Elomi Bra Size Calculator

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Expert Elomi Bra Size Calculator | Find Your Perfect Fit


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Elomi Bra Size Calculator

Welcome to the most accurate Elomi Bra Size Calculator designed for the modern woman. Elomi uses UK sizing, which can differ from other brands. This tool helps you find your precise starting size for their full-bust lingerie and swimwear. Get your results instantly and read our expert guide below.



Measure snugly around your ribcage, directly under your bust.
Please enter a valid, positive number.


Measure around the fullest part of your bust, keeping the tape level.
Please enter a valid, positive number.

What is an Elomi Bra Size Calculator?

An Elomi bra size calculator is a specialized tool designed to determine your correct bra size specifically for the Elomi brand. Unlike generic calculators, an Elomi bra size calculator is tailored to the unique sizing system used by Elomi, a leading brand for full-busted and full-figure women. Elomi uses the UK sizing standard, which often features double letters (like FF, GG, HH) for larger cup volumes and does not typically use the outdated “add 4 inches” method for band measurement. This makes a dedicated Elomi bra size calculator essential for getting an accurate starting point before you shop.

This tool should be used by anyone considering purchasing an Elomi bra, especially those new to the brand or who haven’t been measured in over six months. A common misconception is that all bra brands fit the same. However, sizing can vary significantly, and an Elomi bra size calculator helps bridge that gap by providing a size based on their specific fitting philosophy. It ensures you account for the brand’s focus on support from the band, which is why accurate underbust measurement is so critical.

Elomi Bra Size Calculator Formula and Mathematical Explanation

The logic behind our Elomi bra size calculator is based on modern UK fitting standards that prioritize a snug, supportive band. The process involves two simple measurements and two main calculation steps.

  1. Band Size Calculation: The band size is determined by your underbust measurement. Measure snugly around your ribcage in inches. Some traditional methods add 4 or 5 inches, but for modern supportive brands like Elomi, this is incorrect. Our Elomi bra size calculator uses the direct measurement: round your underbust measurement to the nearest even number. For example, a 37.5-inch underbust becomes a 38 band.
  2. Cup Size Calculation: The cup size is found by subtracting the calculated band size from your full bust measurement. Each inch of difference corresponds to a letter in the UK cup size progression.

The formula is: Cup Difference = Bust Measurement – Band Size.

Variables Table

Variable Meaning Unit Typical Range
Underbust Measurement The measurement around the ribcage just beneath the bust. Inches 28 – 50
Bust Measurement The measurement around the fullest part of the bust. Inches 32 – 65
Band Size The numerical part of the bra size, based on the underbust. Inches 30 – 52 (Even Numbers)
Cup Difference The difference in inches between the bust and band size. Inches 2 – 18

Practical Examples (Real-World Use Cases)

Example 1: Finding a Starting Size

Sarah wants to buy her first Elomi bra online. She uses the Elomi bra size calculator for guidance.

  • Input – Underbust: 39 inches
  • Input – Bust: 47 inches

Calculation Process:

  1. The calculator rounds the 39-inch underbust up to the nearest even number, resulting in a Band Size of 40.
  2. It then subtracts the band size from the bust measurement: 47″ (Bust) – 40″ (Band) = 7″ Cup Difference.
  3. A 7-inch difference corresponds to a UK ‘F’ cup.

Output: The Elomi bra size calculator suggests a starting size of 40F. Sarah is also shown her sister sizes of 38FF (for a tighter band) and 42E (for a looser band).

Example 2: Re-evaluating Size After Body Changes

Maria has been wearing a 36G for years but finds it’s no longer comfortable. She uses this Elomi bra size calculator to check her fit.

  • Input – Underbust: 37.5 inches
  • Input – Bust: 48 inches

Calculation Process:

  1. The calculator rounds the 37.5-inch underbust up to a Band Size of 38.
  2. It calculates the cup difference: 48″ (Bust) – 38″ (Band) = 10″ Cup Difference.
  3. A 10-inch difference corresponds to a UK ‘GG’ cup.

Output: The calculator recommends a 38GG. This shows Maria that her band size has gone up and her cup volume has also increased. This result from the Elomi bra size calculator empowers her to shop for a size that will offer better support and comfort.

How to Use This Elomi Bra Size Calculator

Using our Elomi bra size calculator is a straightforward process designed to give you fast, reliable results. Follow these simple steps:

  1. Enter Underbust Measurement: Using a soft measuring tape, measure around your ribcage directly underneath your bust. Make sure the tape is snug and level all the way around. Enter this value in inches into the first field.
  2. Enter Bust Measurement: Measure around the fullest point of your bust. The tape should be level and not too tight. Enter this value in inches into the second field.
  3. Read Your Results: The Elomi bra size calculator will automatically display your calculated UK bra size. The main result is your recommended starting point.
  4. Review Intermediate Values: The calculator also shows you the calculated band size and the difference in inches used to determine your cup size. This helps you understand how the result was derived.
  5. Check Sister Sizes: Use the sister size table to find alternative fits. If the cups of your calculated size fit well but the band is too tight, go to your “Up” sister size (e.g., from 38F to 40E). If the band is too loose, try the “Down” sister size (e.g., from 38F to 36FF). Our guide on understanding sister sizes provides more detail.

Key Factors That Affect Elomi Bra Size Results

While an Elomi bra size calculator provides an excellent starting point, several factors can influence your true best fit. Always consider the following:

  • Accurate Measurements: The most crucial factor. A loose or angled measuring tape can skew results. Measure while standing upright and un-padded. For more tips, see our full bra fitting guide.
  • Bra Style and Shape: Different Elomi styles (e.g., plunge, balcony, full cup) are designed for different breast shapes. A plunge might work for one person, while another needs the coverage of a full cup like in an Elomi Cate review, even in the same size.
  • Band Firmness: The band should provide about 80-90% of the support. It needs to be snug and parallel to the floor. A band that rides up is too loose. Using an Elomi bra size calculator helps find a firm starting band size.
  • Cup Containment: Your breasts should be fully contained within the cups with no spilling over the top (quad-boob) or gapping. The center gore (front panel) should sit flat against your sternum.
  • Time of the Month: Hormonal fluctuations can cause breasts to swell, temporarily changing your size. It’s best to measure at a neutral point in your cycle.
  • Age and Body Changes: Weight fluctuations, pregnancy, and aging all impact breast tissue and ribcage size. We recommend using an Elomi bra size calculator every 6-12 months to ensure you’re still wearing the best size. Explore our content on the best bras for full busts for more options.

Frequently Asked Questions (FAQ)

1. How accurate is this Elomi bra size calculator?
This Elomi bra size calculator is highly accurate as it uses the modern UK sizing method favored by Elomi. It provides an excellent starting point, but always confirm the fit by trying on the bra. See our guide to troubleshoot bra fit issues.
2. Does Elomi use UK or US sizing?
Elomi is a UK brand and primarily uses UK sizing across all its products, which includes cup sizes like FF, G, GG, H, etc. Our Elomi bra size calculator provides your result in this UK standard.
3. Why doesn’t this calculator add 4 inches to my underbust?
The “add 4” method is an outdated technique from when bras were made with less elastic material. Modern bras, especially supportive ones from Elomi, require a firm band for proper support. Adding inches leads to a band that is too loose and unsupportive.
4. What if I am between band sizes?
If your underbust is an odd number (e.g., 37 inches), this Elomi bra size calculator rounds up to the nearest even number (38). You could also try the band size below (36) with a larger cup (a sister size) to see which provides better support.
5. Can I use this calculator for Elomi swimwear?
Yes, Elomi swimwear generally follows the same UK sizing as their lingerie. You can confidently use the results from this Elomi bra size calculator as your starting point for bikinis and tankinis.
6. My calculated size seems huge, is it correct?
Many women are surprised by their result from a proper Elomi bra size calculator because they are used to wearing bras with bands that are too large and cups that are too small. Trust the process and try the suggested size; you might be surprised by the comfort and support. Learn how to measure bra size correctly to be sure.
7. What is a sister size?
A sister size refers to an alternative bra size where the cup volume stays the same, but the band and cup letter change. For example, a 38F has the same cup volume as a 36FF and a 40E. They are useful for adjusting the fit of the band.
8. How often should I re-measure myself?
It’s recommended to use an Elomi bra size calculator and re-measure yourself every 6 to 12 months, or after any significant changes in your body, such as weight loss/gain or pregnancy.

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