How to Measure Bra Size at Home Correctly
By Fit Fully Yours Lingerie — Canadian Brand | Bras for Every Body | Published: 2026-10-18
Category: How-to Guides
Learn how to measure bra size at home with a simple step-by-step guide. Get accurate band and cup measurements for a comfortable, supportive fit every time.
Quick answer
To measure bra size at home, you need a soft measuring tape and a mirror. Measure your band size just under your bust, then measure your bust at the fullest part. Subtract the band from the bust to get your cup size. This simple method gives you a reliable starting point for finding bras that fit well.
What you need before you start
A soft, flexible measuring tape is essential. If you don't have one, use a piece of string and a ruler. Wear a non-padded bra or no bra for the most accurate bust measurement. Stand in front of a mirror to keep the tape level and straight around your body.
How to find your band size
Wrap the tape snugly around your ribcage, directly under your bust. The tape should be parallel to the floor and tight enough that it doesn't slide down. Take the measurement in inches. If it's an odd number, round up to the nearest even number — that's your band size.
How to find your cup size
Measure around the fullest part of your bust, keeping the tape loose and level. Subtract your band measurement from this number. Each inch difference equals one cup size: 1 inch = A, 2 inches = B, 3 inches = C, and so on. This gives you your cup letter.
Step-by-step bra measurement guide
- Measure your band: Wrap the tape snugly under your bust, keeping it level. Round to the nearest even number. Common mistake: pulling the tape too tight. It should be snug but not digging in.
- Measure your bust: Wrap the tape around the fullest part of your bust, not too tight. Keep it parallel to the floor. Checkpoint: ensure the tape isn't slipping down at the back — use a mirror to confirm.
- Calculate your cup size: Subtract your band measurement from your bust measurement. Each inch equals one cup letter. Common mistake: using a worn-out or stretched bra for reference. Always rely on the tape measure.
- Try it on and adjust: Use your new size to select a bra. The band should be firm on the loosest hook, and the center gore should lie flat. Checkpoint: if the band rides up or the straps dig in, re-measure or try a sister size.
Bras that work with your measurements
- B1004 Smooth Molded Soft Cup: CHOCOLATE: B1004 Smooth Molded Soft Cup in Chocolate is a bra style offered by FIT FULLY YOURS LINGERIE (CANADA). This item is listed as discontinued and is a final sale. If you find your size in this style, it's a great value at the discounted price, but remember it's final sale — so double-check your measurements before ordering.
- B1012 Maxine Moulded: VIOLET: Maxine features a seamlessly flexible and lightly padded cup, offering full coverage and supportive underwires that sculpt and lift the bust. This style is ideal for larger busts because the underwires and full coverage provide the support that your measurements indicate you need.
- B2498 Carmen: DEEP RED: The Carmen Collection offers an enchanting and playful look with polka dots knit into the mesh fabric, engineered for maximum support with an inside sling in all sizes. Even with a decorative design, this bra doesn't compromise on support — the inside sling helps maintain shape and lift, which is especially important once you know your correct size.
