2×2 Size in CM – Convert Inches to Centimeters
Need to know the 2×2 photo size in centimeters? The exact answer is 5.08×5.08 cm (51×51 mm). This page explains the conversion, shows a full comparison table, and lets you resize any photo to exactly 2×2 inches (5.08 cm) for free — no upload, no account needed.
Quick Answer
2×2 inches = 5.08 × 5.08 centimeters = 51 × 51 mm = 600 × 600 px
Formula: 2 inches × 2.54 = 5.08 cm
Conversion Table
| Format | CM | MM | Pixels (300 DPI) |
|---|---|---|---|
| 2×2 inches (US passport) | 5.08 × 5.08 cm | 51 × 51 mm | 600 × 600 px |
| 35×45 mm (UK / EU) | 3.5 × 4.5 cm | 35 × 45 mm | 413 × 531 px |
| 50×70 mm (Canada) | 5.0 × 7.0 cm | 50 × 70 mm | 591 × 827 px |
Comparison rows (35×45 mm, 50×70 mm) are shown for reference only.
Why is 2×2 Measured in Inches?
The United States uses the imperial system, so official photo requirements are stated in inches rather than centimeters. The US Department of State, USCIS, and other agencies all specify passport and ID photos as 2×2 inches.
Most other countries use the metric system and specify photos in millimeters or centimeters — for example, the UK and EU standard is 35×45 mm (3.5×4.5 cm). If you need to provide measurements in cm, simply convert: 2 inches = 5.08 cm.
When submitting a photo for a US government document, always use the 2×2 inch (5.08 cm) specification. Many online forms accept the photo file directly; for printed photos, request a 2×2 inch print — not a 5 cm or 5.08 cm print — to avoid confusion at the print counter.
How to Resize Your Photo to 2×2 (5.08 cm)
- Upload your photo using the tool below. Works with JPEG, PNG, and WebP. For best results, use a well-lit photo taken in front of a plain white or light-colored background.
- Adjust the crop. Center your face in the square frame. For passport or visa photos, your head should fill 70–80% of the frame height (chin to crown).
- Download the finished file. The tool exports a 600×600 px JPEG — the correct pixel count for a 2×2 inch (5.08×5.08 cm) photo at 300 DPI. Print it at any photo lab as a 2×2 inch print.
Frequently Asked Questions
What is 2x2 in cm?
2×2 inches equals 5.08×5.08 centimeters. One inch is exactly 2.54 cm, so 2 inches × 2.54 = 5.08 cm. The full measurement is 5.08 cm wide by 5.08 cm tall, making it a perfect square.
What is 2x2 pic size in centimeters?
A 2×2 pic measures 5.08×5.08 centimeters (or 5.08 cm × 5.08 cm). In millimeters that is 51×51 mm, and at 300 DPI print resolution the digital size is 600×600 pixels. This is the standard size for US passport photos and many other official documents.
Is 5x5 cm the same as 2x2 inches?
No — 5×5 cm (50×50 mm) is close but not exactly the same as 2×2 inches. The precise conversion is 2 inches = 5.08 cm, so 2×2 inches = 5.08×5.08 cm. A photo printed at exactly 5×5 cm would be about 1.6% smaller than the required 2×2 inch size. Always use 5.08 cm for official documents.
What is 51x51 mm in cm?
51×51 mm equals 5.1×5.1 cm (dividing by 10). This is essentially the same as 2×2 inches (5.08×5.08 cm) — the 0.02 cm difference is due to rounding. Most print services and official systems accept 51×51 mm as equivalent to the 2×2 inch requirement.
What size is a passport photo in cm?
US passport photo size in cm is 5.08×5.08 cm (2×2 inches). For UK, EU, and many other countries, the standard passport photo size is 3.5×4.5 cm (35×45 mm). Indian passport photos are also 5.08×5.08 cm (51×51 mm). Always check the specific requirements of the country issuing your document.
How to convert inches to cm?
Multiply the number of inches by 2.54 to get centimeters. Example: 2 inches × 2.54 = 5.08 cm. For the reverse, divide centimeters by 2.54 to get inches. Example: 5.08 cm ÷ 2.54 = 2 inches. This conversion factor (1 inch = 2.54 cm) is an exact, internationally defined standard.
What is 2 by 2 photo size in cm and mm?
A 2 by 2 photo is 5.08 cm × 5.08 cm, which is 50.8 mm × 50.8 mm (often rounded to 51×51 mm). At 300 DPI print quality, the digital resolution is 600×600 pixels. This square format is used for US passports, DV Lottery entries, green card applications, USCIS forms, and many other US government documents.