Dress Size Calculator

Adjust the calculator values below

Suggested UK reference size UK 10
International equivalents US 6 / EU 38 / AU 10
Bust-based size UK 10
Waist-based size UK 10
Hip-based size UK 10
Governing measurement Bust, waist, and hips
Measurements used Bust 88 cm / waist 70 cm / hips 93.5 cm
Reference chart scope ASOS standard/Curve body measurements, UK 4-30
UK 10 reference size
ASOS own-brand chart estimate The smallest reference size that accommodates bust, waist, and hips
Other Calculator

Dress Size Calculator

Use this dress size with measurement unit, bust circumference, and natural waist circumference to get fast results, understand the formula behind the...

This is a reference-chart estimate, not a universal size

Dress sizing varies by brand, country, garment cut, fabric, and intended ease. This calculator uses published ASOS own-brand body measurements for UK 4-30 and selects the smallest chart size that accommodates all three entered circumferences. Always check the size chart on the actual product page before ordering.

How to take the three measurements

Measure the bust around its fullest part, the waist around the natural waistline, and the low hips around the fullest lower-hip area. Keep the tape level and comfortably close to the body without compressing it. Use the same unit for all three measurements.

What to do between sizes

The estimate rounds up to the first chart row that accommodates every measurement, so the largest size requirement governs. A fitted, structured, non-stretch garment may need more room, while a relaxed or stretchy style may fit differently. Review garment-specific fit notes, fabric stretch, length, and returns guidance.

Frequently asked questions

Common questions about body measurements, brand-specific charts, international size equivalents, and fitting between sizes.

Is this a universal dress size?

No. The result is an ASOS own-brand reference-chart estimate. Brands, countries, collections, garment cuts, and fabrics vary, so check the actual product's current chart before ordering.

Why does the calculator use bust, waist, and hips?

A dress can be constrained at any of those areas. The calculator finds the chart size required by each measurement and recommends the largest of the three so every entered circumference fits within that reference row.

How should I measure my bust?

Measure around the fullest part of the bust with the tape level and comfortably close to the body. Wear the undergarments you expect to use with the dress when practical.

Where should I measure waist and hips?

Measure the waist around the natural waistline. Measure the low hips around the fullest lower-hip area; the ASOS guide describes this as about 20 cm below the natural waistline.

What if my measurements fall into different sizes?

The largest size requirement governs this estimate. Then check the garment's shape, stretch, intended ease, and fit notes; separates, tailoring, or a different cut may fit better when proportions span sizes.

What if the result is above UK 30?

One or more measurements exceed this calculator's reference table. Use a retailer or brand chart covering the required range rather than extrapolating the listed sizes.