Free tool · runs in your browser
Lash Map Tool
Find your lash map from one photo. The tool marks the five zones a lash artist uses on your own upper lid, reads your eye opening, corner direction and spacing, picks the map that suits them (natural, open eye, doll eye, squirrel or cat eye) and draws it on your eyes at true length in millimetres.
Drop a photo, paste one, or choose a file
Straight-on, whole face visible, even light. JPG, PNG or WebP.
Runs in your browser. Your photo never leaves your device.
How it is measured
Five zones on your lid, three readings of your eye.
Lash maps divide the lash line into zones and give each a length; where the longest lashes sit decides the look. The tool traces your upper lid and marks five points: inner corner, inner edge of the iris, iris centre, outer edge of the iris and outer corner. It measures how open the eye is (height ÷ width), the canthal tilt and how far apart the eyes are, and scores each map against the pairing rules lash guides use. Lengths are drawn at true scale using your iris (about 11.7 mm across) as the ruler.
- Round, open eyes
- Cat eye or squirrel: length at the outer end stretches the eye.
- Narrow or almond eyes
- Doll or open eye: length over the iris opens the eye up.
- Downturned corners
- Squirrel or open eye; a cat eye pulls the corner further down.
- Close-set eyes
- Cat eye: length at the outer corners widens the gap visually.
- Wide-set eyes
- Doll or natural: length at the centre draws the eye inward.
What's normal
The five lash maps
Lengths in millimetres from inner corner to outer corner. Artists adjust them to your natural lashes; these are typical starting maps.
- Natural
- Zones (mm): 8 · 9 · 10 · 11 · 10
- Look: Follows natural growth; longest over the outer iris.
- Open eye
- Zones (mm): 8 · 10 · 11 · 11 · 9
- Look: Length held across the iris: taller, rounder eye.
- Doll eye
- Zones (mm): 8 · 10 · 12 · 10 · 8
- Look: Longest at the centre: wide, round look.
- Squirrel
- Zones (mm): 8 · 9 · 10 · 12 · 9
- Look: Peaks at the outer iris, then drops: a lift without dragging.
- Cat eye
- Zones (mm): 7 · 8 · 9 · 11 · 12
- Look: Longest at the outer corner: elongated, flicked look.
Sources
What this is based on.
The measurement and its reference ranges come from published research. Studies use different methods and populations, so compare your number with the range shown on this page rather than with other tools.
- 1.
Rhee SC, Woo KS, Kwon B (2012). Biometric study of eyelid shape and dimensions of different races with references to beauty. Aesthetic Plastic Surgery. PubMed 22810555
Eyelid shape and opening measured across ethnic groups. Lash maps themselves are a salon convention, not a research standard.
- 2.
Rüfer F, Schröder A, Erb C (2005). White-to-white corneal diameter: normal values in healthy humans obtained with the Orbscan II topography system. Cornea. PubMed 15778595
Corneal diameter averaged 11.71 mm in adults: the scale used to draw lashes at true length.
Our own data: how much each reading moves when the same face is photographed again is published on the methodology page. How we choose sources.
Related tools
Eyebrow Mapping Tool
Brow start, arch and tail on your face.
Eye Shape Guide & Self-check
Crease, outline and direction.
Canthal Tilt Calculator
Eye-corner angle in degrees.
Eye Spacing Test
Inner-corner gap vs eye width.
Hunter Eyes Test
Tilt, aperture and brow distance.
Pretty Scale Test
A measured pretty-scale percentage.
FAQ
What is lash mapping?+
The plan drawn before lash extensions or clusters go on: the lash line split into zones, each with a length and curl. The map decides the shape of the finished set.
Which lash map suits my eye shape?+
Upload a photo: the tool reads your eye opening, corner direction and spacing and picks the map. As a rule of thumb, round eyes suit cat eye and squirrel, narrow eyes suit doll and open eye, downturned eyes suit squirrel.
Can I use this for strip lashes or clusters?+
Yes. The same map tells you where the longest pieces should go when you place clusters or trim a strip.
How accurate are the lengths?+
They are drawn using your iris as a ruler, so they are close but not exact. Your lash artist will adjust lengths to your natural lashes and curl.
Can it see hooded eyes?+
Not reliably from one flat photo: the fold that hides the lid is depth, not outline. If your lids are hooded, longer lengths and a stronger curl are usually needed to show past the fold.
Is my photo uploaded?+
No. Everything runs in your browser.
One reading here.
Nineteen in the app.
A controlled scan, every reading against its ideal band, bone vs trainable, a plan, and a 3D model on Face ID iPhones.