Size Guide

44A Bra Size

Everything you need to know about bra size 44A — measurements, sister sizes, international equivalents, and fit advice.

Last reviewed on 28 April 2026.

Measurements for 44A

Underbust (Band)
43 to 45 inches (109 to 114 cm)
Full Bust
approximately 46 inches (117 cm)

44A is built for an underbust ribcage measurement that falls in the 43–45 inch range, with a full-bust measurement around 46 inches. The band number — 44 — is a fuller band size where most of the support comes from a strong, snug band rather than the straps. The cup letter — A — describes the difference between the two measurements; an A cup means the full bust is about one inch larger than the underbust — light shaping and bralette styles are common at this size.

44A in Other Sizing Systems

US
44A
UK
44A
EU
100A
FR
115A
AU
22A

EU and FR sizing read the band in centimetres, which is why 44A maps to 100A and 115A respectively — the same body, expressed in different units. AU sizing uses a small numeric scale (22A for this band). UK sizing shares the band number with the US but parts ways at the cup once you go past D, so 44A reads as 44A on a UK label.

Sister Sizes for 44A

These sizes have the same cup volume as 44A. Try them if the band feels too tight or too loose.

42B 44A 46AA

← Tighter band, bigger cup · Looser band, smaller cup →

Sister sizes are useful when the cup of your 44A fits well but the band is wrong — too loose by the end of the day, or too tight to clip up comfortably. Going one band smaller and one cup larger keeps the cup volume the same while tightening the band; going the other way loosens the band without losing cup space. Read the full sister-size matrix if you want to see how this works for every size at once.

Fit Tips for 44A

A-cup bras often benefit from light padding for shape, though many wearers prefer unpadded cups. Bralettes and triangle styles are common and comfortable for everyday wear.

If your 44A bra is gapping at the top of the cup, the cup may be too large or the wrong shape — try a demi-cup or balconette before assuming the size is wrong. If the centre piece between the cups (the gore) does not lay flat against your sternum, the cup is almost certainly too small; go up one cup. If the band rides up across your back during the day, the band has stretched out or was too loose to begin with — drop one band size and add one cup to keep the same cup volume.

For more detailed troubleshooting, the Fit Test on the home page covers six common visible problems and the size or shape change that usually addresses each one. The guide to measuring mistakes covers the most common reasons a calculation comes out wrong in the first place.

Related sizes

If 44A is close but not quite right, these neighbouring sizes are the most useful next places to look:

44AA · one cup smaller44B · one cup larger42A · one band smaller46A · one band larger42B · sister size — tighter band46AA · sister size — looser band

Not sure about your size? Measure yourself and double-check.

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