Find my size
Size recommenders: how they work, what they can and cannot know, and how Find my size reaches its answer.
- What a size recommender is, and the three kindsA size recommender turns what a shopper knows about their body into one size of your chart. It works from their measurements, from an estimate based on height, weight and age, or from a quiz or a model trained on past orders. Each kind trades the shopper's effort against certainty.5 min
- How Find my size works, step by stepFind my size reads your chart as ranges with no gaps, works out a target for each measurement, scores every size, and shows the best one with how sure it is and why. It runs on the shopper's device and never suggests a size beyond your largest.7 min
- Can you guess a size from height and weight?Roughly, yes. Equations from large body surveys estimate chest, hips and waist from height, weight and age, but two people of the same build can differ by about a clothing size. Show the result as an estimate with the chances of each size, and invite the shopper to measure.6 min
- Size quiz or measurements: which finds the right size?Measurements find the right size more often, when the shopper has a tape and the chart has measurements. A quiz is faster and works without either, at the cost of an estimate. Offer measurements first, and an estimate from height and weight for shoppers who can't measure.5 min
Try Ruban Size on your store.
Free for 5 size charts. Pro and Fit start with a 14-day free trial, billed by Shopify.