by FOURKOU — Free building measurement tool
JPG, PNG or WEBP. Clearer photos give more accurate results.
Draw on something whose real size you know (door = 80 in, brick = 3.5 in, credit card = 3.375 in). Reference lines show as small squares labeled R1, R2...
Type the real size for each reference line and click Apply scale.
Draw lines anywhere. Use Snap straight to lock to horizontal or vertical. Zoom in for precision.
Export as PDF, Excel, PNG or DXF with all measurements and notes.
or browse files — JPG, PNG, WEBP