Made to Order Size Calculator for Custom Apparel
This made to order size calculator captures the full set of measurements bespoke tailors need — bust, waist, hip, shoulder, sleeve, inseam, plus fit preferences — in a Shopify checkout flow. Customers answer once; you get the data into your production system. Built for tailoring brands, custom shirts, and bespoke fashion. Use the calculator below to get your exact fit in 30 seconds.
How it works
Measure yourself
Take your bust, waist, and hips with a soft tape. See the full measurement guide.
Enter the numbers
Type your measurements into the calculator above. Pick inches or cm — the tool converts both ways.
Get your size
Match the result against the brand's chart and order with confidence.
Women's tops & dresses — bust-driven sizing
| Size | US | UK | EU | Bust |
|---|---|---|---|---|
| XS | 0–2 | 4–6 | 32–34 | 31–33" |
| S | 4–6 | 8–10 | 36–38 | 33–35" |
| M | 8–10 | 12–14 | 40–42 | 35–37" |
| L | 12–14 | 16–18 | 44–46 | 38–40" |
| XL | 16–18 | 20–22 | 48–50 | 41–43" |
| XXL | 20–22 | 24–26 | 52–54 | 44–46" |
Frequently Asked Questions
What measurements should an MTO order form capture?
Minimum: bust/chest, waist, hip, height. Standard: add shoulder, sleeve, inseam, neck. Bespoke: add back length, bust apex, sleeve curve, posture notes.
How does this integrate with Shopify orders?
Measurements save as line item properties on the order. Your production system pulls them via Shopify API or CSV export.
Can customers save their measurements for repeat orders?
Yes — the Tailor Size Guide app saves customer measurements to their Shopify customer account. They reuse them on every future order.
What if a customer's measurements are off?
The form includes diagrams for each measurement. Most customer errors come from missing tape placement guidance — diagrams reduce errors by 60%+.
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Run a fashion store on Shopify?
Add this calculator to your product pages. Per-product size charts, instant fit recommendations, and 30%+ reduction in sizing-driven returns.