Sock WholesalersSock size chart for kids: foot length before the letter
A kids sock carries an S, an M or an L, and that letter means nothing on its own. What decides the cylinder, the stitch count and the cuff is a foot-length band in centimetres, with the age range you sell to sitting on top of it. This page sets out the four columns a kids sock size chart has to state, and how each band — the toddler sock size chart band included — gets built.
In centimetres. The column that sets the cylinder and the stitch count.
Foot length, garment length heel to cuff, cuff diameter relaxed. All three in cm.
Sampling, after the brief and artwork are confirmed.
Minimum per style. The count is pairs per style, not per size.
1. Why the band is written in centimetres, not in shoe sizes
Shoe sizes move between markets and between brands. Foot length in centimetres does not, which is why a chart built on it survives a change of market — and why it is the column that decides the cylinder and the stitch count on the machine.
That is not a preference, it is the order the factory works in. A sock is knitted on a cylinder set for a foot length, then boarded to a size. Start from a shoe size and the factory has to guess twice: once which shoe scale you meant, and once how that brand's scale maps onto a last. Start from centimetres and there is one reading, printed on the sheet, that both sides can point at.
The tolerance is worth knowing before you argue about half a centimetre. Two independent published charts agree within about half a centimetre of these bands, and supplier charts differ by up to about one centimetre overall. Treat the centimetre band as the reference and confirm it against the foot you are fitting — not against the number on the shoe box.
Basis: the size-chart guide on this site, which states that shoe sizes move between markets and brands while foot length in centimetres does not, that foot length sets the cylinder and the stitch count, and the half-centimetre agreement and one-centimetre spread between published charts.
2. What a toddler sock size chart has to state
Four columns, and a kids chart is only usable when all four are filled. The first three are the ones our own size-chart page names as the fields that set the machine; the fourth is the one this floor adds, because a kids sock is bought by an adult who thinks in months.
| Column | What to write | What it sets |
|---|---|---|
| Foot length | Low to high, in cm, as a band | The cylinder and the stitch count |
| Garment length | Heel to cuff, in cm | The knit length |
| Cuff diameter | Relaxed, in cm | Cuff tension and the yarn |
| Age band | The months or years you sell that band to | Nothing on the machine. Everything on the shelf: it is how the sock is chosen and reordered. |
The label is the fourth thing and the least important. Our toddler crew is listed in S/M/L for newborn and infant wear, and the listing says plainly what the letters are: three labels, which tell a buyer nothing about a child. So the band is written as a foot-length range with the age range sitting on top of it, the boundary foot length for each band is sent with the brief, and the mapping goes on the specification sheet before the sample is knitted.
What we do not publish, and will not invent
No fixed S/M/L to centimetre table for toddlers is published on this site, and none is claimed here. The weight per pair, the gauge and the age mapping behind S/M/L are not listed on the style either — they read on request and are confirmed on your quotation.
A page that printed a toddler centimetre table anyway would be more useful-looking and less true. The band has to match the foot your customer is fitting, and that starts with your grid, not ours.
Basis: the four specification fields published on our size-chart page, and the toddler style page, which states that S, M and L are the three labels the listing carries, that a label alone tells a buyer nothing about a child, that the band is written as a foot-length range with the age range on top, and that no fixed S/M/L to centimetre table is published.
3. Building a kids sock size chart, from your own grid outwards
The order that works is the order our style page asks for: send the boundary foot length for each band and the age range it is aimed at, and the mapping goes on the specification sheet before the sample is knitted.
In practice that is four decisions per band, and each one is yours rather than ours:
- Where each band starts and stops. A 1 cm band and a 2 cm band are two different products. The narrower the band, the better the fit and the more sizes on the shelf.
- What the age label says. "0–6 months" and "newborn" are not the same promise, and the label is what a parent reads first.
- How much grow room the band carries. A sock bought for a foot that will grow inside its life is a deliberate choice, and it belongs in the band rather than in the shop assistant's advice.
- Whether the bands share a construction. S, M and L can be one knit boarded three ways or three separate constructions; the second costs more and fits better.
The same three measurements are taken on the sample before it is approved. Foot length and garment length are measured flat; cuff diameter is measured relaxed, because a cuff measured stretched tells you nothing about the leg it will sit on.
Basis: the mapping instruction and the "before the sample is knitted" ordering from our toddler style page, and the relaxed-cuff measurement from our size-chart page field table.
4. On a toddler, the cuff is the engineering
An adult sock has a cuff problem; a toddler sock has a cuff as its main problem. A tight cuff leaves a mark on a leg that cannot say so, and a loose one comes off inside a shoe and is lost by lunchtime.
The rib is therefore sized band by band on the sample, and each band is checked against the grid you sell. Our own statement of the target is short enough to hold in mind: loose enough to leave no mark after an hour of wear, tight enough that the sock stays on. Both properties are checked on the pairs you approve, not on the first pair off the machine.
Which is why a toddler brief without an age or foot-length split cannot be quoted properly. One cuff for the whole range means one of the two failures is designed in.
Basis: the cuff section of our toddler style page, including the "no mark after an hour of wear, stays on" target and the band-by-band rib sizing.
5. Measuring a childs foot so the band means something
The measurement itself takes about ten minutes and no equipment beyond a sheet of paper, a pencil and a rule.
- Stand the child on the paper, weight on both feet. A foot measured sitting reads short.
- Mark the back of the heel and the tip of the longest toe. The longest toe is not always the big one.
- Measure heel to toe in centimetres, and do both feet — most people differ slightly, and the band has to fit the larger one.
- Measure at the end of the day if you can. A foot measured in the morning is not the foot that will wear the sock.
Then write the band, not the measurement. A single number produces a sock that fits for a month; a band with a boundary foot length produces a size that a customer can reorder by name. This is the same reason the chart starts from centimetres in the first place: it has to survive being read by someone who is not holding the foot.
Basis: the measurement method follows from the foot-length rule published on our size-chart page; the paper-and-rule procedure itself is ordinary practice rather than a figure taken from a page.
6. The other decision on a toddler sock: the sole
Most toddler socks are sold for an indoor floor, and the sole is the second specification line after the band. The version we list is a glue anti-slip sole under a 3D cartoon toe, in five colours, in sizes XS to XXL, packed one pair per OPP bag.
Two things about that line are worth reading carefully, because they are the ones that change the price. Cartoon patterns are jacquard work, so the colour count drives both cost and machine time. And the grip is applied after knitting as a separate production step, which means it is a specification line of its own and not a property of the yarn.
Send the artwork, the age bands and the pack size, and the sample comes back in the band you sell most. A floor sock and a bedtime sock are usually the same construction with a different sole, so the band work above is done once and reused.
Basis: the toddler floor sock listing on this site (glue anti-slip sole, 3D cartoon toe, five colours, sizes XS to XXL, one pair per OPP bag) and the jacquard colour-count note on our toddler style page.
7. If the socks are going to the United States
Childrens socks sit inside a compliance frame that adult socks do not, and it is worth knowing before the artwork is drawn rather than after the cartons close. The four items on our own childrens compliance page, each with the source it comes from and the date last checked (2026-10-12):
- Phthalates limited to 0.1% or less for each of the eight listed phthalates, 16 CFR Part 1307.
- Total lead limits under CPSIA section 101, 15 U.S.C. section 1278a.
- A Childrens Product Certificate travels with the goods, CPSIA section 14 and 16 CFR Part 1110.
- Prop 65 wording provided on request, so it can be attached to the shipment that needs it.
Our own practice on the same four items is that the applicable one is confirmed on your quotation rather than assumed from a general page. A grip sole is the item that most often pulls a toddler sock into the phthalate question, so if the sole is part of the brief, say so when you send it.
Basis: our childrens sock compliance page, which lists the four items with their official sources, states that all four were checked on 2026-10-12, and confirms the applicable item on the quotation rather than assuming it.
8. What to send with the brief
Six lines, and the sample can be knitted
- The foot-length band in centimetres for each size you want, low to high.
- The age range you are aiming each band at, in the words that will print on the pack.
- Cuff diameter, relaxed, if you already know what your shelf expects.
- The sole: plain knit, or glue anti-slip, or a grip you have a sample of.
- The colour count and the artwork, if there is a jacquard pattern.
- The pack: one pair per OPP bag, a multi-pack, or a retail header card.
Six answers, one email. The minimum is 1,000 pairs per style, the sample round is 3–5 days after the brief and artwork are confirmed, and bulk runs 20–30 days after the deposit is received and the sample approved.
Basis: the fields named across our size-chart, toddler style and wholesale terms pages; no figure on this card is new.
Which band are you building
Read down the left column until you recognise the range you are trying to fill. The right column says what that decision costs you.
A single size for a gift pack
→ Narrow the band rather than the size count — one metre band, one label
Three sizes across the whole toddler range
→ Boundary foot lengths for each band, and the age label printed on the pack
A range that has to grow with the child
→ Wider bands, and a cuff sized per band rather than once
A floor sock for an indoor creche or a playgroup
→ Glue anti-slip sole, and a pack that survives bulk handling
A reorder of a band that already sells
→ The same boundary foot lengths and the same lot, not a re-derived size
The bands are yours to set; what this floor adds is the requirement that the boundary foot length is written down before the sample is knitted.
Where these figures come from
- Our own sock size chart guide — foot length in centimetres as the fixed point, the three specification fields and what each sets, the half-centimetre agreement between two published charts and the one-centimetre spread between supplier charts, and the relaxed cuff measurement.
- Our own toddler socks style page — the S/M/L listing for newborn and infant wear, the statement that a label alone tells a buyer nothing about a child, the boundary-foot-length mapping, the plain statement that no fixed S/M/L to centimetre table is published, the band-by-band cuff target, and the jacquard colour-count note.
- Our own toddler floor socks listing — glue anti-slip sole, 3D cartoon toe, five colours, sizes XS to XXL, one pair per OPP bag.
- Our own childrens sock compliance page — the four US items with their official sources (16 CFR Part 1307, CPSIA section 101, CPSIA section 14 and 16 CFR Part 1110, Prop 65), all checked 2026-10-12, and the statement that the applicable item is confirmed on the quotation.
- Our own wholesale terms — the 1,000-pair minimum per style, sampling at 3–5 days after brief and artwork, and bulk at 20–30 days after deposit and approved sample.
Send the foot-length bands. The sample follows the band you sell most.
Name the age bands, the boundary foot length for each, the pack size and the artwork. The reply comes back with a reference range, the trade term it sits on and the sample lead time.
Toddler socks run on the same floor as the adult lines, on the machine set for the size band. Nothing on this page is a size table we have not got.