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Three guides in print put the border where oblong starts at 1.5, 1.6 and 1.75, all published inside ten months. This site's rule set puts it at 1.65. Here is what each one divides by, what your tape reading means under each, and how to settle oval or oblong on your own face.

No tape measure? A piece of string, a ruler, or even a bank card is enough, because face shape depends on ratios, not absolute sizes. Here is the tool-free method and its limits.

Three different beard-length specs are published for a round face and they disagree. Here is both zones in millimetres, inches and clipper guard numbers, and the reasoning that picks between them.

Contour a round face along the line where your own face turns from front to side. How to find that line on yourself, and what eight years of published placement advice changed.

Five published guides say an oval face can carry almost any beard. None commits to a length. Here are both zones in millimetres, inches and clipper guards, the five specs side by side with their dates, and the measurement at which versatile stops being true.

The best blush placement for a round face runs on the line where your face turns from front to side. How to find it on yourself with two anchors, and why the two-finger rule fails on exactly the faces it is sold to.

Where to put blush on an oval face: a level, centred band across the cheekbone, not the upward sweep a round face needs. The best blush placement for an oval face, with the angle, the dose and ten published guides side by side.

Round glasses for a square face: the frame width in millimetres, the decentration formula, ten years of fitting advice set side by side by date, and the three conditions under which a round frame goes too round.

The best glasses for a round face are a fitting problem before they are a shape problem: every eyeglasses frame number in millimetres and inches, the decentration and blank-size arithmetic that decides what can actually be made, and nearly eight years of eyeglass-fitting and round-face advice set side by side by the date it was published.

The soft angled arch, where the peak actually belongs, and the three settings that change a round face — plus every published position since 2023, in date order.

The best eyebrow shape for an oval face, what changes if yours is a long oval, and every published position on it since December 2023, in date order.

Straight or arched, short tail or long: every position given to an oblong or long face since October 2021, in date order, with the arithmetic worked out.

Round, sharp or arched: every brow position given to a heart-shaped face since September 2013, in date order, with the forehead arithmetic worked out.

Eyebrow shape for a square face: nine dated positions since November 2013, the bend measured against the jaw's own corner, and the band between them in millimetres and inches.

Where contour goes on a square face: the four corners, every stop in mm and inches, seven years of dated placement advice compared, and the jaw decision all six guides skip.

A rectangle face runs 1.47–1.83 times as long as it is wide, with near-parallel widths and a cornered jaw. Measure it at home, then style the length.

Inverted triangle is not an eighth face shape on this site — it falls inside heart. The five measured checks, and the three that separate heart from triangle.

Pear is not an eighth shape on this site — the label sits inside the triangle column. The five measured bands, and the one check that nearly parts it from square.

Glasses for an oval face, sized in millimetres: five frame parameters laid out across oval, round and square, the published size ladder a cheekbone measurement picks, and the one row your outline actually moves.

Sunglasses for a round face, sized in millimetres: the five frame parameters laid out across five outlines, the lens-height ceiling that a cheekbone measurement sets, and the checks no photograph can make.

Glasses for diamond face shape, sized in millimetres: five frame parameters laid out across diamond, oval and heart, the decentration and lens-blank arithmetic that decides how deep a lens you can actually order, and the one row your outline moves.

Glasses for heart shaped face, sized in millimetres: five frame parameters across heart, diamond and round, the one row your outline moves, the twelve-millimetre stretch where this site's own rule set has no label for you, and which line of your face the total width has to clear.

What do the numbers on glasses mean, in millimetres: what the three figures stamped on the temple arm settle by themselves, the frame PD sum hiding in the first two, the pupillary-distance window each size opens under two published ceilings, and the two fit tests no stamp can answer.

How to measure glasses frame size in millimetres and inches: the four different rulers behind the published width charts, the pupillary-distance subtraction that decides which lens width a frame can pay for, and what changes when you hold the bridge steady instead of the front.

Bridge width glasses buyers are handed: the 14 to 24 mm band, what the stamped middle number is measured between, the two published rules that estimate it without a tool and why their windows do not coincide, and what the number does to a lens width when the sum is held still.

Glasses temple length read off the head instead of off the arm: the printed ladder, the one published rule that anchors an arm to a point behind your ear, the subtraction that turns every stamped size into the stretch of head it can serve, and what a tape really reads when it goes along a bent arm.

Glasses frame width is printed in millimetres by five of the thirteen pages read for this guide — three of them as a ladder of named rungs — and it is measured along at least four different line segments. Here is the conversion that turns those bands into a number you can buy to.

Why are my glasses lenses so thick? The answer is a measurement that is stamped on no frame and is not even an input to the trade's own lens thickness calculator. Here is the arithmetic, in millimetres.

Earring length, measured against the face instead of the ear: the millimetre gap from earlobe to chin at every published face-length ratio, and where a listing's 25, 50 or 80 mm actually stops.

Hairstyles for rectangle face shape are sold as directions — add width at the sides, avoid height on top — never as numbers. Here is what one millimetre of each is worth, on this site's published 1.47–1.83 band, in millimetres and inches.

An earring size chart indexed by your face instead of the hardware: jaw width in millimetres at every published jaw ratio, and what a printed 8, 20 or 40 mm diameter costs against it.

The best neckline for round face, worked out in millimetres: one tape reading on your cheekbones fixes a forehead width and a jaw width, and those two are what an opening can actually be compared against. Centres, spread and a 1902 drafting rule included.

Necklace length chart worked out in millimetres: the eight lengths chains are cut to, the depth each one hangs below the sides of your neck on four neck measures, and the same drops expressed in your own face length. Chart, geometry and sensitivities included.

Earrings with glasses occupy one vertical band at the top of your ear, and two tape readings settle the whole question: the drop from the arm's line down to your piercing, and how far the ornament rises above it. Both in millimetres and inches.

Hats for face shape are settled by two divisions rather than a style list: how far the crown stands above your own head divided by your cheekbone width, and how wide the brim runs against your forehead. Both worked in millimetres and inches.

How to measure hat size is one distance: the ring a tape makes round the head, over the hair, where a hat band sits. This page sets that ring against the 540 to 620 mm adult band and prices slack, hair and tilt in millimetres and inches.

Diamond vs heart face shape is usually answered with one sentence about the forehead. Here is that sentence with numbers under it: three of this site's five checks print the same value for both rows, the length ratio is 0.05 apart inside a 0.18 tolerance, and one row does not overlap at all.

Round vs square face shape is usually answered with soft curves against straight sides, and no published guide puts a number on that border. Here are the numbers this site publishes: two of the five checks print the same value for both rows, two leave a strip where both labels stay possible, and the one check the rows do not share is the single field the calculator lets you leave blank.

Square vs rectangle face shape is usually answered by calling a rectangle a mix of an oval face and a square face. Read against this site's published length bands that sentence is backwards: the two rows leave a strip 0.24 of the ratio between them, and the rectangle row overlaps the oval row instead. The width half of the sentence is the half that survives.

Oblong vs rectangle face shape is usually answered with adjectives — a corner here, a curve there — and the pages that answer it say the line between the two words is not standardised. This site files both words in one row and publishes that row's bands, so this page turns those printed edges into millimetres and inches, and shows which of them a tape measure can check at home and which one it cannot.

Oval vs heart shaped face is nearly always answered with one sentence about the forehead — wider than the cheekbones means heart, narrower means oval. This site publishes that row as two numbers on two different scales, and only one of them supports that sentence. Here is the row in millimetres and inches, which scale each printed answer came from, and the order to check them in.

Diamond vs oval face shape is usually answered with adjectives — angular, narrow, pointed. This site turns the same border into one number per pair of outlines, for all twenty-one pairs, and prints which of the five checks carries the distance. Here is that table in millimetres and inches, and what a soft tape can and cannot give you.

A round face sits at the bottom edge of the length range this site publishes, so a crown can only add to it. The ten pages ranked for hats for round faces send the crown in opposite directions and none prints a millimetre; here is the same argument as a ladder, in millimetres and inches, at your own cheekbone width.

How long should bangs be? The instruction everyone repeats is a position — level with the eyebrows — and an eyebrow has a height: 7.51 mm on average, 4 to 13 mm across the women measured. So those words ask two people to cut nine millimetres apart. Here is the same landmark as a ladder, in millimetres and inches, counted down from the top edge of your own brow against a forehead you have measured too.

Face framing layers vs curtain bangs is settled before the scissors move, by one number nobody prints: how wide a section of hair is pulled forward. That section is a published ratio of your cheekbone width, 0.80 to 1.05 times across. Here it is in millimetres and inches, one edge at a time, with this page's own cutting range marked as its own and what moving it costs printed next to it.

Male face shapes from four tape readings: all seven length bands at the male cheekbone mean of 142.62 mm (5.61 in), in millimetres and inches.

Eye shapes, monolid and almond eyes among them: five readings in millimetres, inches and degrees, plus what a crease and iris coverage can and cannot tell you.

Lip shapes and the labels behind them: four readings in millimetres and inches, the means three studies report, and what a cupid's bow, a ratio and a photo can and cannot decide.

What a Nubian nose names, why the label is not an anthropometric category, and how nasal width, nasal height and the nasal index describe a broad nose without ranking it.

Straight eyebrows and straight brows, measured two ways: how far the brow rises to its peak and where the tail ends against the inner end. What studies and dated guides actually say, and where the face-shape rule stops.

Frames and face shapes across seven outlines: four of the five frame numbers are adult head and nose ranges, and the one row a label moves spans 7 mm. How to measure the front you own.

The celestial nose label agrees on an upturned tip and splits on the bridge. How to read tip rotation and dorsum shape separately, and what a front photo misses.

Roman nose meaning in side profile: four of nine pages treat it as aquiline, four keep them apart, and one calls the profile straight. The readings behind the label.

Button nose meaning, checked against nine pages: all of them define it by a compact frame and a rounded tip, while upward rotation is a separate reading. The lines to measure.

Aquiline nose meaning in profile: nine pages put a curved or arched bridge first, five also call it Roman, and the hook is not shared. The readings behind the label.

Celebrity look alike finders return a name, not a measurement. What five current pages disclose about faces, galleries and photos, and why the answers move.

An age estimate from a photo is a reading of visible cues, not a bone measurement. What the top estimator pages analyse, how wide published error runs, and why one face gets different numbers.