Shoelace Length - Size by Eyelet Pairs and Lacing Style

Shoelace length is the total lace length needed to thread through every eyelet pair on a shoe and still leave enough slack to tie a secure bow at the top.

• • Replacing worn laces: Pick the right size when your old laces fray and the replacement has no label.
• • Upgrading to a new lacing style: Estimate how much extra length ladder, straight bar, or skip lacing will need before buying.
• • Buying laces as a gift or in bulk: Use the eyelet pair count to choose a length that fits running, casual, and dress shoes.
• • Speccing custom or work boots: Plan ahead for tall boots with 8 to 12 eyelet pairs and a longer bow allowance.

Most adult athletic shoes use laces between 60 and 120 cm (24 to 48 in); tall boots can need 180 to 240 cm (72 to 96 in). Ladder lacing can add 30 to 50 percent more length because the lace crosses extra horizontal segments.

If you also need to compare the labeled size on the shoe between US, UK, and EU charts, the shoe size converter covers the foot length side of the same purchase decision.

The calculator combines the geometry between eyelets with two fixed allowances: one for the bow at the top of the laces and one for the aglet tips at each end.

• eyeletPairs: Number of eyelet pairs on the shoe. Most athletic shoes use 4 to 7 pairs; tall boots can go up to 12 pairs.
• spacing: Horizontal distance between the left and right eyelet columns, measured across the throat of the shoe. A typical value is 4.5 to 6 cm.
• depth: Vertical distance between two adjacent eyelet rows on the same side, usually 1.5 to 2.5 cm.
• styleFactor: Multiplier for the lacing style. Criss-cross, straight bar, and skip use 1.0; ladder uses 1.5 (extra horizontal bar per row); loop lock uses 1.15 (extra pass through the top eyelet pair to form the anchor loops).
• bowAllowance: Extra length reserved for tying the bow at the top of the laces. 30 cm is enough for most adult shoes.
• agletAllowance: Small extra length for the plastic or metal tips at each end, usually around 2 cm.

The diagonal distance between two adjacent eyelets is the hypotenuse of a right triangle with the column spacing as one leg and the row depth as the other. The same Pythagorean idea shows up in the right triangle calculator, which solves for the hypotenuse, a leg, or an angle in one step.

According to Ian Fieggen Shoelace Site, the typical eyelet column spacing is around 5 cm and the typical eyelet row spacing is around 2 cm on most athletic shoes

According to Xpand Shoelaces Size Guide, leaving about 12 inches (roughly 30 cm) of extra length on each pair of laces is enough to tie a standard bow at the top

Four ideas that explain why the result changes with different shoes and lacing styles.

These four concepts work together: eyelet pair count sets how many times the lace crosses, diagonal travel distance sets how far each crossing goes, the lacing style adjusts for extra or fewer segments, and the bow and aglet allowances cover the ends. The total length the calculator returns is the same kind of linear measurement you would get from the roll length calculator, which figures out how many linear centimeters of material are still wound on a spool.

Follow these steps to get a recommendation that matches your shoe and your lacing style.

1. 1 Count the eyelet pairs on one side of the shoe: Look at the left side of the shoe and count the holes. The same number will appear on the right side; that count is the eyelet pair input.
2. 2 Measure the column and row spacing: Use a ruler or tape measure to find the horizontal distance between the left and right eyelet columns (across the throat) and the vertical distance between two adjacent rows on the same side.
3. 3 Pick the lacing style you plan to use: Choose criss-cross for the standard look, straight bar for a clean parallel pattern, skip for high arches, ladder for ankle support, or loop lock to thread anchor loops through the top eyelet pair (the bow is still tied normally).
4. 4 Adjust the bow and aglet allowances: Leave 30 cm for the bow on adult shoes, 20 cm on kids' shoes, and 40 cm if you like a long decorative bow. The aglet allowance defaults to 2 cm, which is enough for most metal or plastic tips.
5. 5 Read the recommended total length: The calculator returns the total length in centimeters and inches. Round up to the nearest centimeter or half inch when you actually buy laces so you have a small margin to work with.

For a 5 eyelet pair running shoe with 5 cm column spacing, 2 cm row depth, and criss-cross style, the calculator returns 85.9 cm (33.8 in). Round up to a 90 cm (36 in) lace for a comfortable bow.

If your ruler reads in inches and the eyelet spacing needs to be in centimeters, the cm to in calculator converts the measurement in either direction so the rest of the inputs land in the right unit.

A few practical wins that come from estimating lace length before you buy.

• • Avoid returning laces that are too short: Eyeballing a length off the existing lace often gives a result that is barely long enough and uncomfortable to tie. The calculator adds a small buffer so the new lace actually fits.
• • Save money on bulk purchases: When you buy laces in a multipack, knowing the right length for each shoe lets you buy fewer wrong sizes and stock the right length for each pair in the closet.
• • Plan lacing style upgrades: Ladder lacing, bar lacing, and skip lacing all use different total lengths. The calculator gives you the exact size to buy before you try a new look.
• • Fit specialty footwear accurately: Tall boots, ice skates, and figure skates often have 8 to 12 eyelet pairs and unusual column spacing. A quick estimate avoids the trial and error of swapping laces three or four times.
• • Match metric and imperial sizes: Lace packages are often labeled in inches, but the calculator shows centimeters and inches side by side so you can pick the right one.
• • Help kids and growing teens: Children's shoes change size quickly. Estimating the right lace length each time means the spare laces in the closet actually fit the new pair of school shoes.

When the rest of the household is on a DIY budget, the fabric calculator helps size the same kind of strip material you would cut custom laces from, like paracord, cotton tape, or waxed webbing.

Inputs and conditions that move the recommended length up or down.

• • The calculator assumes a clean diagonal between adjacent eyelets; angled eyelets, hooks, or non-rectangular spacing can shift the actual length a few centimeters either way.
• • Round elastic laces, no-tie silicone laces, and zipper lacing systems all use different length rules. The calculator is built for flat or round laces through standard eyelets.
• • A 30 cm bow allowance covers most adult shoes, but a long decorative loop, a double knot, or a barrel knot should add another 5 to 15 cm.

Tweak the bow and aglet allowances for a custom fit, and use the lacing style selector to compare lengths across criss-cross, ladder, and loop lock before committing to a specific lace.

According to Ian Fieggen Shoelace Site - Lacing Methods, ladder lacing consumes roughly 50% more lace than criss-cross because the lace travels across extra horizontal segments

Quilt binding strips are long linear pieces of fabric that wrap the outer edge of a quilt, so the quilt calculator gives a natural second opinion on linear strip length when you are cutting custom laces from cotton tape, paracord, or waxed webbing to match the original pair.