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Convert inches to px – US print, photo sizes, ad specs
Pixels = inches × DPI. Letter at 300 DPI = 2,550×3,300px. Facebook ads, Amazon printables, photo prints — get the right canvas size instantly.
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When do you need to convert inches to pixels?
US paper sizes and print specifications use inches. To prepare digital artwork, convert to pixels: pixels = inches × DPI.
US Letter paper (8.5 × 11″) at 300 DPI = 2,550 × 3,300 pixels. A 4 × 6″ photo print at 300 DPI = 1,200 × 1,800 pixels.
This conversion is essential for preparing images for US print shops, setting up document templates, and calculating required image resolution.
All calculations run locally in your browser — nothing is sent to any server.
How to use the converter?
2. Read the result
The conversion result appears instantly in the field next to it – no clicking required.3. Copy or reverse
Click Copy result or use the Reverse button to convert in the opposite direction.
When is this converter useful?
US print standards — Letter, Legal, and Tabloid
US commercial printing is specified in inches. Letter (8.5 × 11in) at 300 DPI = 2,550 × 3,300px. Legal (8.5 × 14in) = 2,550 × 4,200px. Tabloid (11 × 17in) = 3,300 × 5,100px. When a print shop requests a 300 DPI Letter-size file, this is the canvas size you need to deliver.Social media ad specifications
Social media platforms specify ad sizes in pixels, but ad templates and brand guidelines often use inches. A Facebook Open Graph image spec is 1,200 × 628px — at 72 DPI that is 16.67 × 8.72 inches. Instagram feed ads are 1080 × 1080px = 15 × 15in at 72 DPI. This converter helps verify that your print-originated artwork matches social ad pixel requirements.Photo prints and Etsy/Amazon printables
Photo print sizes are specified in inches in the US. A 4 × 6in print at 300 DPI requires a 1,200 × 1,800px image. For Etsy digital download products, common printable sizes include 5 × 7in (1,500 × 2,100px), 8 × 10in (2,400 × 3,000px), and 11 × 14in (3,300 × 4,200px) — all at 300 DPI for quality prints.Banner printing and large format
Trade show banners and retractable banners use inches for sizing. A standard retractable banner (33 × 80in) at 150 DPI = 4,950 × 12,000px. Vinyl banners printed at 72 DPI: a 6 × 2ft banner (72 × 24in) = 5,184 × 1,728px. Large format typically uses 72–150 DPI since they are viewed from a distance.
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What makes this converter different?
Complete privacy
All calculations run locally in your browser. No data is sent to any server.Real-time results
The result updates instantly as you type – no need to click any button.Bidirectional conversion
The Reverse button lets you convert in both directions with one click.Reference table
A ready-made table with commonly converted values and contextual descriptions.
How does inches to pixel conversion work?
The formula is simply: pixels = inches × DPI. No additional conversion factor needed since DPI is already dots per inch.
At 300 DPI: 1 inch = 300 pixels. At 72 DPI: 1 inch = 72 pixels.
To find required DPI: DPI = pixels / inches. A 4,000 px image printed at 8″ wide = 500 DPI.
Practical tips
- Photo prints: 4×6″ at 300 DPI = 1,200×1,800 px (2.16 MP minimum).
- US Letter: 8.5×11″ at 300 DPI = 2,550×3,300 px.
- US Tabloid: 11×17″ at 300 DPI = 3,300×5,100 px.
- Retina display: effective 2× DPI. A “72 DPI” screen image actually needs 144 px per inch on Retina.
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Common print sizes at 300 DPI
| Print size | Inches | Pixels (300 DPI) |
|---|---|---|
| Wallet | 2.5 × 3.5″ | 750 × 1,050 |
| 4×6 photo | 4 × 6″ | 1,200 × 1,800 |
| 8×10 photo | 8 × 10″ | 2,400 × 3,000 |
| US Letter | 8.5 × 11″ | 2,550 × 3,300 |
| Poster (24×36) | 24 × 36″ | 7,200 × 10,800 |
Convert other units to Pixels
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Frequently asked questions
How many pixels is 1 inch at 300 DPI?
1 inch at 300 DPI = 300 pixels. The formula is: pixels = inches × DPI. At 72 DPI: 1in = 72px. At 96 DPI: 1in = 96px (this is the CSS standard). At 150 DPI: 1in = 150px. At 300 DPI: 1in = 300px.
What size photo do I need for an 8×10 print?
8 × 10in at 300 DPI = 2,400 × 3,000 pixels = 7.2 megapixels minimum. At 150 DPI (acceptable for casual prints): 1,200 × 1,500px. Most modern smartphones produce 12–50 MP images, which is well above the minimum for 8×10 prints at 300 DPI.
What DPI is my screen?
Common screen DPI: 96 PPI (Windows default, 24in 1080p monitors), 72–109 PPI (older Macs and monitors), 163 PPI (27in 4K), 218 PPI (iPhone 11), 460 PPI (iPhone 15 Pro). Note: CSS always treats 1in = 96px regardless of the physical screen DPI.
What pixel size do I need for a Facebook ad?
Facebook feed image ads: 1,200 × 628px (1.91:1 ratio). Facebook square post: 1,080 × 1,080px. Facebook Story: 1,080 × 1,920px. In inches at 72 DPI: 1,200 × 628px = 16.67 × 8.72in. Use this converter to check if your print artwork in inches translates to the required pixel dimensions.
What are the standard US photo print sizes in pixels?
At 300 DPI: 4×6in = 1,200×1,800px, 5×7in = 1,500×2,100px, 8×10in = 2,400×3,000px, 11×14in = 3,300×4,200px, 16×20in = 4,800×6,000px, 20×30in = 6,000×9,000px.
How do I calculate the required image size for a poster?
Determine the poster size in inches and multiply by your target DPI. A 24 × 36in poster at 150 DPI = 3,600 × 5,400px. At 300 DPI = 7,200 × 10,800px. For posters viewed from more than 3 feet away, 150 DPI is usually sufficient and produces a much smaller file size.
What is 1 inch in CSS pixels?
In CSS, 1 inch is always exactly 96 CSS pixels, regardless of the physical screen resolution. This is defined in the CSS specification. So width: 1in in CSS equals width: 96px. This means CSS inch and print inch only align at 96 DPI screens.
Are calculations done locally?
Yes. All calculations run in your browser. No data is sent to any server.
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