. Use it when an online shop lists a product's size only in numbers and you want to see how big it really is.

How to use

1. On your first visit, press "Calibrate screen" and match the screen to a card or a coin.
2. Enter the "Width", "Height" and "Unit" (mm, cm or inch). For a round object, change "Shape" to "Circle" and enter the "Diameter".
3. To compare several objects, press "Add a size" and choose "Overlapping" or "Side by side" under "Arrangement".
4. Under "Compare with a known object", pick a card, a coin, a sheet of paper or another object to draw it beside your sizes. "Copy link" shares the sizes with someone else.

How it works

• If a size does not fit on the screen, it is drawn smaller at a scale such as 1:2, 1:5 or 1:10, and the scale is shown in large type.
• "Show a photo at real size" displays a product photo at the width you set; the height follows the picture's proportions. The photo stays on this device and is not part of the share link.
• The table below the drawing lists every size in mm, cm and inches.

Questions and answers

How big is 30 cm in real life?

Enter 30 as the width or height and choose cm; it is drawn at that length. If it does not fit, it is drawn to scale, so choose A4 or Letter paper as the known object to compare it with.

Why does the size on my screen look wrong?

The screen is probably not calibrated yet. Press "Calibrate screen" and match a card or a coin, and the shapes are drawn at real size.

How do I convert inches to cm?

Multiply the inches by 2.54. Enter the size in inches and the table shows it in mm and cm as well.