Find Your Foma Bra Size
Measure your underbust and overbust, then use our calculator to find your recommended size.
Measure. Calculate. Find your fit.
Get an accurate measurement
All you need is a soft measuring tape. Keep the tape straight and level around your body.
Measure snugly just below your bust. Keep the tape comfortable, not painfully tight.
Measure around the fullest part of your bust. Keep the tape relaxed without compressing the bust.
Calculate Your Size
Enter both measurements below and we'll calculate your recommended Foma size.
Why do we add 4 inches?
Foma uses the traditional +4 sizing method. Your underbust measurement is used as the starting point, and 4 inches are added to determine the band size.
Bra sizing can vary between brands and styles. If you are shopping with Foma, use this calculator to find the size recommended for our bras.
Frequently Asked Questions
What is the +4 sizing method?
The traditional +4 method adds 4 inches to your underbust measurement to calculate the band size.
Why is my band size higher than my underbust?
This is because Foma uses the traditional +4 sizing method. Four inches are added to the underbust measurement when calculating the band size.
Why can my size be different from another brand?
Different brands may use different sizing systems. This is why the same body measurements can sometimes result in different recommended sizes.
How should a well-fitting bra feel?
The band should feel secure without being painfully tight. The cups should sit smoothly without obvious gaps or spillage, and the straps should feel comfortable without digging into your shoulders.
Shop your Foma fit
Comfortable, breathable cotton bras made for everyday wear.
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