Bra Size Chart, UK
How to Determine your Bra Size?
1. Under Bust Measurement: Measure circumference around your body just under your bust/breasts. Make sure the measuring tape is parallel with the ground. Round measurement down to nearest whole number, and determine your band size from the Band Size Chart below.
2. Over Bust Measurement (Bust Size): Wear a non-padded bra (or no bra) while measuring. Stand with your arms at your side (ask a friend for measuring help if possible). Measure all around your body (under arms) at the fullest part of your bust . Make sure the measuring tape is parallel with the ground, and not binding. Under Bust Measurement is used (combined with over bust measurement) to determine cup size. See cup size chart and instructions below.
Bra Band Size Chart, UK:
| Under Bust Inches |
Under Bust CM |
Bra Band Size |
| . | . | |
| 23" | 58-60.5 cm | 28 |
| 24" | 60.5-63 cm | 28 |
| 25" | 63-65.5 cm | 30 |
| 26" | 65.5-68 cm | 30 |
| 27" | 68-71 cm | 32 |
| 28" | 71-73 cm | 32 |
| 29" | 73-76 cm | 34 |
| 30" | 76-78.5 cm | 34 |
| 31" | 78.5-81 cm | 36 |
| 32" | 81-83.5 cm | 36 |
| 33" | 83.5-86 cm | 38 |
| 34" | 86-89 cm | 38 |
| 35" | 89-91.5 cm | 40 |
| 36" | 91.5-94 cm | 40 |
| 37" | 94-96.5 cm | 42 |
| 38" | 96.5-99 cm | 42 |
| 39" | 99-101.5 cm | 44 |
| 40" | 101.5-104 cm | 44 |
| 41" | 104-106.5 cm | 46 |
| 42" | 106.5-109 cm | 46 |
Cup Size Chart:
Use both Over bust measurement and Determined Band Size (determined above) to find your Cup Size. Calculate the difference between your Bust Measurement and Band Size like this:
Cup Size = Over bust measurement (inches)- Band Size (determined above)
Subtract your Band size (determined by using band size chart below) from your measured bust size (measurement over bust in inches). Use the number you get to determine cup size from Cup Size Chart below:
| Over Bust - Band Size |
BRa Cup Size |
| . | |
| < 1" | AA |
| 1" | A |
| 2" | B |
| 3" | C |
| 4" | D |
| 5" | DD |
| 6" | E |
| 7" | F |