How to Measure a Wound With Your Phone: A Step-by-Step Clinical Workflow

Manual rulers, cotton swabs, and tracing paper give you numbers, but they're operator-dependent and hard to defend in an audit. Here's how to measure a wound consistently using your phone.

1. Set the scene

• Clean the wound bed and remove dressings before capture.
• Position the patient so the wound plane is roughly perpendicular to the camera.
• Ensure ambient lighting is even — avoid shadows across the wound edge.

2. Frame the shot

Hold the phone 8–12 inches from the wound. On-screen distance and angle guidance keeps captures reproducible visit over visit — the same framing today and in six weeks means the trajectory is real, not artifactual.

3. Let the AI trace the edge

AI-powered wound imaging auto-outlines the wound border and returns length, width, and surface area. Review the outline; nudge control points if the edge is ambiguous (macerated skin, tunneling openings).

4. Capture depth

A 3D reconstruction estimates depth and volume — the two dimensions a flat photo can't give you. This is what turns a picture into a measurement you can trend.

5. Log tissue composition

The draft breaks the bed into granulation, slough, eschar, and epithelial percentages. Edit before signing so the note reflects what you actually saw.

6. Trend it

Measurements flow into the healing dashboard automatically, so week-over-week percent area reduction is a byproduct of documenting — not a spreadsheet chore.

Works in clinic, at the bedside, and on home visits. Start free at WoundScribe AI.