Stop guessing your size online.
Every brand sizes differently, and online you can’t try anything on. Enter your measurements once — SizeSimply matches them to each brand’s official size chart and tells you exactly what to order, with clear guidance when you’re between sizes.
Your measurements
Saved on your device and filled in on every brand page.
Not sure how to measure?
Shopping for
Brands
- Gap Tops · Dresses · Pants +1Find your size Checked 30 Jul 2026
- H&M Tops · Dresses · Pants +1Find your size Checked 4 Aug 2026
- Hollister Tops · Dresses · Pants +1Find your size Checked 3 Aug 2026
- lululemon Tops · Pants · Trousers +3Find your size Checked 28 Jul 2026
- Uniqlo Tops · Pants · Trousers +1Find your size Checked 29 Jul 2026
How it works
- 1 Measure once Enter your bust, waist and hip. It’s saved on your device and filled in on every brand page.
- 2 We read every chart SizeSimply matches your measurements to each brand’s own published size chart — the one they’d have you squint at.
- 3 Order with confidence See your size at each brand, plus a size-up or size-down nudge whenever you land between sizes.