Enter a body measurement and the ease you want, and read the finished garment measurement instantly — or flip the mode to work back from a garment spec to the body it fits. The ease-to-fit guide (slim, regular, relaxed, oversized) is indicative for adult knitwear only: knit stretch, style and point of measure all shift how much ease actually wears, so confirm it against a fit sample.
⚠️ Exact maths, indicative fit guide. The arithmetic is exact — finished garment is simply body plus ease (and body is garment minus ease). The fit character label (slim / regular / relaxed / oversized) is only an indicative planning guide for adult knitwear on a full chest / body circumference. Real perceived fit also depends on the knit's stretch, the garment style and which point of measure you are easing — a stretchy rib wears far tighter for the same ease number than a stable cotton knit. Use it to draft a first spec, then confirm against a fit sample before bulk. Keep the measurement and the ease in the same unit.
Every finished garment is bigger (or, with negative ease, smaller) than the body it is made for. That gap is the wearing ease — the room you design into the piece so it moves, drapes and reads the way you want. Body measurements are taken on the person or fit form; garment measurements are taken flat on the finished piece; ease is what connects them. Because tech packs are written in finished (garment, flat) measurements, you almost always need to add ease to a body measurement to reach a production spec — and this tool does it in both directions.
No estimation and nothing hidden — it is one line of arithmetic, run whichever way you need:
finished garment = body + ease body = finished garment − ease ease = finished garment − body Worked example, matching the default: a 96 cm body chest with 10 cm of ease gives a 106 cm finished garment chest — a classic / regular fit. Flip the mode and a 106 cm garment minus 10 cm of ease returns the 96 cm body it is cut to fit. Change the unit and the same maths runs in inches; the fit guide below always reads the ease in centimetres so the bands stay consistent.
Indicative chest / body ease bands for a regular adult knit — planning starting points, not a standard. Confirm every number against your fit sample:
| Ease (cm) | Fit character | Notes |
|---|---|---|
| below 0 | Body-con / stretch fit | garment smaller than body — relies on knit stretch |
| 0 – 5 cm | Slim fit | close to the body, minimal room |
| 6 – 10 cm | Classic / regular fit | the everyday knitwear default |
| 11 – 15 cm | Relaxed fit | roomy, easy layering |
| over 15 cm | Oversized | deliberately voluminous silhouette |
Building the full spec? Turn your fitted base into a graded set with the size grading calculator, cross-check labels against the sweater size converter, and drop the finished measurements into our free tech pack template. See every tool on the free tools page, or start with the knitwear manufacturer overview.
Wearing ease is the difference between your body measurement and the finished garment measurement — the room built into the garment so it moves, drapes and fits the way you intend. Finished garment = body + ease. A chest ease of 10 cm on a 96 cm body gives a 106 cm finished chest. Positive ease adds room, zero ease sits skin-close, and negative ease means the garment is smaller than the body and relies on the knit stretching to fit.
As an indicative guide for adult knitwear, chest ease around 0–5 cm reads as a slim fit, 6–10 cm as a classic or regular fit, 11–15 cm as relaxed, and over 15 cm as oversized; negative ease is a body-con or stretch fit that depends on the knit. These bands are planning starting points, not a standard — a heavy stretchy rib needs far less ease than a stable cotton knit for the same look, so always confirm the number against a fit sample.
A body measurement is taken on the person (or the fit model / dress form); a garment measurement is taken flat on the finished piece. They are not the same number — the garment measurement equals the body measurement plus the wearing ease you designed in. Tech packs are specified in garment (finished, flat) measurements, so if you only have body measurements you add ease to reach the spec, and this tool does that both ways.
Yes — the ease guidance assumes a moderately stable knit. A stretchy rib or an elastane blend can wear well with little or even negative ease, while a firm, low-stretch cotton or a fully-fashioned WHOLEGARMENT piece needs its full designed ease to sit right. That is why we read every graded, eased spec against a sampling swatch before bulk at Kiwi Giyim, where the 250-piece minimum is per colour and per size — each size is its own machine programme, so set your size range before bulk.