Understanding 28A Bra Size
A 28A bra size is considered a small band size with a small cup size. This size is perfect for people with a petite frame and smaller breast volume. Let's explore what makes this size unique and how to find the perfect fit.
Is 28A considered big or small?
Fast facts about 28A
- Snug 28 band with a 1-inch cup jump.
- Standing bust around 28.5–29.5 in keeps the cup filled.
- Use sister sizes—one band step up/down with the opposite cup letter—to adjust tightness.
- Always scoop-and-swoop and check the gore for a flat anchor.
How 28A is measured
Band fit
Aim for a snug 26.5–27.5 in underbust so the 28 band stays level without digging.
Cup depth
Standing bust in the 28.5–29.5 in range keeps roughly a 1-inch cup difference.
Support focus
Choose firm wings, fully adjustable straps, and swap sister sizes if the band shifts during wear.
28A bust size in inches
| Measurement | Typical inches | How to capture it |
|---|---|---|
| Snug band (ribcage) | 26.5–27.5 in | Measure firmly under the bust on an exhale, then round to the band label. |
| Standing bust | 28.5–29.5 in | Keep the tape level across the fullest point while standing tall. |
| Band-to-bust difference | ≈1 in | Subtract your snug band from the standing bust to confirm cup depth. |
| Approx. cup depth | 2.5–3.5 in | Measure from the underwire root to the apex on a well-fitting bra. |
28A bust size in centimeters
| Measurement | Typical cm | How to capture it |
|---|---|---|
| Snug band (ribcage) | 67.3–69.9 cm | Measure firmly beneath the bust, then map it to EU/FR/JP band labels. |
| Standing bust | 72.4–74.9 cm | Keep the tape level across the fullest point without compressing tissue. |
| Band-to-bust difference | ≈2.5 cm | Use the difference to double-check your metric cup depth. |
| Approx. cup depth | 6.4–8.9 cm | Trace from underbust to apex on a supportive bra to check projection. |
- Sits below the most common band range of 32-36, so the cups rest on a petite frame.
- Often reads as modest even on fuller frames because the cup depth is shallow.
- Monitor posture and band tension—small shifts change how the size looks.
Quick reference for 28A
- 28A ≈ band 28 label with a 1-inch cup step.
- Projected bust lands around 28.5–29.5 in.
- Use the calculator to convert this size across US/UK/EU/JP systems.
Ranges are approximations—double-check your own measurements for precision.
28A across popular sizing systems
Match US 28A to the most searched regional labels without leaving this guide.
Currently showing the United States (US) label — copy 28A to match tags instantly.
United States (US)
28A
United Kingdom (UK)
28A
Europe (EU)
60A
France (FR)
75A
Japan (JP)
65A
Australia (AU)
6A
Quick converter
Switch systems and copy the exact label for checkout forms or bra tags.
Need step-by-step help? Jump into the dedicated guides below for measurement nuances and shopping tips.
Perfect For
- Petite frames
- Smaller ribcages
- Smaller breast volume
- Minimal coverage needs
Recommended Styles
T-Shirt Bras
Perfect for everyday wear under fitted clothing
- Seamless
- Molded cups
- Comfortable
Balconette Bras
Great for creating a natural lift and shape
- Wide-set straps
- Lower cut cups
- Enhancing
Plunge Bras
Ideal for low-cut tops and dresses
- Deep V-neck
- Minimal coverage
- Versatile
How 28A tends to look
28A pairs a 28-band with a 1-inch cup jump, so the silhouette changes with your frame and bra style.
- Shift one band size up or down to adjust tightness while keeping cup volume similar.
- Shape, strap placement, and fabric choice all influence whether the size looks subtle or bold.
28A compared with nearby sizes
Quick reference when you’re deciding whether to change the band, the cup, or both.
- 28B adds depth while keeping the band snug if you spill out of 28A.
Fit checks before you buy
When trying on 28A bras, look for these key fit indicators:
- The band should fit snugly around your ribcage
- Cups should fully contain your breasts without spillage
- Straps should stay in place without digging in
- The center gore should lie flat against your chest
- Keep the band parallel to the floor on the middle hook.
- Scoop and swoop tissue into the cups before checking the gore.
- Adjust straps for lift, then reassess comfort after an hour of wear.
Remember that fit can vary between brands and styles. Always try on bras before purchasing to ensure the perfect fit.
Common 28A questions
What size is 28A in other systems?
28A converts to 28A in UK sizes, 60A in EU, 75A in FR, 65A in JP, and 6A in AU.
What does 28A mean?
28A pairs a 28 band with a cup that is roughly 1 inches deeper than the band measurement.
Which sister sizes match 28A?
Shift one band size up or down and adjust the cup letter to keep the same volume.
How can I confirm this is my best fit?
Measure snug and standing bust, check for smooth cup edges, and ensure the band stays level after a few minutes of wear.
Check 28A with our tools
Measure with the calculator, compare sister sizes, and review the perception guide for styling tips.