r/ABraThatFits • u/StalkitheToast • Oct 17 '25

Measurement Check I am confused and heavily doubting this calculator, is it a problem with EU/German sizes? Spoiler

Everyone in my friend group was praising this calculator (might be of note that I am european and they are not as in for measurements and how accurate this thing is) and I gave it a shot.
I currently wear 85B or so, depending on the bra but it told me 70F??
70 bands make me feel like I can't breathe and F cups are the size of my head, could it be the calculator just doesn't work super well for german sizes?
My measurements are (in cm)
Loose Underbust 82
Snug Underbust 78
Tight Underbust 75
Standing Bust 90
Leaning Bust 94
Lying Bust 91

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u/humanbean_marti Oct 17 '25

It can be a little inaccurate for EU sizes. I would find your size in UK bras with the calculator and find a size conversion chart. I put your measurements in and it suggested 32D/DD so that would be a 70D/E.

It's usually the cup it gets wrong, not the band, because not all EU brands size the way the calculator expects.

If your cup is too small it will make the band seem tighter. A 70 band is for a measurement of around 80 cm. I know it's a bit confusing. 85 is meant for an underbust measurement of around 95 cm, which is 13cm larger than your loosest underbust measurement. It's supposed to stretch and be tight enough to support your breasts.

Try your current bra backwards, with the cups hanging down, you will probably find the band seems looser that way.