T Shirt Design Size: Pixel and Inch Dimensions That Print Sharp

The right t shirt design size for a full front print is a file of 4500 x 5400 pixels at 300 dpi, printed up to 12 x 16 inches on the shirt. Those two numbers solve most sizing questions. This guide adds the pixel math for front, back and small chest designs, how wide to go on each shirt size, and how to set up the file in common apps, so the file you upload to our design your own shirt page prints sharp the first time.

What size should a t shirt design be?

A t shirt design should be made at 4500 x 5400 pixels and 300 dpi, saved as a transparent PNG. That file holds more detail than the largest adult print area of 12 x 16 inches needs, so it stays crisp when placed at any smaller size.

People often mix up two different sizes: the size of the file and the size of the print. The file is measured in pixels and should be large. The print is measured in inches and should fit the shirt and the person wearing it. You make the file once, big, and then decide the print size in the designer by dragging the corners. A small file cannot be stretched into a big sharp print, but a big file can always be printed small.

What are the pixel dimensions for each t shirt print placement?

The pixel dimensions for each t shirt placement come from multiplying the print size in inches by 300. A full front at 12 x 16 inches needs 3,600 x 4,800 pixels, a standard front at 10 x 12 inches needs 3,000 x 3,600, and a small chest design about 4 inches wide needs roughly 1200 pixels across.

Why make the master file 4500 x 5400 if the biggest print is 3,600 x 4,800? Headroom. The extra pixels mean you can crop, rotate or resize later without dropping below 300 dpi. Placed at the full 12 inch width, a 4500 x 5400 file prints at about 14.4 inches tall and roughly 375 dpi, which is more than enough (illustrative math).

What does 300 dpi mean for a t shirt design?

For a t shirt design, 300 dpi means 300 pixels of image for every inch of printed shirt. At that density, edges and small details look smooth from normal viewing distance. The dpi number in a file's settings means little by itself; what matters is how many pixels you have across the printed width.

Here is the quick way to check any file. Divide its width in pixels by the print width in inches. A 2400 pixel wide graphic printed 12 inches wide gives 200 pixels per inch, which looks a bit soft on lettering. The same file printed 8 inches wide gives 300, which is sharp. Below about 150 pixels per inch at print size, most people can see blur or blocky edges, especially on text. If your math comes out low, either find a larger original or print smaller. You can test it by dragging the corners in the shirt designer and watching the preview. Photos follow the same rule; our guide on putting a picture on a shirt shows typical phone photo sizes.

How wide should a t shirt design be for each shirt size?

A t shirt design for a full front usually looks right at about 10 to 11 inches wide on adult small and medium shirts and 11 to 12 inches on large and up. If one design prints across mixed sizes, pick a width that suits the smallest shirt in the group.

These are starting points, not rules:

If you are ordering for a group with mixed sizes, set the width for the smallest shirt first, then check each size in the live preview before you order. A design that looks balanced on a small usually looks fine on a large.

How far below the collar should a t shirt design go?

On most adult shirts, a front t shirt design looks best when its top edge sits about 3 inches below the collar seam, roughly three finger widths. Lower than about 4 inches and the design starts to land on the stomach, which makes even a well sized graphic look like it slid down.

Square or round designs can sit a little higher than tall ones. Wide text banners look best near the top of the chest area. On the back, the same idea applies: start a few inches below the collar, so the design clears the seam when the shirt hangs naturally. For more on where each placement lands on the body, see our print placement guide.

How big should a small chest t shirt design be?

A small chest style t shirt design is usually about 3.5 to 4 inches wide, which needs about 1050 to 1200 pixels at 300 dpi. Keep it simple: a short word, an icon or a small mark. Fine text under about a quarter inch tall becomes hard to read at that size.

In the designer, you can get close to this look by shrinking your artwork on the front and placing it high on the chest; if you want a precise chest placement, mention it when you email us for a file check. Pair it with a large back print for a classic small front, big back layout. Make sure the art is still a clean, high resolution file even though it prints small. A small, blurry file printed small stays blurry.

How do you set up a t shirt design file in Canva, Photoshop or Procreate?

To set up a t shirt design file, create a new document at 4500 x 5400 pixels, set the resolution to 300 dpi if the app asks, hide or delete any background layer, and export as PNG with transparency. The same four steps work in Canva, Photoshop, Procreate and most other design apps.

1. Canva: Create design, Custom size, 4500 x 5400 px. When downloading, choose PNG and tick transparent background (some plans require an upgrade for this).
2. Photoshop: New document, 4500 x 5400 pixels, 300 pixels per inch, background contents transparent. Export as PNG.
3. Procreate: New document with custom size 4500 x 5400 px at 300 dpi. Turn off the background color layer before sharing as PNG. Very large documents limit the number of layers on some iPads.
4. Any app: leave a small margin around the art inside the document and avoid placing important details at the very edge.

If your art comes from an image generator, it will likely be smaller than this size. Our guide to AI t shirt design covers upscaling it properly.

How do you size your design in our shirt designer?

In our shirt designer, you upload your file, then drag the corners to set the print size while the live preview shows it on the real shirt and color. The front print is included in the $25 price, with no minimum. You can add a back print too.

• Pick your shirt, color and size in the Design Your Own designer, and the preview updates as you resize the art.
• A back print uses the same full color process, up to the same 12 x 16 inch area.
• A real person checks every file before printing, including whether the pixels support the size you chose, and contacts you if it would print soft.
• Printed on Kornit DTG equipment in Hollywood, FL, shipped within 2 business days or picked up locally.

New to the tool? Our step by step guide to designing a shirt online covers the rest of the process. Or open the custom t shirt designer and size your file now.

Frequently asked questions

What is the standard t shirt design size in pixels?

The standard t shirt design size is 4500 x 5400 pixels at 300 dpi, saved as a transparent PNG. That file covers the largest adult print area of 12 x 16 inches with room to spare. If you only need the exact print area, 3,600 x 4,800 pixels equals 12 x 16 inches at 300 dpi.

What is the maximum print size on a t shirt?

The maximum print size on a t shirt in our designer is 12 x 16 inches. A back print can use the same 12 x 16 inch area. Most full front designs look best slightly smaller than the maximum on small sizes.

Is 150 dpi good enough for a t shirt design?

A t shirt design at 150 dpi at its printed size can look acceptable for photos and soft artwork, but text and sharp edges often look slightly blurry. Aim for 300 dpi at print size for clean results. If your file only reaches 150 dpi, print it smaller to raise the effective resolution.

Should the t shirt design size change for each shirt size?

Ideally, the t shirt design size changes a little with the shirt size: about 9 to 10 inches wide on adult small, 10 to 11 on medium, and 11 to 12 on large and up. When one design goes on a group of mixed sizes, choose the width that looks right on the smallest shirt.

Where can I check if my t shirt design size is right before printing?

You can check your t shirt design size at Imperial Custom Apparel in Hollywood, FL. Upload the file in the online designer to see it at full size on the real shirt, or email it for a free file check by a real person. Shirts start at $25 with no minimum and ship within 2 business days. Call (954) 280 0627.