Summarize the following:
Most digital multimeters use a symbol similar to |( to signify capacitance. Move the dial to that symbol. If several symbols share that spot on the dial, you may need to press a button to cycle between them until the capacitance symbol appears on the screen. If your tool has several capacitor settings, choose the range that fits your best guess for the capacitor's correct value. (You can read the capacitor's label to get a rough idea). If there is only one capacitor setting, your multimeter can automatically detect the range. If your multimeter has a REL button, press it while the test leads are separated. This will zero out the capacitance of the test leads themselves, to avoid interfering with the measurement. This is only necessary if measuring small capacitors. On some models, this mode disables auto-ranging. Note that electrolytic capacitors (most commonly shaped like cans) are polarized, so identify the positive and negative terminals before you connect the multimeter's leads. This may not matter much for your test, but you'll certainly need to know this before using the capacitor in a circuit. Look for any of the following: A + or - next to a terminal. If one pin is longer than the other, the long pin is the positive terminal. A colored stripe next to a terminal is an unreliable marker, since different types of capacitor use different standards. The multimeter will send out a current to charge the capacitor, measure the voltage, then use the voltage to calculate the capacitance. This process can take several seconds, and the buttons and display screen may be slow to respond until it's finished. An "OL" or "overload" reading means the capacitance is too high for the multimeter to measure. Set the multimeter to a higher range if possible. This result can also mean the capacitor has shorted. An auto-ranging multimeter will test the lowest range first, then increase if it hits an overload. You may see "OL" appear on the screen multiple times before you see the final result.
Set the multimeter to measure capacitance. Activate REL mode if present. Connect the leads to the capacitor's terminals. Wait for the result.