2 inch photo size:

2 inch photo size:

38mmx51mm

The size of the photo is in inches, 1 inches =2.54cm, and usually x inch is the length of the inch of the long side of the photo. such as: 5 inch is the picture width is 2.54x5=12.7cm;12 inch is the photograph width is 2.54x12=30.5cm.

Small one inch 2.2x3.2 (cm);
Freshman inch 3.3x4.8 (cm)
1.5x2 inch: Two inch 3.5x4.9 (cm);
Small two inch 3.5x4.5 (cm);
Sophomore inch 3.5x5.3 (cm)
1 inch 1R 2.6x3.7 (cm)
2 inch 2R 6.3x8.9 (cm)
5x3.5 (5 inch 3R) 12.70x8.89 (cm)
6x4 (6 inch 4R) 15.24x10.16 (cm)
7X5 (7 inch 5R) 17.78x12.70 (cm)
8X6 (8 inch 6R) 20.32x15.24 (cm)
10x8 (10 inch 8R) 25.40x20.32 (cm)
12x10 (12 inches) 30.48x25.40 (cm)
14x12 (14 inches) 35.56x30.48 (cm)
16x12 (16 inches) 40.64x30.48 (cm)
18x12 (18 inches) 45.72x30.48 (cm)
18x14 (18 inches) 45.72x35.56 (cm)
20x16 (20 inches) 50.80x40.64 (cm)
20x18 (20 inches) 50.80x45.72 (cm)
24x20 (24 inches) 60.96x50.80 (cm)
30x24 (30 inches) 76.20x60.96 (cm)
32x24 (32 inches) 81.28x60.96 (cm)
36x24 (36 inches) 91.44x60.96 (cm)
40x32 (40 inches) 101.6x81.28 (cm)
42x32 (42 inches) 106.6x81.28 (cm)
48x32 (48 inches) 121.9x81.28 (cm)
(Note one inch phase: such as passport, visa application, etc., to grade degree certificate more used is a freshman, 48 mm x33 mm. and the identity card, physical examination table, and so on a small one-inch 32 mm x22 mm, the second-generation ID card (26mmx32mm), ordinary one-inch phase is 25mmx35mm. Photo standard for Passport travel documents size: 48mmx33mm, head width is 21mm~24mm, head length is 28mm~33mm. )
Various document sizes: Table 2
1. Identity card (22mmx32mm) second-generation identity card (26mmx32mm)
2. Driver's license (22mmx32mm)
3. Black and white small one inch (22mmx32mm)
4. Color small One inch (27mmx38mm)
5. Color big inch (40mmx55mm)
6. General document photo (33mmx48mm)
7.1 inch (25mmx35mm)
8.2 inch (35mmx49mm)
9.3 inch (35mmx52mm)
10. Hong Kong and Macao Pass (33mmx48mm)
11. Visa to the United States (50mmx50mm)
12. Japan Visa (45mmx45mm)
13. Sophomore inch (35mmx45mm)
14. Passport (33mmx48mm)
15. Student Photo (33mmx48mm)
16. Driver's license (21mmx26mm)
17. Photos (60mmx91mm)
To ensure that the printing effect is satisfactory, you can refer to the following table.
Print size (inches) file volume (approx.) requires minimum resolution photo corresponding size
(1 inch/2 inch) 150-200kb 640x480 (300,000) 2.5x3.5 cm/5.3x3.5cm
(5x3.5 inch) 3R 500-550kb 1280x960 (1.2 million) 12.70x8.89 cm
(6x4 inch) 4R 600-650kb 1280x1024 (1.3 million) 15.24x10.16 cm
(7x5 inch) 5R 800-900kb 1600x1200 (2 million) 17.78x12.70 cm
(8x6 inch) 6R 1-1.2MB 1900x1280 (2.4 million) 20.32x15.24 cm
(10x8 inch) 8r-8f 1.3-1.5MB 2048x1536 (3 million) 25.40x20.32 cm
Print Photo Maximum size comparison
Data comparison table (inch) for maximum photo flushing of digital camera according to 150PPI calculation
5 million pixels effective 4915200, pixel 2560x1920. Washable photo size 17x13, diagonal 21 inch
4 million pixels effective 3871488, pixel 2272x1704. Washable photo size 15x11, diagonal 19 inch
3 million pixels effective 3145728, pixel 2048x1536. Washable photo size 14x10, diagonal 17 inch
2 million pixels effective 1920000, pixel 1600x1200. Washable photo size 11x8, diagonal 13 inch
1.3 million pixels effective 1228800, pixel 1280x960. Washable photo size 9x6, diagonal 11 inch
800,000 pixels effective 786432, pixel 1024x768. Washable photo size 7x5, diagonal 9 inch
500,000 pixels effective 480000, pixel 800x600. Washable photo size 5x4, diagonal 7 inch
300,000 pixels effective 307200, pixel 640x480. Washable photo size 4x3, diagonal 5 inch
As can be seen from the table above:
5-inch photo (3X5) with 800x600 resolution
6-inch photo (4X6) with 1024x768 resolution
7-inch photo (5X7) with 1024x768 resolution
8-inch photo (6X9) with 1280x960 resolution
Supplementary digital camera can print photo size comparison chart to achieve a satisfactory digital enlarging effect:
Photo Spec (inch) (cm) (pixels) digital camera type file size
1 inch 2.5*3.5cm 413*295
ID card big picture 3.3*2.2 390*260
2 inch 3.5*5.3cm 626*413 150-200k
Small 2 inch (passport) 4.8*3.3cm 567*390
5 inch 5x3.5 12.7*8.9 1200x840 above 1 million pixels 800-900k
6 inch 6x4 15.2*10.2 1440x960 above 1.3 million pixels 1-1.2m
7 inch 7x5 17.8*12.7 1680x1200 above 2 million pixels
8 inch 8x6 20.3*15.2 1920x1440 above 3 million pixels 1.3-1.5m
10 inch 10x8 25.4*20.3 2400x1920 above 4 million pixels
12 inch 12x10 30.5*20.3 2500x2000 above 5 million pixels
15 inch 15x10 38.1*25.4 3000x2000 6 million pixels
In addition, the digital film regardless of the pixel is millions of, only look at the long edge of the number of pixels, 1200 out of 5 inches, 1400 out of 6 inches, 17 00 out of 7 inches, and so on ....
1 inch (refers to inches) =2.54cm we say X-inch is the long side of the photograph,
Like 5 inches is the picture long 2.54x5=12.7cm
12 inches is 2.54x12=30.5cm,
8x12 is long edge 2.54x12=30.5cm, short side 2.54x8=20.3cm3r finger paper,
3R for 89mm,5r to 127MM
Usually 3R refers to 3*5 is 5 inch 5R refers to 5*7 is 7 inch
R means the rectangular type (English is rectangle), all with the shortest side to calculate.

5x3.5 (5 inch 3R) 12.70x8.89 (cm)
6x4 (6 inch 4R) 15.24x10.16 (cm)
7X5 (7 inch 5R) 17.78x12.70 (cm)
8X6 (8 inch 6R) 20.32x15.24 (cm)
10x8 (10 inch 8R) 25.40x20.32 (cm)
12x10 (12 inches) 30.48x25.40 (cm)
14x12 (14 inches) 35.56x30.48 (cm)
16x12 (16 inches) 40.64x30.48 (cm)
18x12 (18 inches) 45.72x30.48 (cm)
18x14 (18 inches) 45.72x35.56 (cm)
20x16 (20 inches) 50.80x40.64 (cm)
20x18 (20 inches) 50.80x45.72 (cm)
24x20 (24 inches) 60.96x50.80 (cm)
30x24 (30 inches) 76.20x60.96 (cm)
32x24 (32 inches) 81.28x60.96 (cm)
36x24 (36 inches) 91.44x60.96 (cm)
40x32 (40 inches) 101.6x81.28 (cm)
42x32 (42 inches) 106.6x81.28 (cm)
48x32 (48 inches) 121.9x81.28 (cm)
(Note one inch phase: such as passport, visa application, etc., to grade degree certificate more used is a freshman, 48 mm x33 mm. and the identity card, physical examination table, and so on a small one-inch 32 mm x22 mm, the second-generation ID card (26mmx32mm), ordinary one-inch phase is 25mmx35mm. Photo standard for Passport travel documents size: 48mmx33mm, head width is 21mm~24mm, head length is 28mm~33mm. )
Various document sizes:
1x1.5 inch: One inch 2.5x3.5 (cm); Small one inch 2.2x3.2 (cm); Freshman inch 3.3x4.8 (cm)
1.5x2 inch: Two inch 3.5x4.9 (cm); Small two inch 3.5x4.5 (cm); Sophomore inch 3.5x5.3 (cm)
1. Identity card (22mmx32mm) second-generation identity card (26mmx32mm)
2. Driver's license (22mmx32mm)
3. Black and white small one inch (22mmx32mm)
4. Color small One inch (27mmx38mm)
5. Color big inch (40mmx55mm)
6. General document photo (33mmx48mm)
7.1 inch (25mmx35mm)
8.2 inch (35mmx49mm)
9.3 inch (35mmx52mm)
10. Hong Kong and Macao Pass (33mmx48mm)
11. Visa to the United States (50mmx50mm)
12. Japan Visa (45mmx45mm)
13. Sophomore inch (35mmx45mm)
14. Passport (33mmx48mm)
15. Student Photo (33mmx48mm)
16. Driver's license (21mmx26mm)
17. Photos (60mmx91mm)

2 inch photo size: