Label Size Chart and Measuring Guide in Inches and Millimeters

Start With the Flat Label Area, Not the Container

Label dimensions describe the finished label. Start with the available contact area, then account for required content, application tolerances, and channel rules. On a cylindrical bottle, measure the straight vertical band between the shoulder and base curves for height, and the desired portion of the circumference for width. Tapered containers may need a shaped label rather than a rectangle. On a box or flat pouch panel, measure the usable area between seams, gussets, and edges.

Measure the height first, then the width, and write both down in the same unit. If your ruler is metric and your printer or die library lists sizes in inches, convert once and keep one master number set. Mixing units across documents is an easy way to introduce rounding or transcription errors that can leave a label too tall for its panel.

• Round containers: measure the straight vertical band for height; measure the circumference with a paper strip or flexible tape for width.
• Flat panels: measure the flat rectangle only, staying clear of seams, zippers, and curved edges.
• Always record height and width in one unit system and convert once.

Inch to Millimeter Conversion Chart

One inch equals exactly 25.4 millimeters, so to convert inches to millimeters, multiply the inch value by 25.4. To go the other way, divide millimeters by 25.4. The table below gives example dimensions rounded to one decimal place in millimeters. Application ideas are illustrative, not fit recommendations. Record width and height explicitly when ordering; a single dimension does not define a complete label shape.

When a converted number is close to a round metric size, such as 50.8 mm versus 50 mm, ask your supplier which die actually exists in their library rather than assuming both are available. Send Teal your final dimensions and review the proof to confirm the size before approving production.

How Much of the Circumference to Cover

On a round container, a full-circumference label needs either a planned overlap or a precise butt joint, and the ends can lift if the fit is off, so many brands leave a gap instead. A practical planning range we suggest is 60 to 80 percent of the circumference for a wrap-style label, leaving a gap at the back. For a simple front label on a bottle, 40 to 60 percent of the circumference often looks balanced.

This is a design guideline, not a rule. The right percentage depends on the container shape, the artwork, and how the label is applied. Print a paper mockup at final size, wrap it around the real container, and look at it before committing.

• Wrap front label: plan for roughly 60 to 80 percent of circumference.
• Front-only label on a bottle: roughly 40 to 60 percent of circumference.
• Always test with a paper mockup at final printed size.

A Hypothetical Worked Example: Measuring a Straight-Sided Jar

Suppose you have a straight-sided jar with a circumference of 10.5 inches and a flat vertical band 3.25 inches tall, and you want a single wrap label covering about 75 percent of the circumference.

Multiply 10.5 by 0.75 to get 7.875 inches of arc coverage, initially leaving a 2.625-inch gap. For this hypothetical exercise, choose a smaller working width of 7.6 inches to allow extra placement clearance; the resulting gap is 2.9 inches. No additional seam-gap deduction is needed. For height, choose 0.125 inch of clearance at both top and bottom: 3.25 minus 0.25 equals 3.0 inches. The illustrative target is 3.0 inches high by 7.6 inches wide; these clearance choices are not universal requirements.

Converting to millimeters: 3 inches times 25.4 equals 76.2 mm, and 7.6 inches times 25.4 equals 193.0 mm. If the nearest available die is 3 x 7.5 inches, the label covers 7.5 divided by 10.5, or about 71 percent of the circumference, which still sits inside the 60 to 80 percent planning range. These numbers are an illustrative exercise with a hypothetical jar, not a die recommendation for your specific container.

Channel Requirements: The Amazon FBA Example

Some channels specify label dimensions outright. The cited Amazon FBA guidance specifies seller-applied Amazon barcode labels 1 to 2 inches tall and 2 to 3 inches wide, printed in black ink on non-reflective adhesive-backed paper, with a laser printer at 300 DPI recommended for best results. It directs placement on a smooth, flat surface away from corners, edges, and curves. When no extra packaging is needed, cover original manufacturer barcodes to prevent unintended scans. When extra packaging is required, place the Amazon label on its outside. Do not cover Transparency codes or let them cover other labels.

This is a useful illustration of how channel rules can override your design preferences. Before finalizing sizes for any marketplace, retailer, or fulfillment program, confirm the current labeling requirements in your own seller agreement or channel documentation, because these specifications can change and can differ by product category.

• Amazon FBA seller-applied barcode labels: 1 to 2 inches tall, 2 to 3 inches wide per Amazon's published guidance.
• Placement on a smooth, flat surface, not over corners, edges, or curves.
• For Amazon barcode labeling without extra packaging, cover original manufacturer barcodes; with extra packaging, label the outside. Keep Transparency codes unobstructed.
• Confirm current channel rules in your own agreement before printing.

Size Affects More Than Fit: Adhesion and Surface

Label size and adhesive choice should be planned together. Surface energy matters: according to Avery Dennison's adhesive technical guidance, high surface energy substrates such as PET and glass facilitate better adhesion, while low surface energy substrates such as HDPE are more challenging for adhesives. That same guidance notes that moisture, dirt, and dust on the substrate affect bonding, and that application temperature matters, stating that most Avery Dennison adhesives are tailored for ambient conditions with a minimum application temperature of +5 degrees Celsius.

For sizing, we recommend keeping label edges on the straightest part of the container and away from tight curves, especially on HDPE or in cooler application conditions. Confirm the adhesive choice with your supplier for the actual substrate and temperature conditions, and test labeled samples before production.

• Low surface energy plastics such as HDPE are more challenging for adhesives than high surface energy substrates like PET or glass, per Avery Dennison.
• Clean, dry surfaces bond better; dust and moisture weaken adhesion.
• Avery Dennison states most of its adhesives are tailored for ambient conditions, with a minimum application temperature of +5 degrees Celsius; check the specific adhesive's data.
• Confirm adhesive selection with your supplier for the actual container material.

Practical Measuring Checklist

This checklist is Teal's editorial planning framework for sizing a label. It covers the measuring and conversion steps we recommend verifying before requesting a quote or proof.

Work through it once per container, and re-check whenever a supplier changes a jar, bottle, or carton, because a 2 mm difference in a mold can turn a well-fitting label into one that overlaps a curve.

• Measure the flat or straight band height in one unit.
• Measure circumference or panel width with a flexible tape or paper strip.
• Decide the percentage of circumference or panel to cover.
• Allow appropriate top, bottom, and side clearances. For wrap labels, plan a gap, butt joint, or overlap; do not deduct a gap again if your chosen coverage width already leaves it.
• Convert inches to millimeters by multiplying by 25.4, or divide millimeters by 25.4 for inches.
• Print a paper mockup at final size and test it on the real container.
• Check any channel, retail, or regulatory labeling requirements that constrain size.
• Send the final dimensions and container details to your supplier for die confirmation.

Questions about label size chart and measuring