Scale ruler

Upload a photo, scan, or diagram. Draw a line on a dimension you already know, enter its real-world size, and the image is scaled. Use the tape measure or angle tool for anything else. Zoom with the mouse wheel or pinch. Export a PDF with scale bar for accurate printing at 1:10, 1:50, 1:100 and more. Everything runs in your browser — your file never leaves your device.

Drop an image here

Choose a file, drag & drop, or paste (Ctrl+V)