Sizing is the single biggest driver of clothing and footwear returns online. Industry data from Coresight Research puts the US online apparel return rate at 24.4%, with fit issues cited as the reason for more than half of those returns. Yet most sellers still publish a six-row table with "S / M / L / XL" and a single chest measurement — and wonder why their return rate refuses to budge.
This guide gives you a ready-to-use size chart template that actually reduces returns, explains how to fill every field, and shows what a good chart looks like for apparel, footwear, accessories, and furniture. Copy the template, plug in your measurements, and ship a chart your buyers will actually use.
Why Most Size Charts Fail
A size chart fails when it creates more doubt than it removes. Buyers scroll past vague charts and either bracket multiple sizes (buying 2-3 to return the rest) or click away to a competitor. Coresight's research found that bracketing is now practiced by a majority of online apparel shoppers, which directly translates into processing costs that eat into margin.
Common failure modes:
| Failure | What Buyers See | Result |
|---|---|---|
| Letter sizes only (S/M/L) | "Is your medium the same as the last brand's medium?" | Bracketing or bounce |
| One measurement (chest only) | "What about length? Sleeves? Waist?" | Returns for wrong fit |
| Units in inches only | International buyers can't convert | International cart abandonment |
| No measurement instructions | "Where exactly do I measure my chest?" | Measurement errors, returns |
| Image of a chart (PNG) | Mobile users can't zoom, crawlers can't read it | Lost SEO + bad UX |
| No body type reference | Athletic vs slim vs plus fit unclear | Fit mismatch returns |
Every one of these is fixable with a properly structured chart. The template below covers all six.
The Size Chart Template (Copy This)
Use a markdown or HTML table, not an image. Every value must be text so screen readers, mobile zoom, and search engines can parse it. The following is the base structure — fill in your category-specific measurements.
Base Template Structure
Size | [Measurement 1] | [Measurement 2] | [Measurement 3] | [Measurement 4]
| cm / in | cm / in | cm / in | cm / in
-----|-----------------|-----------------|-----------------|-----------------
XS | | | |
S | | | |
M | | | |
L | | | |
XL | | | |
XXL | | | |
Required elements around the table:
- Title — "Size Chart (Men's T-Shirt)" — include gender and category
- Measurement diagram — visual showing where each dimension is measured on the body or product
- How to measure — 1-2 sentence instructions per measurement
- Unit toggle or dual display — always show cm and inches side by side
- Garment measurement note — state whether measurements are of the body (wear this body measurement) or the garment (laid flat)
- Tolerance note — "Measurements may vary ±1 cm due to manual measurement"
- Model/fit reference — "Model is 180 cm / 72 kg, wearing size M"
- Stretch indicator — for knits and activewear, note fabric stretch percentage
How to Fill Each Field
| Field | Rule | Example |
|---|---|---|
| Size label | Match platform standard (Amazon/eBay/etc.) | M (US 10) |
| Measurements | 3-5 key dimensions, never just one | Chest, Length, Shoulder, Sleeve |
| Units | Both cm and inches, same cell | 96 / 37.8" |
| Increments | Consistent (2 cm typical for adult apparel) | S: 92, M: 96, L: 100 |
| Tolerance | Always disclose | ±1 cm |
| Measurement type | Body OR garment, never mix | "Body measurements" or "Garment laid flat" |
The most overlooked field is the measurement type. A buyer who measures their own chest at 96 cm and sees a garment chart listing "chest: 96 cm" will order size M — and discover the garment has zero ease room. If the chart said "Garment laid flat, chest 96 cm = body chest 90 cm recommended", that return never happens.
Category Templates
Each product category needs different measurements. Here are ready-to-use templates for the most common ones.
Apparel — Men's T-Shirt (Body Measurements)
| Size | Chest (cm / in) | Length (cm / in) | Shoulder (cm / in) | Sleeve (cm / in) |
|---|---|---|---|---|
| S | 90 / 35.4 | 67 / 26.4 | 43 / 16.9 | 19 / 7.5 |
| M | 96 / 37.8 | 69 / 27.2 | 45 / 17.7 | 20 / 7.9 |
| L | 102 / 40.2 | 71 / 28.0 | 47 / 18.5 | 21 / 8.3 |
| XL | 108 / 42.5 | 73 / 28.7 | 49 / 19.3 | 22 / 8.7 |
| XXL | 114 / 44.9 | 75 / 29.5 | 51 / 20.1 | 23 / 9.1 |
How to measure chest: Wrap the tape around the fullest part of your chest, under the arms, keeping it level.
Apparel — Women's Dress (Body Measurements)
| Size | Bust (cm / in) | Waist (cm / in) | Hip (cm / in) | Length (cm / in) |
|---|---|---|---|---|
| XS | 80 / 31.5 | 62 / 24.4 | 86 / 33.9 | 88 / 34.6 |
| S | 84 / 33.1 | 66 / 26.0 | 90 / 35.4 | 89 / 35.0 |
| M | 88 / 34.6 | 70 / 27.6 | 94 / 37.0 | 90 / 35.4 |
| L | 94 / 37.0 | 76 / 29.9 | 100 / 39.4 | 91 / 35.8 |
| XL | 100 / 39.4 | 82 / 32.3 | 106 / 41.7 | 92 / 36.2 |
Footwear — Men's Shoes (International Conversion)
| US | UK | EU | CN/JP (cm) | Foot Length (cm) |
|---|---|---|---|---|
| 7 | 6 | 40 | 25 | 24.5 |
| 8 | 7 | 41 | 26 | 25.5 |
| 9 | 8 | 42 | 27 | 26.0 |
| 10 | 9 | 43 | 27.5 | 26.5 |
| 11 | 10 | 44 | 28 | 27.0 |
| 12 | 11 | 45 | 29 | 27.5 |
How to measure foot length: Stand on a piece of paper with your heel against a wall. Mark the longest toe. Measure from the wall to the mark.
Accessories — Bag
| Size | Length (cm) | Height (cm) | Depth (cm) | Strap Drop (cm) | Capacity |
|---|---|---|---|---|---|
| S | 20 | 14 | 8 | 45 | Phone + wallet |
| M | 28 | 20 | 11 | 50 | A5 notebook + essentials |
| L | 35 | 25 | 14 | 55 | 13" laptop |
| XL | 42 | 30 | 17 | 60 | 15" laptop + books |
Capacity descriptions outperform raw numbers — buyers think in "what fits" not in liters.
Home — Furniture
| Product | Width (cm) | Depth (cm) | Height (cm) | Seat Height (cm) | Weight (kg) |
|---|---|---|---|---|---|
| 2-seat sofa | 160 | 85 | 82 | 45 | 38 |
| 3-seat sofa | 205 | 85 | 82 | 45 | 48 |
| Armchair | 90 | 85 | 82 | 45 | 22 |
For furniture, always add a scale reference line in a secondary image ("fits through a 76 cm doorway") — this is the most requested pre-purchase question.
Customization Tips
Once you have the base chart, layer on these enhancements based on what your category needs:
- Fit type badge — Label variants as "Slim Fit", "Regular Fit", "Oversized" next to the size label. A slim M and a regular M should never appear in the same chart without this badge.
- Size-up guidance — Add a line like "If you prefer a looser fit, size up" or "Runs small — we recommend sizing up one". Be specific about which direction.
- Fabric stretch indicator — For stretchy fabrics: "Fabric stretches: 4-way, up to 20%". No stretch garments should say "No stretch".
- Body type reference — "Best for: athletic build" or "Designed for plus sizes (US 14-24)" removes guesswork.
- Model reference row — Height, weight, and size worn. Add one row per featured model if you show multiple.
- International size block — A short block converting to US/UK/EU/JP sizes, even if your main chart is in one system.
Where to Place the Chart
Chart placement matters almost as much as content. These rules apply across platforms:
- Above the add-to-cart button on mobile — hidden charts don't prevent returns
- Inside listing images (not just the description) — many buyers never scroll to the description
- As one dedicated listing image showing the full chart, readable at thumbnail size
- In text form in the description — so search engines and screen readers can parse it
- Linked from the "Size" selector as a popup — for buyers who are about to commit
Amazon specifically requires standardized size attributes on all US apparel listings (target gender, age range, size class, and size value), with additional fields for specific categories like shirts (neck/sleeve) and pants (waist/inseam). Filling these structured fields correctly also feeds Amazon's size filters — which is where 40-60% of apparel shoppers narrow their search.
What to Annotate Directly on Product Photos
The size chart handles numbers. Your photos need to show scale visually. Tools like annotation editors make it easy to overlay dimension callouts — length, width, and key measurements — directly on the product image. Buyers who skip the chart will still absorb the key dimensions from the image itself. A dimension-annotated hero image plus a text chart in the description is the combination that reduces returns fastest.
For furniture, electronics, and accessories, the annotated photo is often more valuable than the chart. For apparel, the chart is primary and annotated flat-lay shots are secondary.
FAQ
Where should the size chart go on my product page?
The best-performing placement is above the fold on mobile, inside a collapsible section linked from the size selector. Pair this with one dedicated listing image that shows the chart clearly, plus a text version in the description for SEO and accessibility. If buyers have to scroll past reviews to find the chart, it's too far down.
Should I use body measurements or garment measurements?
Either works, but you must clearly label which one you're using and never mix them. Body measurements are easier for buyers ("measure yourself, find your size"), but don't tell them how the garment will fit. Garment measurements (laid flat) are more precise but require buyers to know the ease they want. The safest approach: show both in the same chart with different column headers, or show body measurements and explicitly state the garment ease in a note ("This shirt has 6 cm of ease at the chest").
How do I handle size charts for international buyers?
Always show both cm and inches in every cell. Add a short international conversion block for US/UK/EU/JP sizes. For footwear, include the foot length in cm — this is the only measurement that works universally. Annotation tools and listing editors can help you build a single image that displays multiple regional size systems side by side, which saves you from creating separate listings per region.
My return rate is already low. Do I still need a detailed chart?
Yes, for three reasons. First, a low return rate may mask high bracketing — buyers who keep one size and return the rest still count as one sale but cost you 2-3 return processing fees. Second, better charts increase conversion on first-time buyers who would otherwise bounce. Third, Amazon and other platforms increasingly reward sellers with detailed size attributes in search ranking and filter eligibility.
How often should I update my size chart?
Review every 6 months against actual return data. If "too small" or "too large" comments cluster on a specific size or measurement, update that row. When you launch a new fabric (especially anything with stretch), the chart for that variant needs its own stretch note. Any change to pattern, cut, or fabric should trigger a chart review.