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A Chanel ballet flat is published at a 10 mm heel, and the twenty-seven resale pairs measured for this page run from 23.0 cm of insole at a 35.5 to 26.3 cm at a 40, with the outsole half a centimetre longer than the insole where both are printed. Length is only the first figure. The letter after the number, B or C, moves the width by about 9.5 mm, and the upper decides whether the same number relaxes by half a size or not at all.
A Chanel ballet flat is published at a 10 mm heel, and the twenty-seven pairs measured for this page run from 23.0 cm of insole at a 35.5 to 26.3 cm at a 40, with the outsole 0.5 cm longer than the insole where both are printed. Length is only the first figure: the letter after the number, B or C, moves the width by roughly 9.5 mm, and the material decides how much the same number gives.
Ask what the insole measures, not what the label says. Of the twenty-seven listings collected for this page, the ones that publish an insole length read 23.0 cm at a 35.5, 24.0 cm at a 36.5, 24.5 cm at a 37, 25.0 cm at a 38.5, 25.5 cm at a 39, 26.0 cm at a 39.5 and 26.3 cm at a 40. The step from one full size to the next works out at 0.3 to 1.0 cm, so half a size buys 3 to 5 mm of leather — the thickness of two coins stacked. A foot measured at 24.8 cm against a wall therefore lands between the 38.5 and the 39, and the pair whose insole reads 25.5 cm leaves it 7 mm of room behind the heel, before the shoe has spent an afternoon on the foot.
Chanel prints a heel height, not a foot length
Five current ballet-flat pages on chanel.com print the same four fields: material, colourway, reference and heel height. The heel height on every one of them reads 10 mm, or 0.4 in on the US locale. What none of them prints is a foot-length column.
| Reference | Material | Published heel | Locale checked |
|---|---|---|---|
| G02819-X01000-C0204 | Lambskin, beige & black | 10 mm (0.4 in) | US, UK, AU, GR |
| G02819-Y01552-94305 | Lambskin & patent calfskin, black | 10 mm | UK |
| G02819-X01000-U9349 | Lambskin, burgundy & pink, Spring Summer 2026 | 10 mm | UK |
| G26250-X01000-UD162 | Lambskin, red, Fall Winter 2026 pre-collection | 0.4 in | US |
| G26250-X01725-94305 | Aged calfskin, black | 10 mm | UK, FI, KW, HU |
That gap is where the confusion starts. With no column from the house, every chart in circulation is a third party’s, and they do not agree on what a 39 is. Fashionphile’s women’s conversion chart puts a French 39 at a US 8, an Italian/EU 38 and a 25 cm foot. A reseller table puts the same EU 39 at US 8.5 and 25.2 cm. Neither is wrong on its own terms; they are converting different ladders and rounding at different points.
Twenty-seven pairs, one tape: the insole runs 23.0 to 26.3 cm
The measurement that survives the ladder problem is the one taken on the shoe. Twenty-seven listings checked for this page carry at least one measurement; the table below keeps the printed size beside the figure, and leaves a dash where the seller published only one of the two.
| Printed size | Insole (cm) | Outsole (cm) | Sole width (cm) | Heel (cm) | Listing |
|---|---|---|---|---|---|
| 35.5 | 23.0 | — | 7.5 | 1.3 | Quilted beige lambskin, Valois Vintage 1424 |
| 36.5 | 24.0 | — | — | — | Beige and black cap toe, Valois Vintage 5025 |
| 37 | 24.5 | — | — | — | White lambskin, black leather bow, Valois Vintage 8536 |
| 37 | 24.0 | — | 8.0 | 1.3 | Stamped 37C, two-tone lambskin, Joli Closet 3459741 |
| 37 | — | 25.0 | 8.0 | — | Tweed cap toe with bow, The Luxury Closet |
| 37 | — | 26.0 | 7.5 | — | Shimmer suede scrunch bow, The Luxury Closet |
| 38 | 25.0 | — | — | — | White canvas and black patent, Valois Vintage 6951 |
| 38.5 | 25.0 | — | 7.5 | 1.8 | Canvas and leather, Valois Vintage 1411 |
| 39 | 25.5 | 26.0 | 8.5 | 1.5 | Tweed and leather, Corner Luxe 243611 |
| 39.5 | 26.0 | — | — | — | Black patent calfskin, Valois Vintage 13440 |
| 40 | 26.3 | — | 8.8 | 1.0 | Black suede with gold toe, Corner Luxe 274959 |
| 40 | — | 26.5 | 8.5 | 1.5 | Leather and suede, Corner Luxe 273599 |
Two readings in that table are worth pausing on. The first is the 2 cm spread at a printed 37: one pair measures 24.0 cm of insole, another 26.0 cm of outsole. Those are different builds — a cap-toe flat against a scrunch bow — and they are both marked 37. The second is the half-step arithmetic. Between 39 and 39.5 the insole gains 5 mm; between 39 and 40 it gains 8 mm. A wearer choosing between two half sizes is deciding on 5 mm, which is less than the difference between a leather insole and a padded one.
The letter after the number carries the width
The letter is where most listings stop being useful. FASHIONPHILE describes a bare number as the regular width and the C as a medium width that gives extra room without sizing up. A Joli Closet listing for a stamped 37C calls C a standard or comfort width and maps the pair to a US 6.5 to 7. Long-term owners on the PurseForum Chanel shoe thread treat C as the wide fitting and buy 40.5C for wide feet. Three sellers, three readings of one letter.
The measurements cut through it. One PurseForum member put a tape across a US 7.5 and read 3.5 inches for the B and 3.875 inches for the C — 0.375 inch, or 9.5 mm. The pairs in the table above grow about 3 mm of sole width per full size, from 7.5 cm at a 35.5 to 8.8 cm at a 40. So the C letter returns roughly three sizes of width without adding a single millimetre of length, which is exactly why a bare 39 can pinch one wearer across the ball and fit another.
Material sets how much the same number gives
The upper decides whether a tight pair becomes a comfortable one. Lambskin relaxes: FASHIONPHILE’s ballet-flat article puts the figure at up to half a size of stretch with wear, and its designer shoe guide adds that the soft builds are the ones owners describe as moulding to the foot. Quilted lambskin is reported by owners as softer still than the plain build, and one long-term wearer says her quilted pairs stretched noticeably further than the standard ones.
Patent calfskin goes the other way. It is the material most cap toes are made from, and it does not break in. A patent pair that presses on the toes on the first afternoon will still press on the tenth. Grosgrain ribbon, the other common cap-toe material, behaves the same way: it is a woven ribbon with little give, so the front of the shoe stays the shape it arrived in. Canvas and tweed sit between the two, and one published guide puts tweed ballerinas on the larger side of the range.
Aged calfskin is the outlier in the reference list above. Chanel publishes the same 10 mm heel on the aged calfskin pair as on the smooth lambskin pairs, but a grained, aged surface is a firmer upper, so the number that fits in lambskin is not automatically the number that fits in aged calfskin. That is a reason to ask which material a listing is offering before comparing it with a size that worked in another finish.
Two pages from the same retailer say opposite things
FASHIONPHILE publishes two pages about Chanel sizing, and read side by side they contradict each other. The ballet-flat fit article opens by saying the house uses French sizing, so buyers typically go up half a size to a full size from their normal US size. The designer shoe size guide says the opposite in one line: lambskin ballet flats run true but narrow, with the half size recommended only for wider feet, and tweed ballerinas run a little bigger, so a half size down.
The two sentences are reconcilable if you read the second one as the narrower claim. The first is written for a buyer converting from US retail sizes with no measurement in hand; the second separates lambskin from tweed and separates true length from narrow width. When a retailer’s own two pages disagree, the shoe-level figure beats both: an insole length compared against a foot measured against a wall does not depend on which ladder the seller grew up with.
A Chanel 39 sits on the Italian 38 rung
The sizing guides checked here describe Chanel as French-sized, and the same conversion chart lists French 39 against Italian/EU 38 and US 8. The French ladder runs one number above the Italian one, which puts a Chanel 39 on a different rung from an Italian 39 at another house. The Italian-made construction does not change that: the label is the French number.
Wearers cross-check this without naming it. In one Chanel thread a member writes that she takes an EU 39 in the patent cap-toe flat and an EU 38 in the Hermès Oran sandal, which is what the one-rung offset predicts. The same offset explains why so many buyers report sizing up: someone who is a 38 on the Italian ladder is, arithmetically, already a 39 on the French one, and no size-up happened at all. The number on the box is a different scale, not a different foot.
Six figures to ask for before a pair is packed
A listing that says “Chanel flats, 39” has told you one of six things. Ask for the rest.
- The stamp, photographed. It carries the number and the letter, if there is one, and it is the only place the width appears.
- The insole length, measured from the inside of the heel to the tip of the toe. This is the figure to compare with a foot.
- The outsole length. It reads about 0.5 cm longer than the insole, so it is useful for spotting a seller who measured the outside and called it the inside.
- The widest point of the sole, taken across the ball. The pairs above run 7.5 to 8.8 cm, and that band covers the whole size range.
- The heel block height at the back. Chanel publishes 10 mm; tapes at resale read 1.0 to 1.8 cm.
- Your own foot, measured standing at the end of the day with the heel against a wall, both feet, longer one used.
With those six, the choice between two half sizes becomes a comparison of millimetres instead of a guess about a brand’s reputation for running small.
What the four photographs here settle
The photographs on this page are of the bow-vamp family and one cap-toe pair, and they do what a photograph can do for this question. The beige suede pair shows the silver CC bow sitting on the vamp and the rounded toe in front of it, which is a different front from the flat leather cap toe on the classic beige and black pair. The black and burgundy suede pairs show the same bow in other colourways, and the worn white pair shows how much of the toe box sits in front of the ball of the foot once the shoe is on.
What they do not settle is the number. No photograph from outside shows the stamp, the letter or the insole, and a 37 and a 37C look identical from above. That is why the photo request and the measurement request have to travel together: the picture tells you which family the pair belongs to, and the tape tells you which foot it was cut for.
The burgundy pair is the third colourway of the same bow build, and setting it beside the black one shows how little the silhouette changes between colourways: the bow, the rounded toe and the flat sole line stay where they are.
The worn pair is the one to study for fit questions. It shows how far the toe extends past the ball, where the cap sits relative to the toes, and how the vamp closes over the instep — three things that decide whether a half size up will help, since the half size adds length at the toe rather than width across the ball.
Where these figures were read, and when
Every figure above is a reading of a published page or a seller’s tape, checked on 2 November 2026. Where two sources disagree, both numbers are printed rather than averaged.
- chanel.com product page G02819-X01000-C0204, lambskin beige and black: heel height 10 mm (0.4 in on the US locale)
- chanel.com product page G02819-Y01552-94305, lambskin and patent calfskin black: heel height 10 mm
- chanel.com product page G02819-X01000-U9349, lambskin burgundy and pink, Spring Summer 2026: heel height 10 mm
- chanel.com product page G26250-X01000-UD162, lambskin red, Fall Winter 2026 pre-collection: heel height 0.4 in
- chanel.com product page G26250-X01725-94305, aged calfskin black: heel height 10 mm
- FASHIONPHILE, “Chanel Ballet Flats: A Guide to Finding the Right Fit”: French sizing, half to full size up from a US size, lambskin stretching up to half a size, grosgrain and patent cap toes holding their shape, C as a medium width
- FASHIONPHILE, “Designer Shoe Sizes: A Complete Guide to Finding the Right Fit”: women’s conversion chart with French 39 against Italian/EU 38 and 25 cm, lambskin ballet flats true but narrow, tweed ballerinas running a little bigger
- Valois Vintage Paris listings 1424 (35.5, insole 23.0 cm, sole width 7.5 cm, heel 1.3 cm), 5025 (36.5, insole 24.0 cm), 8536 (37, insole 24.5 cm), 6951 (38, insole 25.0 cm), 1411 (38.5, insole 25.0 cm, sole width 7.5 cm, heel 1.8 cm), 13440 (39.5, insole 26.0 cm)
- Corner Luxe listings 243611 (39, insole 25.5 cm, outsole 26.0 cm, sole width 8.5 cm, heel 1.5 cm), 273599 (40, outsole 26.5 cm, sole width 8.5 cm, heel 1.5 cm), 274959 (40, insole 26.3 cm, sole width 8.8 cm, heel 1.0 cm)
- The Luxury Closet listings for a size 37 tweed cap-toe bow flat (outsole 25.0 cm, width 8.0 cm) and a size 37 shimmer suede scrunch bow flat (outsole 26.0 cm, width 7.5 cm)
- Joli Closet listing 3459741, stamped 37C two-tone lambskin: insole 24.0 cm, outsole width 8.0 cm, heel 1.3 cm, C described as a standard or comfort width
- PurseForum Chanel shoe thread: B width 3.5 inches against C width 3.875 inches at a US 7.5, and owners buying 40.5C for wide feet
- 1stDibs listing for a size 37 white lamb leather flat with a black bow: insole 24.5 cm
Browse the shoes catalog or send the six figures on WhatsApp. The Chanel shoe collection page covers the sneaker, heel, slide and boot families side by side, the Chanel sneaker guide works through four published foot-length charts, the Chanel boot guide carries heel, shaft and calf figures from fifteen listings, and the regional shoe conversion guide shows how far the US, EU and UK ladders drift apart at the same foot length.
Questions about Chanel ballet flat sizing
- Do Chanel ballet flats run small?
- Published advice splits, and the split follows the material rather than the brand. Fashionphile's fit article on the ballet flat says French sizing means going up half a size to a full size from a normal US size, and that lambskin can stretch up to half a size with wear. The same retailer's designer shoe guide says lambskin ballet flats run true but narrow, so only wider feet need the half size, while tweed ballerinas run a little bigger and can take a half size down. A patent or grosgrain toe cap barely gives, so a pair that presses on the toes stays pressing whatever the label says.
- What is a Chanel 39 in US sizing?
- On Fashionphile's women's conversion chart a French 39 is a US 8, an Italian/EU 38 and a 25 cm foot; on a reseller table the same EU 39 sits at US 8.5 and 25.2 cm. The French and Italian columns are a whole size apart, which is the part most conversion posts leave out. The stable figure is the centimetre one: the flat marked 39 measured 25.5 cm of insole and 26.0 cm of outsole here, so a foot around 24.5 to 25 cm is the wearer that number was built for.
- What does the C mean on a Chanel flat?
- It marks a wider build, and sellers describe it three different ways: the regular width is the bare number and C adds room (Fashionphile), C is a standard or comfort width (one resale listing on a stamped 37C), and C is the wide fitting for medium-to-wide feet (long-term owners on PurseForum). The measurements settle it. At a US 7.5, one owner measured 3.5 inches across the B and 3.875 inches across the C, a 9.5 mm difference of width with no change in length.
- How long is the insole of a Chanel 39 flat?
- Two size-39 pairs measured here read 25.5 cm of insole and 26.0 cm of outsole, one in tweed and leather, one in patent calfskin. A size 39.5 reads 26.0 cm and a size 40 reads 26.3 cm, so the half step between 39 and 39.5 is about 5 mm, and the full step from 39 to 40 is about 8 mm. Ask for the insole rather than the outsole: the outsole includes the rim of the sole and the heel edge, which is why it reads about half a centimetre longer.
- Are Chanel ballet flats really a 10 mm heel?
- Chanel publishes 10 mm (0.4 in) on the product pages checked here, including the lambskin beige and black cap-toe pair, the lambskin and patent calfskin pair, the aged calfskin pair and the lambskin red pair. Tapes taken at resale read higher: 1.0 cm, 1.3 cm, 1.5 cm and 1.8 cm on four different pairs. A tape at the back of the shoe measures the whole block from the floor, while the published figure is the specification for the heel, so ask which of the two a seller means before treating them as a contradiction.
- Do Chanel flats stretch out?
- Lambskin does, and the published figure is up to half a size, which is 3 to 5 mm of length and a little width. Quilted lambskin is described by owners as softer than the plain build and stretches further. Patent calfskin and grosgrain, which is what most cap toes are made of, hold their shape, so a short patent flat stays short. Tweed and canvas move in the other direction: Fashionphile's shoe guide says tweed ballerinas run bigger and can take a half size down.
- Is a Chanel 37 the same as a 37C?
- In length, yes; in width, no. A stamped 37C on a two-tone lambskin pair measured 24.0 cm of insole and 8.0 cm of outsole width, while a plain 37 in white lambskin measured 24.5 cm of insole. The letter adds roughly 9.5 mm across the ball, so the two numbers describe the same foot length with different room across it. A seller quoting 37 without the letter has not told you which of the two the pair is.
- What should I send a seller before ordering a pair?
- Six figures: the stamp on the insole (number plus any letter), the insole length from the inside of the heel to the tip of the toe, the outsole length, the widest point across the sole, the heel block height, and your own foot length measured standing against a wall at the end of the day. Those six answer the length question directly, and the photo of the stamp settles the width question that no table carries.