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Caliper Lens
Photo Measurement Tool
EngineeringRuns in your browserBuy Once · Own Forever
About
Measures real-world distances in any photo by calibrating against a known reference object — a credit card, a dollar bill, a coin.
Pure arithmetic: pixel span to real-world scale via a single ratio.
Encrypted measurement history for documentation.
What's Included
- ✓Measure any distance in a photo using a known reference object
- ✓Supports any reference: credit card, dollar bill, or coin
- ✓Instant pixel-to-real-world scale conversion in mm and inches
- ✦Encrypted measurement history with labeled photos for professional documentation.
Everything above is included in a single one-time purchase. No subscription. No in-app purchases. No feature gating.
Pricing
In your browser
Free
The full tool, not a trial. No account, no time limit, nothing leaves your device.
Tidemill Pro · optional
$12 once
Encrypted backup and restore across all 33 tools. One payment, no subscription.
Pro only adds backup. Nothing that is free today will move behind it. What Pro includes →
Get It
🌐Free · full toolTry Web Version →
Full tool — runs entirely in your browser. No account, no install.
Native iOS and Android builds are planned. The web version above is the complete tool today. Questions? Support →
Privacy
- ◆No account required — open the app and use it
- ◆No internet connection needed — fully offline
- ◆All data AES-256 encrypted on your device
- ◆Photo access: only the image you explicitly select — library is not scanned
App Info
Keywords
measurecaliperphotorulermmpixelsreferencescale
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