Free tool · UK womenswear
UK size translator — what size are you at each shop?
Enter your measurements and we will show you the size each retailer would send you. Straight answer: the same body can be a 16 in one shop and an 18 in another. Everything here comes from the retailers' own published charts, not from guesswork.
Why this tool exists
- At UK 16, the waist runs from 87 cm at Yours, Dorothy Perkins and Boohoo to 97 cm at Roman Curve — a 10 cm gap, roughly two dress sizes.
- We read five retailers' published size guides directly. No interpolation, no rounding to nice numbers.
- We test every retailer at every size, not just the one you think you are.
Enter your measurements
Measure over underwear, keeping the tape level and snug but not tight. Bust at the fullest point, waist at the narrowest, hips at the fullest.
Not sure what to type? Try a real example: a body measuring 107.5 cm bust, 97 cm waist, 114 cm hips is a UK 16 at Roman Curve — but an 18 at four other shops. That gap is the whole point of this tool.
Your size across five shops
| Retailer | Range | Your size | Their published bust / waist / hip | Fit |
|---|
"Fit" shows how their published measurement compares with yours. A negative number means the garment is cut smaller than you are; positive means there is room.
How the translation works
For each retailer we take their published bust, waist and hip figures for every size they sell, and find the size whose three measurements sit closest to yours. Whichever size wins for that shop is the answer. We do not average shops together, and we never fill a gap with an invented number.
- Read the source. Each retailer's own size guide, captured directly.
- Match on all three. Bust, waist and hips are weighted equally, so a big hip difference cannot be hidden by a close bust.
- Show the gap. You see the published numbers and the difference, so you can judge whether to size up.
Where the charts come from
- Yours Clothing size guide — Curve chart, UK 14–32
- Roman size guide — Curve chart, UK 16–32
- Simply Be size chart — UK 8–32
- Dorothy Perkins size guide — Main range, UK 4–24
- Boohoo size guide — Main range, UK 4–32
Marks & Spencer, Next, ASOS and New Look do not publish their charts in a readable form, so they are not included. We would rather show five verified shops than nine guesses.
Want your fit predicted, not just your size?
Fit Intelligence compares your shape against thousands of real fit reports for each garment.
Find My Fit