1. What is the UK Bra Size Calculation?

The UK bra size system uses underband measurement in centimeters and the difference between overbust and underband measurements to determine cup size. This provides a standardized way to find the correct bra size for optimal fit and comfort.

2. How Does the Calculator Work?

The calculator uses the UK bra size formula:

Where:

• Underband — Measured tightly around the ribcage just below the bust (in cm)
• Overbust Difference — Difference between bust measurement (at fullest part) and underband measurement (in cm)

Explanation: The underband measurement determines the band size (rounded to nearest whole number), while the overbust difference determines the cup letter.

3. Importance of Accurate Bra Sizing

Details: Wearing the correct bra size improves comfort, posture, and breast support. An ill-fitting bra can cause back pain, shoulder grooves, and poor breast shape.

4. Using the Calculator

Tips: Measure underband snugly without breathing in. Measure overbust loosely at fullest part while wearing a non-padded bra. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: How often should I measure my bra size?
A: Every 6-12 months or after significant weight changes, pregnancy, or breast surgery.

Q2: Why does my size vary between brands?
A: Different brands may have slightly different sizing standards. Always check each brand's size guide.

Q3: What if my measurement is between band sizes?
A: If your underband is an odd number, try both the size below and above to see which fits better.

Q4: How tight should the underband be?
A: It should be snug but comfortable, parallel to the ground, and you should be able to fit two fingers underneath.

Q5: What if my cup size is larger than K?
A: Some UK brands offer larger cup sizes (L, LL, etc.). Look for specialty bra retailers that cater to larger cup sizes.