Will it fit me? Free clothing fit checker
Buying pre-owned online means guessing at fit from a size tag that may not match. Enter a garment's flat-lay measurements (the numbers a good listing shows) and your body measurements, and get an honest fit verdict — too small, slim, true, relaxed, or too big — plus the limiting dimension and a size recommendation. It runs entirely in your browser: no account, nothing sent anywhere, nothing stored beyond this device.
The garment (in, flat)
Your body (in)
How it works
- 1
Pick the garment type
Top, bottom, dress, or outerwear — this sets which measurements matter and the expected ease.
- 2
Enter the measurements
The garment's flat measurements from the listing, and your body measurements. Switch inches/cm anytime.
- 3
Get an honest fit read
A per-dimension and overall verdict with a size recommendation. It's an estimate — cut, fabric, and preference still matter.
Frequently asked
- How do I know if clothes will fit before buying online?
- Compare the garment's flat-lay measurements to your body measurements. A flat chest measurement (pit to pit) doubled is the garment's chest circumference; compared to your chest circumference plus the ease a style needs, you can tell whether it'll be tight, true, or roomy. This free tool does that math per dimension and flags the limiting one — the measurement most likely to make it not fit.
- What are flat-lay measurements?
- Measurements taken with the garment laid flat: pit-to-pit for chest, flat waist, inseam, sleeve, and so on. Good resale listings publish them because they're objective — unlike a size tag, they don't vary by brand. Double the flat circumference measurements (chest, waist, hips) to compare against your body circumference.
- Is the fit checker accurate?
- It's a deterministic estimate from measurements and published ease tolerances — no black box. It can't account for fabric stretch, a garment's specific cut, or personal preference for a tighter or looser fit, so treat it as a strong starting point, not a guarantee. The tool tells you its confidence and which dimension is limiting.
- Do you store my body measurements?
- Not on our servers. The fit check runs entirely in your browser and nothing is sent anywhere. If you want to save your measurements for one-tap checks across items, you can create a free account — then they're stored privately to your account only.
Ready to Grade Smarter?
Join resellers who trust GradeThread to standardize condition grading, build buyer confidence, and sell faster.