Find your best-fitting bra using Foma’s manufacturing-based sizing. We follow a legacy bra sizing method used in traditional innerwear manufacturing for decades, where band size includes a built-in comfort allowance for everyday wear.
Find Your Bra Size
Measure your underbust and overbust. Your size is calculated using the same legacy method our bras are designed and manufactured with.
- Underbust: Measure snugly under the bust
- Band size: Calculated using a legacy manufacturing method that adds comfort allowance
- Cup size: Overbust − Band size
Calculate My Size
- ✓ Band feels secure, not tight
- ✓ Cups sit smoothly without gaps or spillage
- ✓ Straps feel comfortable on shoulders
Measure Underbust
- Snug but comfortable (do not pull tight)
- Used as the base for legacy manufacturing sizing
Measure Overbust
- Loose measurement
- Do not press the tape
Understand Your Cup Size
Cup size = Overbust − Band size
Underbust: 30″ → Band size: 34 (legacy comfort-allowance method)
Overbust: 37″ → Difference: 3″ → Cup: C
Recommended size: 34C
Foma bras are made using traditional manufacturing techniques. The legacy sizing method adds comfort allowance to suit cotton fabrics, daily wear, and long-term comfort.
Many modern calculators use direct body measurements. Foma follows a legacy manufacturing method that includes comfort allowance, which is why band sizes may appear higher.
