Breast Form Size Calculator
Get your form cup size, the bra to wear and the weight to expect. Nothing you enter leaves your device.
How to measure: wrap a soft tape snugly around your ribcage, right under your chest where a bra band sits. For shoulder width, measure straight across your back from one shoulder point to the other.
Breast form cup size
Bra to wear with them
Weight (each form)
- Foam and fabric-filled forms weigh much less and stay cooler, which helps in hot weather or for long days.
Sizes and weights are a rough guide. Check the maker's chart before you buy.
Breast Form Weight Chart
Typical weight of one form with a 36 band. Smaller bands weigh less, larger bands more.
| Cup | Look | Full silicone | Lightweight silicone | Foam / fabric |
|---|---|---|---|---|
| A | Subtle | ~200 g | ~140 g | 20–40 g |
| B | Natural | ~300 g | ~210 g | 30–50 g |
| C | Feminine | ~400 g | ~280 g | 40–70 g |
| D | Full | ~500 g | ~350 g | 50–90 g |
Breast Forms Guide
Types, how to wear them and how to care for them.
Bra Size Calculator
Check your band size in more detail.
This tool gives a general guide. Brands size and weigh their forms differently, so always check the maker's chart.