CHARMKING
CHARMKING Socks, 8 Pairs
Labelled 15-20 mmHg by its maker
Our link opens on L/XL; pick S/M on the listing if that is your size.
Compression socks size chart and size finder
Compression sock sizes come from your calf circumference at its widest point plus your shoe size, and every brand charts them differently: on Comrad's chart a 14 inch calf with a women's 8 shoe is a Medium, while JOBST sizes by ankle and calf only and Sockwell by shoe size only. Enter your numbers below to see your size on all six brands' own charts.
By NurseComforts Editors · Updated October 26, 2026 · Brand charts checked October 26, 2026 · Runs in your browser, nothing is sent anywhere
Your measurements
A 14 in (35.6 cm) calf on each brand's own chart, with a US women's 8 shoe:
- CHARMKINGS/M or L/XLCHARMKING Socks, 8 PairsLabelled 15-20 mmHg
- SockwellM/LSockwell CirculatorLabelled 15-20 mmHg
- Physix GearS/M or L/XLPhysix Gear Sport 20-30Labelled 20-30 mmHg
- ComradMWide-calf size that also fits: M WideComrad: size down for a tighter feel, or up for more comfort, especially if you are new to compression.Comrad Knee-High, 3-PackLabelled 15-20 mmHg
- WellowMWellow Bamboo 18-25 mmHgLabelled 18-25 mmHg
- JOBSTMJOBST Relief 15-20 mmHgLabelled 15-20 mmHg
Where a brand's sizes overlap, every size that fits is shown, because the brand's own chart overlaps. Sizing only: this tool does not suggest a compression level. If a clinician has specified one for you, follow it.
No tape measure? Leave the calf blank and the finder sizes by shoe alone, which is less reliable. How to measure.
Compression socks size chart by calf circumference
Every size each brand's chart allows for a given calf, before shoe size narrows it down. Read across a row and the same calf lands on different sizes, and often on two sizes of one brand, because the brands' own ranges overlap. JOBST prints centimetres; its column converts the inch row (1 in = 2.54 cm). Sockwell is not in this table because it publishes no calf measurement.
| Calf (in) | Calf (cm) | CHARMKING | Physix Gear | Comrad | Wellow | JOBST |
|---|---|---|---|---|---|---|
| 9 | 22.9 | S/M | S/M | – | – | – |
| 10 | 25.4 | S/M | S/M | S | – | – |
| 11 | 27.9 | S/M | S/M | S | – | – |
| 12 | 30.5 | S/M | S/M | S, M, S Wide | S | S, M |
| 13 | 33.0 | S/M | S/M | S, M, S Wide | S, M | S, M, L |
| 14 | 35.6 | S/M, L/XL | S/M, L/XL | S, M, S Wide, M Wide | S, M, L | S, M, L, XL |
| 15 | 38.1 | S/M, L/XL | S/M, L/XL | L, S Wide, M Wide | S, M, L, XL | M, L, XL |
| 16 | 40.6 | L/XL | L/XL | L, M Wide | M, L, XL | M, L, XL |
| 17 | 43.2 | L/XL | L/XL | L, L Wide | M, L, XL, M W | L, XL |
| 18 | 45.7 | L/XL | L/XL, XXL | XL, L Wide | L, XL, M W, L W, XL W | L, XL |
| 19 | 48.3 | L/XL | L/XL, XXL | XL, L Wide | XL, M W, L W, XL W | XL, L Full Calf, XL Full Calf |
| 20 | 50.8 | – | XXL | XL | M W, L W, XL W | L Full Calf, XL Full Calf |
| 21 | 53.3 | – | XXL | – | M W, L W, XL W | L Full Calf, XL Full Calf |
| 22 | 55.9 | – | XXL | – | L W, XL W | L Full Calf, XL Full Calf |
| 23 | 58.4 | – | XXL | – | – | L Full Calf, XL Full Calf |
| 24 | 61.0 | – | XXL | – | – | L Full Calf, XL Full Calf |
– means no size on that brand's chart covers the calf. Sizes with “Wide”, “W” or “Full Calf” in the name are the brand's wide-calf builds.
Each brand's full size chart
Copied row for row from each brand's published chart, in the unit the brand prints, with a converted column beside it. These are the six brands in our ranked compression socks comparison.
CHARMKING
Knee-high compression socks (8-pair pack), from CHARMKING's own chart (sizes CHARMKING Socks, 8 Pairs).
| Size | Calf (in) | Calf (cm) | US women's shoe | US men's shoe |
|---|---|---|---|---|
| S/M | 9-15 | 22.9-38.1 | 5.5-8.5 | 5-9 |
| L/XL | 14-19 | 35.6-48.3 | 8-15.5 | 8-14 |
Wide calf: Two sizes only. The listing labels its L/XL a wide-calf knee-high; the chart gives it a 14-19 inch calf.
Sockwell
Circulator and the rest of Sockwell's compression line, from Sockwell's own chart (sizes Sockwell Circulator). Sockwell: if you are between sizes, size down.
| Size | US women's shoe | US men's shoe | EU shoe |
|---|---|---|---|
| S/M | 4-7.5 | – | 35-38 |
| M/L | 8-11 | 7-10 | 39-43 |
| L/XL | – | 10.5-13 | 44-47 |
| XXL | – | 13.5-16 | 48-50 |
Wide calf: Sockwell sizes by shoe size only and publishes no calf measurement. Its Wide Calf Series keeps the same foot sizing with a roomier leg: about 15-20% wider per its size chart, 30% more room per its collection page.
Physix Gear
Physix Gear Sport knee-high compression socks, from Physix Gear's own chart (sizes Physix Gear Sport 20-30).
| Size | Calf (in) | Calf (cm) | US women's shoe | US men's shoe |
|---|---|---|---|---|
| S/M | 9-15 | 22.9-38.1 | 5.5-8.5 | 5-9 |
| L/XL | 14-19 | 35.6-48.3 | 8-12.5 | 8-14 |
| XXL | 18-24 | 45.7-61 | 10-15 | 11-17 |
Wide calf: No separate wide build. XXL is the largest size, charted to a 24 inch calf.
Comrad
Knee-high Companions (nylon knee-highs), from Comrad's own chart (sizes Comrad Knee-High, 3-Pack). Comrad: size down for a tighter feel, or up for more comfort, especially if you are new to compression.
| Size | Calf (in) | Calf (cm) | US women's shoe | US men's shoe |
|---|---|---|---|---|
| S | 10-14 | 25.4-35.6 | 4-7.5 | 3-5.5 |
| S Widewide | 12-15 | 30.5-38.1 | 4-7.5 | 3-5.5 |
| M | 12-14 | 30.5-35.6 | 8-10.5 | 6-8.5 |
| M Widewide | 14-16 | 35.6-40.6 | 8-10.5 | 6-8.5 |
| L | 15-17 | 38.1-43.2 | 11+ | 9-12 |
| L Widewide | 17-19 | 43.2-48.3 | 11+ | 9-12 |
| XL | 18-20 | 45.7-50.8 | – | 13+ |
Wide calf: Comrad makes wide sizes in many knee-high styles and suggests a wide-calf option if your calf is over 17 inches. Check that the listing you buy offers the wide size.
Wellow
Signature knee-high and Wide Calf knee-high, from Wellow's own chart (sizes Wellow Bamboo 18-25 mmHg).
| Size | Calf (in) | Calf (cm) | US women's shoe | US men's shoe | Sock length |
|---|---|---|---|---|---|
| S | 11.5-15.5 | 29.2-39.4 | 4-6.5 | – | 15 in |
| M | 12.5-17.5 | 31.8-44.5 | 6.5-10 | 5.5-9.5 | 15 in |
| L | 13.5-18.5 | 34.3-47 | 10-12 | 9.5-13 | 15.4 in |
| XL | 15-19 | 38.1-48.3 | 12-15 | 13-16 | 15.8 in |
| M Wwide | 17-21 | 43.2-53.3 | 6.5-10 | 5.5-9.5 | 15 in |
| L Wwide | 18-22 | 45.7-55.9 | 10-12 | 9.5-13 | 15.4 in |
| XL Wwide | 18-22 | 45.7-55.9 | 12-15 | 13-16 | 15.8 in |
Wide calf: Wellow sells a separate Wide Calf knee-high (M W, L W, XL W) charted to a 22 inch calf. The listing we link is the regular-calf build.
JOBST
JOBST Relief knee-high, from JOBST's own chart (sizes JOBST Relief 15-20 mmHg).
| Size | Calf (cm) | Calf (in) | Ankle (cm) | Ankle (in) |
|---|---|---|---|---|
| S | 28-38 | 11-15 | 18-21 | 7.1-8.3 |
| M | 30-42 | 11.8-16.5 | 21-25 | 8.3-9.8 |
| L | 32-46 | 12.6-18.1 | 25-29 | 9.8-11.4 |
| XL | 34-50 | 13.4-19.7 | 29-33 | 11.4-13 |
| L Full Calfwide | 46-61 | 18.1-24 | 25-30 | 9.8-11.8 |
| XL Full Calfwide | 46-61 | 18.1-24 | 30-36 | 11.8-14.2 |
Wide calf: JOBST makes Relief in Large Full Calf and XL Full Calf (46-61 cm calf) and in a petite length for a knee-high length of 38 cm or less.
Wide calf and plus size compression socks
- Comrad makes S, M and L Wide in many knee-high styles (12-19 in calf) and suggests a wide-calf option once your calf is over 17 inches.
- Wellow sells a separate Wide Calf knee-high: M W 17-21 in, L W and XL W 18-22 in, on the same shoe sizes as its regular chart (Wellow's size page).
- JOBST makes Relief in Large Full Calf and XL Full Calf for a 46-61 cm (about 18-24 in) calf, plus a petite length (JOBST Relief).
- Physix Gear has no separate wide build; its XXL is charted to a 24 inch calf.
- Sockwell's Wide Calf Series keeps the same foot sizing with a roomier leg. Its size chart says about 15-20% wider than regular; its collection page says 30% more room. The two pages disagree and neither gives a calf measurement.
- CHARMKING has two sizes; its listing labels the L/XL wide calf, charted at 14-19 in.
The listing we link for a brand is not always its wide build: our Wellow pick is the regular-calf version. Where a link opens on one size or build, its card below says so.
How to measure for compression socks
- Measure early in the day if you can. JOBST says swelling often increases later in the day.
- Sit with your legs at a 90 degree angle and have someone wrap a soft tape around the widest part of your calf (Wellow's steps).
- For JOBST, also measure your ankle at its smallest circumference. JOBST measures each leg separately.
- Note your US shoe size, then enter all of it in the finder above.
Shoe size predicts calf size poorly, which is why most of these brands chart both. Our compression socks guide covers fit failures in more depth. Shopping for shoes as well? The shoe size converter lines your US size up against HOKA, Brooks, Skechers, Dansko and Crocs.
How this size finder works
- For each brand it keeps every size whose printed range includes every measurement you gave that the brand charts. Ranges are inclusive, so a value on a boundary fits both sizes, as it does on the brand's chart.
- If no single size fits everything, it shows which size your calf, ankle and shoe each point to, and the brand's own between-sizes advice where it publishes one. It does not pick for you.
- Inches and centimetres convert at 2.54. Brands that print inches are compared in inches; JOBST is compared in centimetres.
- Every number is copied from the charts listed under Sources, all read on October 26, 2026. Brands revise charts; if one disagrees with a brand's current page, the brand's page wins.
This is a sizing tool only. It does not suggest a compression level, and the mmHg figures on this page are each product's label as its maker states it. If a clinician has specified a level for you, follow their guidance. We do not wear-test socks; this page reports what each brand publishes.
Compression socks sized on these charts
The six picks from our ranked compression socks comparison, one per chart above. Choose your size on the listing; some listings open on one size or colour.
Sockwell
Sockwell Circulator
Labelled 15-20 mmHg by its maker
Our main link is the women's S/M listing; men's sizes are a separate link on the card.
Physix Gear Sport
Physix Gear Sport 20-30
Labelled 20-30 mmHg by its maker
Our link opens on L/XL in grey; other sizes are on the listing.
Comrad
Comrad Knee-High, 3-Pack
Labelled 15-20 mmHg by its maker
Wellow
Wellow Bamboo 18-25 mmHg
Labelled 18-25 mmHg by its maker
Our link is the regular-calf build in size M, not the Wide Calf knee-high.
Rated 4.2 stars from 146 ratings on the retailer listing when we last read it on August 27, 2026, under the 4.3-star floor; it stays because it is the only 18-25 mmHg sock we list.
JOBST
JOBST Relief 15-20 mmHg
Labelled 15-20 mmHg by its maker
Our link opens on Medium; other sizes are on the listing.
If a clinician has specified a compression level for you, follow their guidance; JOBST sizes by ankle and calf circumference.
Compression sock sizing FAQ
How do I know what size compression socks to get?
Measure your calf at its widest point, then read it against the brand's own chart together with your shoe size. Sizes do not carry across brands: a 14 inch calf with a women's 8 shoe is a Medium on Comrad's and Wellow's charts but could be S/M or L/XL on CHARMKING's and Physix Gear's, where those two sizes overlap.
Where do you measure your calf and ankle for compression socks?
Comrad and Wellow measure the calf around its widest part; Wellow has you sit with your legs at a 90 degree angle while a helper measures. JOBST measures the ankle at its smallest circumference and the calf at its largest, each leg separately, and says to measure early in the morning when possible.
What if my calf and shoe size point to different sizes?
Follow the brand's own rule where it publishes one. Comrad says to size down for a tighter feel or up for more comfort, especially if you are new to compression, and Sockwell says to size down when you are between sizes. CHARMKING, Physix Gear, Wellow and JOBST publish no between-sizes rule on the charts we read.
Do compression socks come in wide calf or plus sizes?
Several of these brands make them. Comrad's S, M and L Wide run to a 19 inch calf, Wellow's wide-calf sizes to 22 inches, and JOBST Relief's Full Calf sizes to 61 cm (about 24 inches). Physix Gear's XXL is charted to a 24 inch calf, and Sockwell's Wide Calf Series adds leg room without a published calf measurement.
Are compression socks sized by shoe size?
Some are. Sockwell sizes by shoe size only. JOBST sizes Relief by ankle and calf circumference only. Comrad, CHARMKING, Physix Gear and Wellow chart both shoe size and calf circumference.
Sources
- CHARMKING's size-chart image on its 8-pair knee-high listing — CHARMKING publishes no size page of its own; its chart is an image on the product listing our buy button opens. US women's and men's shoe size and calf size for S/M and L/XL.
- Sockwell compression sock size chart — Shoe-size bands (women's, men's, EU) for S/M to XXL, the size-down-if-between advice, and the Wide Calf fit described as about 15-20% wider than regular.
- Sockwell Women's Circulator product page (size guide) — The women's (S/M, M/L) and men's (M/L, L/XL, XXL) shoe-size guides for the Circulator.
- Sockwell Wide Calf Series collection page — Describes the Wide Calf Series as having 30% more room in the leg (the size chart page says about 15-20% wider).
- Physix Gear compression socks product page (size chart image) — US women's and men's shoe size and calf size (inches) for S/M, L/XL and XXL, plus UK and EU tables with calf in centimetres.
- Comrad Knee-High Compression Socks product page (size guide) — Calf circumference and US shoe size for S, M, L, XL and the S, M and L Wide sizes of the knee-high line, the between-sizes advice and the over-17-inch wide-calf advice.
- Wellow: What's My Size — Regular (S-XL) and wide-calf (M W, L W, XL W) charts with shoe size, calf circumference and sock length, and Wellow's seated measuring steps.
- JOBST phlebology catalogue (Essity), sizing charts — The ready-to-wear sizing chart that covers JOBST Relief: ankle and calf in centimetres for S, M, L, XL, Large Full Calf and XL Full Calf, and the knee-high petite length.
- JOBST compression product folder (Essity, 11/2024), measuring for medical legwear — Where to measure (ankle at its smallest circumference, calf at its largest), each leg separately and early in the morning, and the same S-XL Full Calf ankle and calf ranges.
- JOBST Relief product page (US) — The Relief size list (S, M, L, L Full calf, XL, XL Full calf), the petite length option and the open and closed toe styles.
Last checked: October 26, 2026.