To use a LitBuy size chart, begin with the chart attached to the exact product and variation you are considering. A size you liked in another garment does not tell you how this one is measured. The important question is whether the dimensions and intended cut suit the way you want to wear it.
Keep three things separate: your body measurements, the measurements of a garment and the size label used by a listing. They are related, but they are not interchangeable numbers. Check which kind of measurement the chart provides before making a comparison.
Choose a suitable reference garment
Use an item you already own that fits in the way you want the new one to fit. A close-fitting top is a poor reference for a roomy outer layer unless you deliberately account for that difference. Look at where the garment feels right or wrong: width, length and sleeves can each affect the result.
Lay the reference garment flat without stretching it. Use a consistent measuring method and note the start and end points. If the listing explains its method, match that method as closely as possible. A measurement across the front of a garment is not the same as a measurement all the way around it.
Do not force a conversion when the chart is ambiguous. Ask whether a number represents a flat width or a circumference before using it to select a size.
Read the units before the numbers
Keep centimetres and inches explicit. One inch is 2.54 centimetres. For an arithmetic example, 20 inches equals 50.8 centimetres; that conversion does not tell you whether the original measurement describes chest width, sleeve length or something else.
Convert only after identifying what was measured. A correctly converted number can still be the wrong comparison if its start point or meaning differs from the other chart.
Avoid rounding so aggressively that you hide a difference important to you. Keep the original value alongside the converted value while comparing, particularly when deciding between two nearby sizes.
Compare more than one dimension
For a top, width alone may not answer whether the length or sleeves work for you. For trousers, the waist information does not describe the rise or leg length. Which dimensions matter depends on the garment and your intended fit.
For example, a hypothetical reference top might measure 54 cm across the relevant width and 68 cm in the stated length. A candidate measuring 58 cm wide but 64 cm long is wider and shorter, not simply a larger version of the same fit. These numbers illustrate a comparison only; they are not a chart for a particular listing.
Decide whether those differences are desirable before looking at the size letter. Do not assume that moving up one label increases every dimension by a fixed amount across products.
Connect the chart to the selected version
A product page may contain several colours, versions or pieces. Check that the size information belongs to the one you intend to order. A chart for one item in a set may not describe the other pieces.
You can inspect the available details for this graphic T-shirt on OG Spreadsheet as a starting point. Confirm what sizing information is actually provided for your chosen option. Do not infer a fabric composition, stretch level or measured fit from a fit label alone.
If a chart is missing or the measurement method is unclear, ask a specific question. “Is the listed chest value measured flat across the garment?” is more useful than “Which size should I buy?” without any context.
When photographs can help
A measurement photograph can help when the tape, garment and endpoints are visible. A distant picture with no readable scale cannot establish a precise dimension. Check that the image concerns the relevant item, not a different purchase with a similar design.
At the warehouse stage, request the dimension that could change your decision. The QC guide explains how to ask for a useful view. A label photograph can confirm the printed label, but it does not replace a measurement of the item.
Use the seller's stated measurement guidance and any disclosed tolerance in context. Do not invent a universal tolerance to excuse a discrepancy. If a difference matters, ask for clarification before deciding to ship.
Accessories also need the measurement method
For a belt, distinguish the listed total length from the adjustment range described for use. If the start point includes a buckle or the end extends beyond the usable holes, a total-length number may not answer your fit question. Ask how the particular listing defines it.
Inspect this slim-belt listing on OG as an accessory example and look for the relevant dimensions. No measured range or material is confirmed here; the useful next step is to establish the measurement method for the selected option.
Shoes need their own comparison
Do not apply a clothing-size shortcut to shoes. Read the chart for the exact footwear and confirm what any centimetre value describes. Foot length, insole length and an external sole measurement are not the same measurement.
If you compare regional size labels, use the relationship given for that product rather than assuming all charts agree. A familiar silhouette or another buyer's usual size does not establish that your chosen pair will fit. Ask for clarification when width or intended use changes the decision.
Keep useful notes without turning them into a universal rule
Save the product identity, selected size and measurements that influenced your choice. When you later receive and try the item, note how the result compares with your expectation. Those observations help with a future comparison but do not establish a platform-wide size standard.
The finds guide helps you keep similar products distinct, while the buying guide places size selection before the later parcel decision. Resolve a known fit problem before allowing a discount or a shipping deadline to make the choice for you.
Should I always size up?
No. Compare the relevant dimensions and desired fit. A blanket rule can produce a wider garment that is still too short, or another unsuitable result.
Can height and weight alone identify the right size?
They do not describe every body proportion, garment cut or fit preference. Use the chart and the measurements that matter for the item.
Does a familiar brand name guarantee a familiar fit?
No. Check the specific product information rather than treating a name as a measurement or an authenticity guarantee.
Related LitBuy reading: spreadsheet links.