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Snake Measurer

Measure Your Snake's Length from Photos

Measure length from a photo, auto-detect with AI, and track every snake's growth over time. Free, and works on any device.

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Snake Measurer: a corn snake traced with 29 points beside a ruler, result 46.8 cm
Snake Measurer app tracing a snake's length from a photo next to a reference ruler, result 46.6 cm

How It Works

1

Upload a Photo

Take a photo of your snake next to a reference object like a ruler or a card.

2

Set the Reference

Mark two points on the reference object and enter its known size.

3

Measure the Snake

Trace points along the body — or let AI auto-detect it. The app calculates the real length instantly.

Two years of her, on one line

Every measurement is saved to the animal’s profile. Already have photos from last year? Add them — each measurement is dated from the photo itself, so the curve fills in backwards.

Growth chart from Snake Measurer: three snakes measured from May 2024 to September 2026, rising from 34 to 118 cm

Features

Precise Measurements

Pixel-accurate calculations based on reference object scale.

AI Auto-Detect

Let AI trace your snake and the reference for you — no careful tapping.

Growth Charts

Track length and growth rate over time with clear charts.

Multiple Profiles

Keep a separate profile and history for every snake you own.

Sync & Offline

Works offline; sign in to back up and sync across your devices.

Multiple Units

Centimeters, millimeters, meters, inches, or feet — your choice.

Frequently Asked Questions

Upload a photo of your snake with a reference object (ruler, card, etc.). Mark the reference, enter its size, then trace along your snake's body. The app uses the reference scale to calculate the real length.

Yes. Pick any photo from your gallery — the measurement is dated from the photo itself, not from today. Add a few old pictures and the growth chart fills in backwards, so you’re not starting from zero.

Any object with a known size: a ruler, a card (85.6 mm), coin, or anything you can measure. Place it next to your snake in the photo.

Accuracy depends on the photo. Shoot straight down with the whole snake in frame and the reference object flat beside it, and avoid wide-angle distortion. In good conditions the result lands within about 5% of the real length — measured carefully, usually 1–2%.

Yes! The free version includes measuring, growth charts, CSV export, and cloud sync. Premium unlocks unlimited saved measurements, multiple snake profiles, and AI auto-detect.

Your snake is one photo away from a number.

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