All tools
Each tool runs entirely in your browser and shows the measurements behind its answer. Anything marked as in development is not live yet, and is listed so you can see where this is going.
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Pupillary distance measurement
Single PD, dual PD and near PD in millimetres, from your iris rather than a bank card, averaged across sixty frames with a published confidence range.
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Frame size finder
Measures your face width and PD, then searches real manufacturing sizes for fronts that fit both — and says how much the two constraints had to be traded against each other.
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Frame size decoder
Decode the 52-18-140 numbers inside your glasses. Works out the frame's own PD, how far each lens must be decentred to suit you, and what that costs in thickness.
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Lens thickness calculator
Edge and centre thickness across six materials from CR-39 to 1.74, including the decentration and the governing meridian that free calculators quietly omit — and a verdict that will tell you not to bother.
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Reading glasses strength calculator
Your reading addition from age and the distance you actually read at, not a generic rack chart — including when the honest answer is to take your distance glasses off instead.
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Progressive lens fit checker
Whether a frame is deep enough for progressive lenses, compared against the published minimum fitting height of every design class, with what a short corridor costs in reading width.
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Eye prescription reader
Every line of your glasses prescription in plain words, including the transposition trap that makes the same lens look like two different ones, and which lens index is worth paying for.
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Contacts and glasses converter
Vertex-distance compensation between the spectacle plane and the corneal plane, with the full chart from -1.00 to -12.00 and +1.00 to +8.00.
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Visual acuity converter
20/20, 6/6, decimal and logMAR are one quantity written four ways. Converts all four, and explains what legal blindness actually requires.
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Personal colour analysis
Twelve-season palette measured from a photo, white-balanced against the whites of your eyes so the room's lighting doesn't decide your season.
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Skin undertone finder
Cool, warm or neutral, measured in CIE Lab after correcting the room's lighting out — with an olive prompt when the reading warrants one.
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Foundation shade matcher
Your depth on the ITA scale and your undertone column, sampled along the jaw where foundation is actually matched. A coordinate for any counter, not a fabricated brand shade.
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Face shape detector
Seven shapes from four measured widths and one length — with every ratio, every threshold and every rule that was tested printed alongside, including the ones that did not fire.
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Hairstyle guide by face shape
What a haircut actually does to the proportions of a face: which part of the outline it widens, how far it moves the apparent length, what your hair texture can hold, and what each one costs to keep. No rankings and no "best for" anywhere.
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Face shape calculator without a photo
Your face shape from four tape measurements, no camera and nothing uploaded. The length is converted to match what the photo tool measures, and every result says which other shapes the error bars reach rather than printing one confident answer.
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Face symmetry test
Eleven paired features measured in millimetres against a fitted midline, so head tilt is not mistaken for an uneven face. No score, because there is nothing to pass.
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Body shape calculator
Proportions from bust, waist and hip, with every ratio and threshold shown. No weight, no BMI, no ideal.
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Blur faces in a photo
Cover every face before sharing a photo. Blur, pixelate or block, uncover anyone who consented, and the saved copy loses its GPS metadata too.