Femme calculant sa taille de soutien-gorge grâce à une calculatrice, avant de découvrir le calcul automatique en ligne de taille de soutien-gorge.

Online Automatic Bra Size Calculator

Written by: Laetitia Lanteri

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Published on

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Last updated on

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Time to read 7 min

Are you tired of ill-fitting bras? Thanks to our automatic bra size calculation method, there's no need to guess or feel lost with size conversions. This article explains step by step how to take your measurements, use our online calculator, and finally find the lingerie perfectly suited to your body shape. Discover the secret to impeccable support and comfort, all without leaving your home!

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How to calculate my bra size?

The fitting room experience in a lingerie store can be an embarrassing moment. The saleswoman peeking behind the curtain unexpectedly, the moment she offers to take your measurements... You should have done it yourself at home. Don't panic, calculating your exact bra size is simpler than it seems. And it will save you an awkward moment in a crowded store. Start by measuring your underbust and bust. These two measurements are essential to determine the depth of cup suitable for your body shape.


Get a measuring tape and place it around your ribcage, just under your bust, to get your underbust measurement. Then, measure the bust by positioning the tape at the level of the nipple. The difference between these two measurements will give you the cup size that corresponds to your figure. At Les Petits Imprimés, we have everything planned so you don't have to pull out the calculator, find below our automatic bra size calculator!

Measurement guide

How to take my measurements?

Measure directly on your body using a measuring tape, without pulling too tight. For an accurate result, remove your bra or wear one without underwire or rigid padding.


My bra size is:

What method to measure my size?

The most reliable method for taking your measurements is to use a flexible measuring tape. Wear a non-padded or wireless bra for more accuracy. Make sure the tape is horizontal and not too tight. To measure the band, place it just under your bust, then note the measurement. For the depth, measure the bust at its fullest point. These measurements will allow you to determine your size accurately.

How to choose the right size?

Do you not understand the existing size matches? We have created a bra size chart that is clear and comprehensive so you can find your French size. If you are ordering from abroad, a UK bra size guide will be useful, or a US bra size converter. Take into account your back measurement and cup size to find the ideal combination. Feel free to try several sizes to perfectly adjust the bra to your body. A proper fit is essential for impeccable comfort and support.

Woman choosing the right bra size.

Bra size matching guide


The tables below will help you determine your ideal bra size. Start by measuring your bust to find your bra size. Then, use your bust measurement to determine the appropriate cup size.


Example:
- If your bust measurement is between 73 and 77 cm, your bra size is 90.
- For a bra size of 90, a bust measurement between 89 and 91 cm corresponds to a cup B.


Bra size based on bust measurement:


Bust measurement (cm) Bra size
58 - 62 75
63 - 67 80
68 - 72 85
73 - 77 90
78 - 82 95
83 - 87 100
88 - 92 105
93 - 97 110
98 - 102 115
103 - 107 120
108 - 112 125
113 - 117 130
118 - 122 135
123 - 127 140
128 - 132 145

Bra cup size based on bust measurement:


★ Small coverage cups

Bra size Cup AA
(Bust measurement in cm)
Cup A
(Bust measurement in cm)
Cup B
(Bust measurement in cm)
75 70 - 72 72 - 74 74 - 76
80 75 - 77 77 - 79 79 - 81
85 80 - 82 82 - 84 84 - 86
90 85 - 87 87 - 89 89 - 91
95 90 - 92 92 - 94 94 - 96
100 95 - 97 97 - 99 99 - 101
105 100 - 102 102 - 104 104 - 106
110 105 - 107 107 - 109 109 - 111
115 110 - 112 112 - 114 114 - 116
120 115 - 117 117 - 119 119 - 121
125 120 - 122 122 - 124 124 - 126
130 125 - 127 127 - 129 129 - 131
135 130 - 132 132 - 134 134 - 136
140 135 - 137 137 - 139 139 - 141
145 140 - 142 142 - 144 144 - 146

★ Medium coverage cups

Bra size Cup C
(Bust measurement in cm)
Cup D
(Bust measurement in cm)
Cup E
(Bust measurement in cm)
75 76 - 78 78 - 80 80 - 82
80 81 - 83 83 - 85 85 - 87
85 86 - 88 88 - 90 90 - 92
90 91 - 93 93 - 95 95 - 97
95 96 - 98 98 - 100 100 - 102
100 101 - 103 103 - 105 105 - 107
105 106 - 108 108 - 110 110 - 112
110 111 - 113 113 - 115 115 - 117
115 116 - 118 118 - 120 120 - 122
120 121 - 123 123 - 125 125 - 127
125 126 - 128 128 - 130 130 - 132
130 131 - 133 133 - 135 135 - 137
135 136 - 138 138 - 140 140 - 142
140 141 - 143 143 - 145 145 - 147
145 146 - 148 148 - 150 150 - 152

★ Full coverage / large size cups

Bra size Cup F
(Bust measurement in cm)
Cup G
(Bust measurement in cm)
Cup H
(Bust measurement in cm)
75 82 - 84 84 - 86 86 - 88
80 87 - 89 89 - 91 91 - 93
85 92 - 94 94 - 96 96 - 98
90 97 - 99 99 - 101 101 - 103
95 102 - 104 104 - 106 106 - 108
100 107 - 109 109 - 111 111 - 113
105 112 - 114 114 - 116 116 - 118
110 117 - 119 119 - 121 121 - 123
115 122 - 124 124 - 126 126 - 128
120 127 - 129 129 - 131 131 - 133
125 132 - 134 134 - 136 136 - 138
130 137 - 139 139 - 141 141 - 143
135 142 - 144 144 - 146 146 - 148
140 147 - 149 149 - 151 151 - 153
145 152 - 154 154 - 156 156 - 158
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What tools to calculate my size?

In addition to our online size calculator that can help you. These automatic calculation tools take your measurements into account to suggest the most suitable size. You can also use a converter if you know your size in another measurement system. Advanced technologies, like AI size calculators, offer even greater accuracy in determining the ideal bra size.

Woman measuring her bust with a measuring tape.

How to check my bra size?

Once you have your bra, it is important to check the fit. Look in the mirror and make sure the band is horizontal and does not ride up in the back. The cups should fully encase the breast without creating wrinkles or indentations. Properly adjusting the straps is also necessary to achieve the perfect fit. Feel free to make a few movements to ensure everything stays in place.

What sizes are available?

In lingerie, a wide variety of sizes exists to fit all silhouettes, from standard bra sizes to plus sizes, including nursing or post-operative bras. Sizes can vary between French, American, or British sizes. Some models also offer S-M-L sizes for bustiers or bralettes. Therefore, it is important to check size correspondences when shopping, especially online.


At Les Petits Imprimés, we understand the importance of well-fitted lingerie. Our collections are designed to meet the needs of every woman, offering skin-friendly, comfortable models that boost self-confidence. Feel free to use our online size calculator to find the perfect piece!

  • Measure your underbust circumference.
  • Measure your bust at the fullest point.
  • Enter these measurements into a calculator to get your size.

By following these simple steps, you can buy lingerie with complete confidence, knowing it will be perfectly suited to your body. And remember, a good bra size makes all the difference for your daily comfort.

If you have any doubts, feel free to contact us, we are available to recommend the best pieces that match your criteria!

Have a question in mind? We have the answer!

How can I be sure not to make a mistake when taking my measurements?

Use a soft measuring tape, keep it horizontal, and measure without tightening. Wear a non-padded bra for more accuracy. Then, enter your measurements into the automatic calculator.

What to do if my size varies between brands?

Sizes can differ. Always check the brand-specific size guides and use the converters (FR/UK/US) for more accuracy.

How do I know if my bra is well-fitted?

The band should be horizontal and not ride up. The cups should envelop the breast without wrinkles or demarcations. Adjust the straps and make some movements to test the support.

Profile picture of Laëtitia Lanteri: expert writer in fashion for 7 years.

Laëtitia Lanteri

Experienced writer with +1200 articles published in 7 years, Laëtitia deciphers the latest fashion trends and delivers fresh and current ideas for a bold style.


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