Diamond Painting Sizes and Drill Counts Explained

Diamond Painting · 6 min read · November 12, 2026

Navigating diamond painting sizes can be confusing with all the numbers and measurements. This guide breaks down drill counts, canvas dimensions, and drill sizes to help you pick the perfect fit for your next project.

Diamond painting is a wonderfully relaxing hobby, but when you're choosing a kit or creating your own pattern, understanding the different sizes involved can be a bit confusing. From tiny drills to large canvases, knowing what the numbers mean will help you pick the perfect project.

Understanding Diamond Drills: Round vs. Square

Diamond drills are the tiny resin pieces you apply to your canvas. They come in two main shapes:

Round Drills: These are generally easier and faster to place, making them popular for beginners. They leave small gaps between drills, which can be less noticeable on smaller designs or abstract images.
Square Drills: These fit together edge-to-edge, creating a fuller, more complete mosaic look. They are often preferred for designs that require more detail and precision, as they leave no gaps.

Drill Sizes: 2.5 mm, 2.8 mm, and 2.0 mm

The size of individual drills is also important. The most common sizes you'll encounter are:

2.5 mm: This is a very common drill size, particularly for smaller designs and round drills.
2.8 mm: Another popular size, often used for both round and square drills, especially in larger kits.
2.0 mm: While less common, some specialized kits or custom designs might use smaller 2.0 mm drills for finer detail.

The size of your finished diamond painting in millimeters is directly related to the number of drills and the size of each drill. For example, if you have 100 drills across and they are 2.5 mm each, your design will be 250 mm (25 cm) wide.

Canvas Size vs. Drill Area

When you buy a diamond painting kit, the listed size usually refers to the overall canvas dimensions. However, it's important to remember that the actual drillable area (where you place the diamonds) will be slightly smaller than the canvas size. This is because there's usually a margin around the design for labels, color legends, and handling. Always check your kit's specifics, as these margins can vary.

Total Drills: To find the total number of drills in a design, you multiply the number of drills wide by the number of drills high.
Size in Millimeters: To calculate the size in millimeters, multiply the number of drills by the drill size (e.g., 100 drills x 2.5 mm/drill = 250 mm).

Choosing the Right Size for Your Project

The size of your diamond painting significantly impacts the final look, the time it takes, and the space you'll need to work. Here's what to consider:

Detail vs. Time:
Smaller sizes (e.g., 20x30 cm): Good for simple designs, quick projects, or beginners. Less detail will be visible, so they are best for less complex images or those with large color blocks.
Medium sizes (e.g., 40x50 cm): A good balance between detail and completion time. Suitable for many photos and moderately complex designs.
Larger sizes (e.g., 60x80 cm and up): Essential for capturing fine details, complex images, or turning a beloved photograph into a stunning piece of art. These projects will take significantly longer to complete and require more storage space while you work.
Picking a Size for a Photo: If you're turning a photo into a diamond painting pattern, consider the level of detail in the original image. A portrait with subtle shading will benefit from a larger canvas and more drills to capture those nuances. A simpler landscape or cartoon might look great on a smaller canvas.
Space Needed: Remember that larger canvases require more workspace and a dedicated area where they won't be disturbed during the crafting process.

Using the Diamond Painting Size Calculator

To help you plan your diamond painting projects, Stitchpatt offers a free Diamond Painting Size Calculator. You can use it to convert drills to size or size to drills. Simply input your desired dimensions or drill counts, and it will help you understand the scale of your project, taking into account common drill sizes like 2.5 mm, 2.8 mm, and 2.0 mm. Remember that the printed canvas margin makes the drill area slightly smaller than the overall canvas, so always check your kit's specifics as sizes can vary.

Ready to transform your favorite photos into sparkling diamond paintings? Head over to the free Stitchpatt pattern maker to create your custom pattern, then use our free Diamond Painting Size Calculator to plan your project dimensions with ease. Happy drilling!

Try it yourself

Create a pattern from your photo, or open the diamond painting pattern maker. Plan your supplies with the Diamond Painting Size Calculator.