Free Tool · For PMU Artists

    Brow Mapping Calculator

    The golden-ratio brow map every PMU artist learns, done in the browser. Enter three measurements from the client and get the head, arch and tail coordinates, ideal length, and thickness range.

    PMU artist mapping golden-ratio brows with a caliper and string
    01

    Measurements

    Adult average: 58–68 mm. Use a PD ruler or measure from pupil to pupil.

    Distance from the upper lash line to the lower edge of the natural brow.

    Used to sanity-check brow length against face proportion (0.28–0.34 is standard).

    02

    Mapped brow

    Brow head (from midline)-32 mm
    Arch peak (from midline)36.8 mm
    Brow tail (from midline)59.2 mm
    Total brow length91.2 mm
    Ideal thickness (mid-body)9.2 mm
    Arch height above lash line25.2 mm
    Length ÷ face width0.65 ⚠ outside 0.28–0.34

    Numbers are measured from the vertical face midline. Negative = left of midline. Always confirm on the client with pre-draw before pigment.

    How the mapping works

    Traditional PMU brow mapping (Phibrows, Anastasia, and Korean 3D methodologies) uses three landmarks: the brow head aligns vertically with the inner corner of the eye, the arch falls at roughly 2/3 of the eye-to-tail line — directly over the outer edge of the iris — and the tail lands on the diagonal drawn from the nose wing through the outer canthus. This calculator computes those coordinates from pupil distance alone; the rest of the ratios are locked to golden-ratio norms used in professional PMU training.

    Once you have the numbers, transfer them to the client's face with a brow mapping string, caliper, or the FNS pre-draw grid before starting pigment. The whole point of mapping is to work at the same scale on the skin as on the calculator.

    Next: Pick pigment by Fitzpatrick type →

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    Brow mapping

    Brow mapping questions artists ask

    How do you map brows using the golden ratio?
    Three vertical reference lines: the head sits above the inner corner of the eye, the arch falls at roughly two-thirds along the brow over the outer edge of the iris, and the tail lands on the diagonal running from the nose wing through the outer corner of the eye. This calculator computes all three in millimetres from the client's pupil distance.
    What measurements do I need for brow mapping?
    Three: interpupillary distance (average adult 60–66 mm), brow height above the lash line (typically 18–26 mm), and face width across the cheekbones. Everything else is derived from those.
    Where should the brow arch sit?
    Directly above the outer edge of the iris, about two-thirds of the way from the brow head to the tail — roughly 1.15× half the pupil distance from the facial midline. Placing it above the pupil centre reads as surprised once healed.
    How thick should the brow be?
    A natural-looking body is about 40–45% of the brow height above the lash line. At a 22 mm brow height that is roughly 9 mm at the thickest point, tapering through the arch to the tail.
    Is brow mapping different for Asian face shapes?
    The ratios hold, but flatter brow bones and a shorter distance from lash line to brow mean the arch usually sits lower and softer. Map to the client's own bone structure rather than forcing a high arch.
    Is this brow mapping calculator free?
    Yes — free, no signup, and it runs entirely in your browser. Nothing you enter is stored or sent to a server.