Caliper BOA
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Because the foot is three-dimensional, any two-dimensional measuring tool, such as a ruler or Brannok device®, can only approximate your true shoe size. Please also keep in mind that sizing may vary slightly between manufacturers.
Make sure you are standing and wearing the socks or stockings you will wear with your new shoes or boots. Place your heel against a straight edge. Place a ruler beside your foot and measure from the straight edge at your heel to the tip of your longest toe. Using one of the following charts, convert your inch or centimeter measurement to your shoe size.
Note: It's very common for one foot to be slightly larger than the other. Be sure to measure both feet and use the larger size to ensure comfort.
Properly fit boots should be snug in the instep, arch and ball of foot. Heel slippage is normal for a good fit. Boots will ‘break in’ and conform to your foot.
Women's Sizes
| US | Euro | UK | Inches | CM |
|---|---|---|---|---|
| 4 | 35 | 2 | 8.1875" | 20.8 |
| 4.5 | 35 | 2.5 | 8.375" | 21.3 |
| 5 | 35-36 | 3 | 8.5" | 21.6 |
| 5.5 | 36 | 3.5 | 8.75" | 22.2 |
| 6 | 36-37 | 4 | 8.875" | 22.5 |
| 6.5 | 37 | 4.5 | 9.0625" | 23 |
| 7 | 37-38 | 5 | 9.25" | 23.5 |
| 7.5 | 38 | 5.5 | 9.375" | 23.8 |
| 8 | 38-39 | 6 | 9.5" | 24.1 |
| 8.5 | 39 | 6.5 | 9.6875" | 24.6 |
| 9 | 39-40 | 7 | 9.875" | 25.1 |
| 9.5 | 40 | 7.5 | 10" | 25.4 |
| 10 | 40-41 | 8 | 10.1875" | 25.9 |
| 10.5 | 41 | 8.5 | 10.3125" | 26.2 |
| 11 | 41-42 | 9 | 10.5" | 26.7 |
| 11.5 | 42 | 9.5 | 10.6875" | 27.1 |
| 12 | 42-43 | 10 | 10.875" | 27.6 |
Men's Sizes
| US | Euro | UK | Inches | CM |
|---|---|---|---|---|
| 6 | 39 | 5.5 | 9.25" | 23.5 |
| 6.5 | 39 | 6 | 9.5" | 24.1 |
| 7 | 40 | 6.5 | 9.625" | 24.4 |
| 7.5 | 40-41 | 7 | 9.75" | 24.8 |
| 8 | 41 | 7.5 | 9.9375" | 25.4 |
| 8.5 | 41-42 | 8 | 10.125" | 25.7 |
| 9 | 42 | 8.5 | 10.25" | 26 |
| 9.5 | 42-43 | 9 | 10.4375" | 26.7 |
| 10 | 43 | 9.5 | 10.5625" | 27 |
| 10.5 | 43-44 | 10 | 10.75" | 27.3 |
| 11 | 44 | 10.5 | 10.9375" | 27.9 |
| 11.5 | 44-45 | 11 | 11.125" | 28.3 |
| 12 | 45 | 11.5 | 11.25" | 28.6 |
| 13 | 46 | 12.5 | 11.5625" | 29.4 |
| 14 | 47 | 13.5 | 11.875" | 30.2 |
| 15 | 48 | 14.5 | 12.1875" | 31 |
| 16 | 49 | 15.5 | 12.5" | 31.8 |
Toddler/Infant Sizes (0-12 Months)
| US | Euro | UK | Inches | CM |
|---|---|---|---|---|
| 0.5 | 16 | 0 | 3.25" | 8.3 |
| 1 | 16 | 0.5 | 3.5" | 8.9 |
| 1.5 | 17 | 1 | 3.625" | 9.2 |
| 2 | 17 | 1 | 3.75" | 9.5 |
| 2.5 | 18 | 1.5 | 4" | 10.2 |
| 3 | 18 | 2 | 4.125" | 10.5 |
| 3.5 | 19 | 2.5 | 4.25" | 10.8 |
| 4 | 19 | 3 | 4.5" | 11.4 |
| 4.5 | 20 | 3.5 | 4.625" | 11.7 |
| 5 | 20 | 4 | 4.75" | 12.1 |
Children's Sizes (1-5 Years)
| US | Euro | UK | Inches | CM |
|---|---|---|---|---|
| 5.5 | 21 | 4.5 | 5" | 12.7 |
| 6 | 22 | 5 | 5.125" | 13 |
| 6.5 | 22 | 5.5 | 5.25" | 13.3 |
| 7 | 23 | 6 | 5.5" | 14 |
| 7.5 | 23 | 6.5 | 5.625" | 14.3 |
| 8 | 24 | 7 | 5.75" | 14.6 |
| 8.5 | 25 | 7.5 | 6" | 15.2 |
| 9 | 25 | 8 | 6.125" | 15.6 |
| 9.5 | 26 | 8.5 | 6.25" | 15.9 |
| 10 | 27 | 9 | 6.5" | 16.5 |
| 10.5 | 27 | 9.5 | 6.625" | 16.8 |
| 11 | 28 | 10 | 6.75" | 17.1 |
| 11.5 | 29 | 10.5 | 7" | 17.8 |
| 12 | 30 | 11 | 7.125" | 18.1 |
Youth Sizes (6-12 Years)
| US | Euro | UK | Inches | CM |
|---|---|---|---|---|
| 12.5 | 30 | 11.5 | 7.25" | 18.4 |
| 13 | 31 | 12 | 7.5" | 19.1 |
| 13.5 | 31 | 12.5 | 7.625" | 19.4 |
| 1 | 32 | 13 | 7.75" | 19.7 |
| 1.5 | 33 | 14 | 8" | 20.3 |
| 2 | 33 | 1 | 8.125" | 20.6 |
| 2.5 | 34 | 1.5 | 8.25" | 21 |
| 3 | 34 | 2 | 8.5" | 21.6 |
| 3.5 | 35 | 2.5 | 8.625" | 21.9 |
| 4 | 36 | 3 | 8.75" | 22.2 |
| 4.5 | 36 | 3.5 | 9" | 22.9 |
| 5 | 37 | 4 | 9.125" | 23.2 |
| 5.5 | 37 | 4.5 | 9.25" | 23.5 |
| 6 | 38 | 5 | 9.5" | 24.1 |
| 6.5 | 38 | 5.5 | 9.625" | 24.4 |
| 7 | 39 | 6 | 9.75" | 24.8 |
For jobsites where the work is relentless, the Caliper BOA® brings the speed and secure fit of the BOA® Fit System to one of our most reliable boots. With just a turn of the dial, the integrated system quickly and evenly secures your foot for a precise, supportive fit that’s as custom as it gets. When your shift is over, a tug on the release lets you clock out in an instant. Thanks to BOA®’s design, there’s never a need to take off your work gloves. With full-grain leather, Danner Dry waterproofing and waterproof lacing, exceptional cushioning and a rugged slip-resistant outsole to support you in the most demanding work conditions, the Caliper BOA® is one tough boot built for the toughest jobs.
Details
- Designed for all-around work
- Warm to cool weather
- Waterproof Danner® Dry
- Aluminum toe
- Electrical hazard (EH) rated
- Oil & slip resistant
- BOA® Fit System
Handmade With Care to Last
FAQs
How do I choose the right boot size?
Our boots fit true to size, but some styles may require a snug fit at first. Check our size guide or visit a French’s store near you for expert fitting.
Are your boots made from real leather?
Yes! French’s boots are crafted from premium, genuine leather and high-quality exotic skins for durability and comfort.
Do you offer free shipping?
Yes! We offer free shipping on orders over $99 within the U.S. Standard shipping rates apply for orders below this amount.
How long does shipping take?
Orders are typically processed within 1-2 business days. Standard shipping takes 3-7 business days, while expedited options are available at checkout.
What is your return policy?
We offer hassle-free returns within 30 days of purchase, as long as the boots are unworn and in original packaging.
