How to Measure Onscreen in Photoshop CS6
You can measure distances and objects within Photoshop CS6 many different ways. The rulers, used in combination with guides, are a good way to mark distances precisely so that you can create objects of a particular size. You can change the increments used for these measurements in Photoshop’s Preferences.
However, Photoshop also has a handy Ruler tool that you can use to lay measurement outlines in any direction. These lines tell you a great deal more than just the size of the object you’re measuring. You can also measure angles and determine the exact coordinates of an object.
When you use the Ruler tool, the Options bar offers a readout of information that includes the following values:
X, Y — the X and Y coordinates of the start of the line: For example, if you start at the 1-inch position on the horizontal ruler and the 3-inch position on the vertical ruler, the X and Y values on the Options bar are 1.0 and 3.0, respectively. (You select the increments for the X and Y values on the ruler in Photoshop’s Preferences.)
W, H — the horizontal (W) and vertical (H) distances traveled from the X and Y points: A 1-inch long, perfectly horizontal line drawn from the X,1 and Y,3 positions shows a W value of 1.0 and an H value of 0.0.
A: The angle of the first line or the angle between two lines.
L1: The total length of the line.
L2: The total length of the second line.
Straighten Layer: You can also straighten your image by using the Ruler tool. Simply drag along the horizontal axis you want to align to with the Ruler and then click the Straighten Layer button in the Options bar.
Clear: Press the Clear button to delete your current measurement.
How to measure an object in Photoshop CS6
To measure an object, follow these steps:
Select the Ruler tool.
It’s tucked away in the Tools panel with the Eyedropper. Press I, or Shift+I, to cycle between the Eyedropper, Color Sampler, Note, and Ruler tools until the Ruler tool appears.
Click at a starting location for the measuring line and then drag to the end location.
Hold down the Shift key while dragging to constrain the line to multiples of 45 degrees.
Release the mouse button to create the measurement line.
How to measure an angle in Photoshop CS6
You can measure an angle by drawing two lines and reading the angle between them from the Options bar. Just follow these steps:
Select the Ruler tool in the Tools panel.
It’s tucked away with the Eyedropper. Press I, or Shift+I, to cycle through the tools until the Ruler tool appears.
Click at a starting location for the first line and drag to the end location.
You can hold down the Shift key while you drag to constrain the line to multiples of 45 degrees.
Release the mouse button to create the first line.
Hold down the Alt key (the Option key on the Mac) and click the endpoint of the first line that you want to use to measure the angle.
Drag the second line and release the mouse button when you reach your desired length.
On the Options bar, read the angle between the two lines (labeled A).
You can also see the length of each line.Credit: ©iStockphoto.com/vincevoigt Image #3215897