Screen Calibration

Step 1: Measure Your Screen

First, we need to know the size of your monitor.

If you know your diagonal monitor size, enter it in the box below.

Diagonal monitor size (inches):

If not, please find one of the following objects to help with the measuring process before continuing.

Select the physical object you will use:
CD or DVD
credit or debit card

Place your chosen object against your screen and move the slider until the image is the same size as the object.

Your diagonal monitor size is:

???

Once you are finished, continue to Step 2.

Step 2: Adjust Your Brightness/Contrast

Please take the time to adjust your monitor's brightness and contrast settings until you can distinguish the 12 boxes below and the black and white are true. Continue to Step 3 when you are satisfied with your adjustments.

For Windows users:
: Go to Start > Control Panel and look for your graphics card's control panel (ex. NVIDIA) or there may be buttons located directly on your monitor/laptop to adjust the brightness and contrast

For Mac users:

Use these keyboard shortcuts:

Decrease Brightness: F1
Increase Brightness: F2
Decrease Contrast: Ctrl-Option-Command-,
Increase Constrast: Ctrl-Option-Command-.

Step 3: Start the Experiment

Almost there! Before you begin, please do the following tasks and check them off the list:

Increase your browser window to the largest size possible, preferably by enabling the "full screen" or "presentation" mode of your browser. (It is typically F11 for Windows or Command-Shift-F for Mac. You can also check your browser's menu bar.)

Sit at arm's length from your monitor for the duration of the task

Click the Start button when you are ready.