Corner Radius Chart for Labels | Intertronix Custom Labels
Corner radius chart for custom labels: your complete guide to perfect cuts
Intertronix corner radius reference chart — all standard sizes from 1/64" to 1" with fractional, decimal inch, and millimeter values
Find the right corner radius for die-cut and square-cut labels — from 1/64" to 1" — with fractional, decimal, and metric conversions in one place. Made to order in the USA by Intertronix.
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What is a corner radius on a label?
A corner radius refers to the size of the circular arc used to round each corner of a label. It is measured as the radius of an imaginary circle whose edge follows the corner curve. A 0" radius produces a sharp 90° corner, while a large radius such as 1/2" (12.7mm) produces a pill- or stadium-shaped label.
Corner radius is specified in fractions of an inch, decimal inches, or millimeters. The Intertronix corner radius chart provides all three formats side-by-side so you can communicate your specs precisely — whether you're working with a designer, a packaging engineer, or placing an order directly.
Why does corner radius matter for custom labels?
- Adhesion & durability: Rounded corners (1/16"–1/8") significantly reduce edge lifting compared to sharp corners, extending label life on curved or handled surfaces.
- Brand aesthetics: Larger radii create a softer, modern look popular in cosmetics and food packaging. Smaller radii suggest precision — common in industrial, security, and tamper-evident labels.
- Die-cut compatibility: Every corner radius requires a specific die. Intertronix maintains tooling for all standard sizes shown in the chart.
- Regulatory compliance: Some labeling standards specify minimum corner radii to prevent tearing or sharp edges on consumer packaging.
Most popular corner radius sizes for labels
Not sure which size is right for your application? Intertronix's label specialists can recommend the best corner radius based on your surface material, label substrate, and end-use environment.
1/8"
3.175mm — most popular for product labels
1/4"
6.35mm — popular for shelf & retail labels
1/16"
1.588mm — industrial & security labels
1/2"
12.7mm — cosmetic & packaging labels
Corner radius quick-reference table
All standard corner radius values available at Intertronix, with fractional, decimal, and metric equivalents:
| Fraction |
Decimal (in) |
Metric (mm) |
Common use |
| 1/64" | 0.0156" | 0.397mm | Near-sharp corners, precision labels |
| 1/32" | 0.0313" | 0.794mm | Minimal rounding, electronics labels |
| 3/64" | 0.0469" | 1.191mm | Fine detail labels |
| 1/16" | 0.0625" | 1.588mm | Industrial & asset tags |
| 3/32" | 0.0938" | 2.381mm | Security & tamper-evident labels |
| 1/8" | 0.125" | 3.175mm | Product labels (most popular) |
| 3/16" | 0.1875" | 4.763mm | Shipping & compliance labels |
| 1/4" | 0.25" | 6.35mm | Retail shelf labels |
| 5/16" | 0.3125" | 7.938mm | Packaging & promotional labels |
| 3/8" | 0.375" | 9.525mm | Beverage & bottle labels |
| 7/16" | 0.4375" | 11.11mm | Canister & tube labels |
| 1/2" | 0.5" | 12.7mm | Cosmetic & premium packaging |
| 9/16" | 0.5625" | 14.29mm | Large format labels |
| 5/8" | 0.625" | 15.88mm | Jar & container labels |
| 3/4" | 0.75" | 19.05mm | Large format & display labels |
| 7/8" | 0.875" | 22.23mm | Oversized label corners |
| 1" | 1.0" | 25.4mm | Fully rounded / pill-shaped labels |
How to read the corner radius chart
Each cell in the Intertronix corner radius chart displays three values for the same radius measurement:
- Fractional inch — e.g., 3/16" (the standard specification used when placing a label order)
- Decimal inch — e.g., 0.1875" (for use in Adobe Illustrator, Canva, CorelDRAW, or any vector design tool)
- Millimeters — e.g., 4.763mm (for metric design workflows and international production specifications)
The visual representation in each cell shows the actual corner shape at scale, so you can select by sight before confirming by dimension.
Frequently asked questions about label corner radius
What corner radius should I use for product labels?
For most product labels, a corner radius of 1/8" (3.175mm) provides the best balance of aesthetics and durability. It softens sharp corners to prevent edge lifting while maintaining a clean, professional look. For cosmetic or premium packaging, 1/4" (6.35mm) or larger creates a softer, more modern appearance.
What is the smallest corner radius available for labels?
The smallest standard corner radius for labels is 1/64" (0.0156" or 0.397mm), which is nearly indistinguishable from a sharp corner. This is commonly used when a square-corner look is desired but full 90° corners need to be avoided for die-cutting purposes.
How do I convert corner radius from inches to millimeters?
To convert a corner radius from inches to millimeters, multiply the decimal inch value by 25.4. For example: 1/4" = 0.25" × 25.4 = 6.35mm. Intertronix's corner radius chart includes pre-calculated mm values for all standard label sizes from 1/64" to 1".
Do rounded corners make labels more durable?
Yes. Rounded corners significantly improve label durability because sharp corners are the most common point of edge lifting and peeling. Even a small radius of 1/16" to 1/8" can extend label adhesion life, especially on curved surfaces, bottles, and products that are frequently handled.
What corner radius is used for shipping labels?
Shipping and logistics labels typically use a 1/8" (3.175mm) corner radius as a standard. Some carriers and compliance labels specify a maximum of 3/16" (4.763mm). Always check carrier requirements before ordering custom shipping labels.
What is the difference between a die-cut label and a square-cut label?
A square-cut label is cut straight across with right-angle corners (0" radius). A die-cut label is cut to a custom shape — including custom corner radii — using a metal die. Die-cut labels can have any corner radius from 1/64" to 1" and are ideal for premium, tamper-evident, and security label applications.
Ready to order custom labels with the right corner radius?
Intertronix produces tamper evident, security, and custom labels in every standard corner radius — from 1/64" to 1". Made to order in the USA. Ships worldwide.
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