Blouses are often made in woven fabric with little stretch, so a size error shows up fast: pulling across the bust, gaping buttons, sleeves that ride up. The bust is the measurement that decides, and the waist and hips matter for fitted styles. This calculator reads your bust and waist and returns the blouse size from Nike’s women’s tops chart, together with the numeric sizes for the US, UK and Europe.
How to use the blouse size calculator
- Measure your bust around the fullest point, tape horizontal.
- Measure your waist at the narrowest part of the torso.
- Choose your height band: tall tops exist for 5 ft 8 in to 6 ft.
- Read the size. The size by bust is the recommendation; the size by waist is shown for comparison.
Blouse size formula (chart lookup)
bust and waist differ → follow the bust (Nike)
borderline → smaller for a tighter fit, larger for a looser fit
The chart is Nike’s women’s tops chart with its international size conversion (retrieved 2026-10-15). It lists body measurements in inches. For bust above 48.5 in or waist above 42.5 in the calculator uses the plus range, 0X to 4X.
| Size | Bust (in) | Waist (in) | Hip (in) | US | UK | EU | FR |
|---|---|---|---|---|---|---|---|
| XXS | 27.5 – 29.5 | 21.25 – 23.5 | 30.5 – 33 | 0 | 2 | 30 | 32 |
| XS | 29.5 – 32.5 | 23.5 – 26 | 33 – 35.5 | 0–2 | 4–6 | 32–34 | 34–36 |
| S | 32.5 – 35.5 | 26 – 29 | 35.5 – 38.5 | 4–6 | 8–10 | 36–38 | 38–40 |
| M | 35.5 – 38 | 29 – 31.5 | 38.5 – 41 | 8–10 | 12–14 | 40–42 | 42–44 |
| L | 38 – 41 | 31.5 – 34.5 | 41 – 44 | 12–14 | 16–18 | 44–46 | 46–48 |
| XL | 41 – 44.5 | 34.5 – 38.5 | 44 – 47 | 16–18 | 20–22 | 48–50 | 50–52 |
| XXL | 44.5 – 48.5 | 38.5 – 42.5 | 47 – 50 | 20–22 | 24–26 | 52–54 | 54–56 |
| 0X | 44 – 47 | 40 – 43 | 48 – 51 | 16W | 22 | 50 | 52 |
| 1X | 47 – 49.5 | 43 – 45.5 | 51 – 54 | 18W–20W | 24–26 | 52–54 | 54–56 |
| 2X | 49.5 – 52 | 45.5 – 49 | 54 – 57 | 22W–24W | 28–30 | 56–58 | 58–60 |
| 3X | 52 – 55 | 49 – 53 | 57 – 61 | 26W–28W | 32–34 | 60–62 | 60–62 |
| 4X | 55 – 58 | 53 – 57 | 61 – 65 | 30W–32W | 36–38 | 64–68 | 66–68 |
Worked example
Bust 36.5 in, waist 30 in, regular height.
- Bust 36.5 is above S (35.5) and within M (35.5–38): size M.
- Waist 30 is within M (29–31.5): size by waist M.
- Numbers: US 8–10, UK 12–14, EU 40–42, France 42–44.
Choosing a blouse
- Bust darts and buttons: if buttons gape, go up a size and take in the waist.
- Sleeve length: check the garment measurement; tall sizes lengthen the sleeve proportionately.
- Fabric: silk and cotton blends hold shape, while stretch blends allow a smaller size.
- Layering: allow room for a camisole or bra with extra seams.
To convert between countries use the Letter Size to Number Converter (S/M/L) and Clothing Size Converter (International); for dresses see the Dress Size Calculator. This page is general information.
Sources
Every figure above comes from these pages, read directly on the dates shown. Brand names are used only to identify published charts.
- Nike — women’s tops size chart (bust, waist, hip; international conversions; tall tops) — checked 2026-10-15
- Nike — women’s numeric size chart (cross-check) — checked 2026-10-15
Frequently asked questions
How do I find my blouse size?
Measure the fullest part of your bust with the tape horizontal, and your natural waist. Nike’s tops chart says to order the size indicated by your bust if bust and waist point to different sizes, which is what the calculator uses.
What are the numbers that match S, M and L?
On Nike’s chart a small is US 4–6, UK 8–10, EU 36–38; a medium is US 8–10, UK 12–14, EU 40–42; a large is US 12–14, UK 16–18, EU 44–46. Plus sizes 0X–4X match US 16W–32W.
What if my bust and waist suggest different sizes?
Go by the bust, and have the body of the blouse taken in if needed. The calculator shows the size by waist to make it clear when they differ.
Do blouses come in tall sizes?
For select styles, yes. Nike’s tall tops, for heights of 5 ft 8 in to 6 ft (173–183 cm), are 1.75 in (4.5 cm) longer than regular tops, with sleeve length adjusted.
How is a blouse different from a T-shirt?
Blouses are usually cut closer and of woven fabric with less stretch, so you may prefer to size up if between sizes. Compare the T-Shirt Size Calculator and Letter Size to Number Converter (S/M/L) for details.