Under Armour

Project Rock 3

Black

Our tool compares official Under Armour size charts to find your perfect size. No measuring needed.

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Foot measurement
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UK 7/8.5 🇬🇧 UK 7.5/9 🇬🇧 UK 8/9.5 🇬🇧 UK 8.5/10 🇬🇧 UK 9/10.5 🇬🇧 UK 9.5/11 🇬🇧 UK 10/11.5 🇬🇧 UK 10.5/12 🇬🇧 UK 11/12.5 🇬🇧 UK 11.5/13 🇬🇧 UK 12/13.5 🇬🇧 UK 12.5/14 🇬🇧 UK 13/14.5 🇬🇧 UK 14/15.5 🇬🇧 UK 15/16.5 🇬🇧
The Under Armour Project Rock 3 runs true to size. Order your normal Under Armour size for the best fit.
Foot Length EU UK
0 - 400 mm 6 7
400 - 410 mm 7 8
410 - 420 mm 7,5 8,5
420 - 430 mm 8,5 9,5
430 - 440 mm 9 10
440 - 450 mm 10 11
450 - 460 mm 11 12
460 - 470 mm 11,5 12,5
470 - 480 mm 12,5 13,5
480 - 490 mm 13,5 14,5
490 - 500 mm 14,5 15,5
Frequently Asked Questions
The Under Armour Project Rock 3 runs true to size. Order your normal size for the best fit.
Your Under Armour Project Rock 3 size depends on your foot length and the shoes you currently wear. Use our size finder tool to get a personalized recommendation based on shoes you already own. Alternatively, measure your foot length in cm and use the size chart above to find your Under Armour size.
Yes, the Under Armour Project Rock 3 runs true to size compared to standard Under Armour sizing. Order your normal size.
Use the size chart above to convert between EU, US and UK sizes for Under Armour Project Rock 3. Each size shows the corresponding foot length in mm so you can find your perfect fit.

Under Armour is an American sports equipment company known for performance athletic footwear and apparel. The brand focuses on innovative materials and technology for various sports and training activities.

Under Armour shoes typically run true to size, with a snug performance fit in their training and running shoes. Basketball shoes may fit slightly narrow for a locked-in feel.

Stick with your normal athletic shoe size for Under Armour. Their running shoes are designed for a secure fit, so if you prefer a roomier toe box, consider going up half a size.

Last updated: 2026-02-08 21:22:30