Warner's Bra Size Guide & ConverterCloud-soft fabrics, wireless options, and easygoing coverage for relaxed wear.
Map your soft-wire and comfort-first sizes into Warner's's lounge-friendly silhouettes using our converter, fit notes, and sister-size tips.
Warner's size snapshot
Sizing system
US band/cup sizing with even-numbered bands and double-letter cups (DD, DDD/F, G).
Band range
32–44 with comfort stretch bands
Cup range
A–DDD (some styles to G)
Best for
Warner's focuses on comfort-first fabrics, wireless silhouettes, and light structure for relaxed wear.
- Warner's bands lean stretchy; plan for faster relaxation and consider adding the sister size down for backup.
- Warner's cups balance average projection with rounded silhouettes that suit a wide range of shapes.
- Warner's designs prioritize lift with laminated fabrics, strategic seams, and wider straps for secure support.
Convert your size into Warner's
Pick the brand and size you already wear. We pre-selected Warner's on the right so you can see the equivalent in one click.
Convert to Warner's
Size Guide
Enter your current bra size and select the brands you want to convert between. The converter will help you find your equivalent size in different brands.
Tips for Best Results:
- Enter your size exactly as it appears on your current bra
- Make sure to select both the source and target brands
- Different brands may have slightly different sizing standards
- Always try on bras when possible for the best fit
Fit callouts worth noting
Bands relax quickly with wear
Warner's often uses soft elastics that ease up after a few wears, especially in wireless or lounge styles.
Try this:
Order your regular band and the sister size down so you can choose the secure feel you prefer.
Cups follow average depth
Warner's cups balance coverage and projection, suiting most shapes once the band feels secure.
Try this:
Stick to your known cup, adjusting only if style-specific feedback suggests otherwise.
Support-focused details add stability
Warner's builds in inner slings, side boning, and reinforced straps that change how the bra lifts.
Try this:
Adjust straps slowly and ensure the inner sling sits flush; swap cup size only if tissue is wrinkling or compressing.
Try-on strategy playbook
Dial in your baseline size
- Run the ABTF calculator or your trusted measurement routine first so the converter starts from fresh numbers.
- Keep your most reliable bra size handy; the converter maps it directly into Warner's sizing.
- Note the style you are targeting (plunge, balconette, wireless) so you can sanity-check the fit advice below.
Plan for stretch-friendly bands
- Order your usual band alongside the sister size down to see which feels secure after break-in.
- If you prefer lounge-level comfort, keep the stretchier option for home wear and reserve the firmer one for outings.
- Use easy return windows to compare band tension across at least two sizes before committing.
Leverage built-in support elements
- Position inner slings and side panels smoothly before clasping.
- Adjust straps incrementally; supportive bras respond quickly to small strap changes.
- If boning digs when seated, compare with the sister size up or a softer cut.
Keep exploring
How to Measure Your Bra Size at Home
Step-by-step measuring tips before you add new pieces to your drawer.
Read moreFit Check Wizard
Troubleshoot gaping, spillover, or band riding in minutes with guided diagnostics.
Read moreSister Size Explorer
See every sister size combination when you need extra breathing room or cup depth.
Read moreKeyword prompts people use
Use or monitor these search phrases when you are researching Warner's sizing. They surface comparison guides, calculators, and real shopper feedback.
Refresh your measurements
Accurate numbers keep your converter results honest. Grab a soft tape and follow the pro guide below before you submit that cart.
Professional Bra Measurement Guide
Essential Tools for Accurate Measurement
Required Equipment
- Soft measuring tape (preferably in inches)
- Non-padded bra or no bra
- Full-length mirror
- Notepad for recording measurements
Measurement Preparation
- Stand straight with shoulders relaxed
- Wear a non-padded bra or no bra
- Ensure the measuring tape is parallel to the floor
- Take measurements in a well-lit room
Step-by-Step Measurement Guide
Band Size Measurement
- Measure under your bust, where the bra band sits
- Keep the tape snug but not tight
- Ensure the tape is parallel to the floor
- Round to the nearest even number
Bust Size Measurement
- Measure around the fullest part of your bust
- Keep the tape parallel to the floor
- Don't pull the tape too tight
- Record the measurement in inches
Cup Size Calculation
- Subtract band size from bust measurement
- Use the difference to determine cup size
- Each inch difference represents one cup size
- Example: 1" = A, 2" = B, 3" = C, etc.
Professional Tips for Accurate Results
Common Measurement Mistakes
- Measuring over a padded bra
- Pulling the tape too tight
- Not keeping the tape parallel to the floor
- Measuring at the wrong position
Professional Recommendations
- Take measurements at least twice for accuracy
- Measure at the same time each day
- Consider professional fitting for best results
- Update measurements every 6 months
Frequently asked questions
Does Warner's run true to size?
They skew relaxed. Warner's bands soften quickly, so keep the sister size down handy if you prefer extra hold.
What if I am between band sizes at Warner's?
Include the smaller band so you have a backup once the elastic relaxes after a few wears.
Which Warner's styles work best for comfort-first days?
For comfort-first days, look at Warner's's full-support bras with inner slings, wider straps, and either multi-part cups or posture panels.
Can I convert from other sizing systems into Warner's?
Yes. Warner's follows US sizing, so convert from UK or EU using our tool and remember double letters translate differently across systems.