Bra Size Calculator France
France uses French sizing, which is EU sizing with 15 added to the band number. An EU 85 is a French 100. Once you know that rule, French labels stop looking mysterious.
Enter Your Measurements
Sizes on this page are estimates. Sizing varies by brand and style, so always check the brand’s own size chart and try on before you buy. Nothing here is medical advice.
How to measure
You need a soft measuring tape and two minutes. Underbust: wrap the tape directly under your bust, level and snug, breathing out normally. Bust: wrap it around the fullest part, level across your back, without pressing in. Enter both numbers above, in inches or centimetres. The full steps are in the step-by-step measuring guide.
France bra size chart
| FR band | EU band | US / UK band |
|---|---|---|
| 85 | 70 | 28 |
| 90 | 75 | 30 |
| 95 | 80 | 32 |
| 100 | 85 | 34 |
| 105 | 90 | 36 |
| 110 | 95 | 38 |
Cups run by the difference between your bust and band measurements. One inch of difference is roughly one cup step in US and UK sizing; in centimetre systems the steps are 2.5 cm.
How France sizing works
French bands run 85, 90, 95, 100, 105, 110 — each one exactly 15 above its EU equivalent. Cups run A, B, C, D, E, F, G, H, consecutive like the EU, with no doubled letters.
A worked example
A 34-inch underbust with a 3-inch difference is a French 100D, an EU 85D, and a US 34C.
Converting to and from France sizes
To convert a French size, subtract 15 to get the EU band, then convert as usual: a French 100D is an EU 85D, a US 34C and a UK 34C.
Common measuring mistakes
Measuring over a padded bra lifts and compresses, giving a smaller bust reading. Measure without a bra or in a thin, unpadded one. Pulling the tape too tight underestimates the band. Letting the tape droop at the back overestimates the bust. Using an old size without re-measuring — weight, pregnancy, breastfeeding and aging all change the numbers, so re-measure every year or two.
Shopping tips for France
French stores label in French sizing, but international brands sold in France sometimes show EU or UK sizes instead. Always check which number is on the tag: a French 100 and an EU 85 are the same band, and mixing them up is the most common French-sizing mistake.
One habit covers every system: check the system on the label, convert both the band and the cup, and try the bra on before committing to more than one. Returns are easier than a drawer full of the wrong size.
Frequently Asked Questions
What sizing system does France use?
French bands run 85, 90, 95, 100, 105, 110 — each one exactly 15 above its EU equivalent. Cups run A, B, C, D, E, F, G, H, consecutive like the EU, with no doubled letters. If a label you are reading does not match this system, it is probably an import — convert it rather than guessing.
How do I convert my US or UK size to a France size?
To convert a French size, subtract 15 to get the EU band, then convert as usual: a French 100D is an EU 85D, a US 34C and a UK 34C. The global size converter does this translation for any size in one step.
What if my size is not sold, or I am between sizes?
Try a sister size: one band down and one cup up, or one band up and one cup down, keeping roughly the same cup volume. If you are between cups, start with the larger cup — you can tighten a band, but you cannot add cup volume.
Do brands in France vary?
Yes. Every system is a starting point, not a guarantee: band stretch, cup depth, wire width and grading vary by brand and style. Always check the brand's own chart and try on when you can.