Feet to CM : convert feet (ft) to centimeters (cm), or centimeters to feet. For my Mac’s settings, (1800 pixels / 11.875 inches) * 2 = 303 ppi, and entering that in Screen Resolution lets Print Size show the Photoshop ruler at an on-screen size that matches a real ruler.Īlso important: For both Actual Size and Print Size to work properly, the document physical dimensions in inches/cm and the PPI resolution (you set both in Image > Image Size) must match the final reproduction dimensions and resolution. MM to CM : convert millimeters (mm) to centimeters (cm), or centimeters to millimeters. For a Retina/HiDPI display, take the pixel width from the UI scaling selected in Displays, as gener7 showed, and then after doing the calculation, double the result to compensate for 2x pixel density so that you get the correct number for Screen Resolution. Important: It gets tricky on a Retina (macOS) or HiDPI (Windows) display, which use 2x pixel density.
If you don’t know the display resolution, you can work it out yourself using the method gener7 showed earlier in this thread. If Actual Size is not accurate, use View > Print Size after manually calibrating it by entering your screen resolution in Preferences / Units and Rulers / Screen Resolution.
The largest ticks on a ruler represent a full inch, and the distance between each large tick is 1. It does match up perfectly when your eye is directly above each marker.)Īctual Size might not be accurate with some computer and graphics hardware combinations. Reading a ruler starts with understanding what all the ticks mean. The actual dimensions of Standard USA Brick include a width of 7.625 (194 mm), height of 2.25 (57 mm), and depth of 3.625 (92 mm). (It may look slightly off in the photo, but that is due to close up parallax. And you don’t have to know what any of the numbers are, it just works. What is the area of a circle with a DIAMETER of 2 inches (radius of 1 inches) How big is a 2 inch circle Diameter. When Actual Size is used, Photoshop gets the display pixel density from the Mac hardware, and uses that to correct the display magnification, so the Photoshop ruler matches the real ruler that is against the screen. The screen shot posted earlier by gener7 is from a Mac.īelow is the ruler in Photoshop on my MacBook Pro after choosing View > Actual Size in Photoshop. The modular brick is the most common standard size in the U.S., designed to include mortar joints to fit neatly into a grid of 4 x 8.
For instance, 38 × 89 mm (1-1/2 × 3-1/2 in) material is referred to nominally as 2 × 4 lumber. Lumber can be referred to by its nominal size in inches, which means the actual size rounded up to the nearest inch or by its actual size in millimeters. Click the 'inch' button to display the real-world size of 240 inches (20 foot). The Actual Size command works automatically on a Mac.Īll of the replies I posted are from my Mac. Dimension lumber is solid sawn wood that is less than 89 mm (3.5 in) in thickness. This calculator does the reverse of the one above and converts from Scale Size to Real Size.