Using a Multimeter: What do the Symbols on a Multimeter mean?

Multimeters are very useful to measure a variety of electrical readings of different objects and components. In the following video, we show a few different ways we put a multimeter to work.

the usefulness of a multimeter

The challenge with using a multimeter is being able to read and understand the symbols on the multimeter dial. Below you’ll find a list of the typical symbols found on a multimeter along with a description of each.

List of Multimeter Symbols

  1. The “V” symbol, which stands for voltage, is typically a capital letter V with lines or arrows pointing in opposite directions. It is used to measure the potential difference, or voltage, between two points in an electrical circuit. Common items that are measured with this symbol include batteries, the voltage of a wall outlet, or the voltage drop across a resistor.
  2. The “A” symbol, which stands for current, is typically a capital letter A with lines or arrows pointing in the direction of current flow. It is used to measure the flow of electrical current in a circuit. Common items that are measured with this symbol include the current draw of an appliance, or to locate a short circuit in a wiring system.
  3. The “Ω” symbol, which stands for resistance, is a Greek letter omega. It is used to measure the resistance of an electrical component or circuit. Common items that are measured with this symbol include measuring the resistance of a resistor, or testing the continuity of a wire.
  4. The “Ω” with a diagonal line symbol, which also stands for resistance, is a Greek letter omega with a diagonal line through it. It is used to measure resistance with higher precision. Common items that are measured with this symbol include precision measurement of resistance of electronic components or industrial equipment.
  5. The “diode” symbol is typically a diode with arrows pointing in opposite directions. It is used to test if a diode is functioning properly in a circuit. Common items that are measured with this symbol include checking a diode’s forward voltage drop and reverse breakdown voltage of semiconductors.
  6. The “continuity” symbol is typically a diode symbol with a sound wave symbol. It is used to check the continuity of a circuit. This mode sends a small current through the circuit and alerts the user with a beep if the circuit is closed. Common items that are measured with this symbol include checking the continuity of a switch, relay, or any other component.
  7. The “hFE” symbol is typically a letter h with an subscript of F and E, meaning the current gain of a bipolar junction transistor. This function is only applicable when testing transistor and is used to check the current gain of a bipolar junction transistor.
  8. Lastly, the “CAP” symbol is typically a series of parallel lines representing a capacitor. It is used to measure capacitance in a circuit. Common items that are measured with this symbol include troubleshooting issues with a capacitor in a circuit, or measuring capacitance of capacitors in electronic devices.

It is important to note that different multimeters will have different symbols and settings, so be sure to consult the manual that came with your specific meter before using it. Additionally, before using a multimeter, it is important to understand the basic safety guidelines such as avoiding contact with high voltage and properly setting the multimeter’s range to match the value of the parameter you want to measure.

When taking measurements, it is important to be as precise as possible in order to get an accurate reading. Depending on the measurement you are taking, you may need to use a different range on the multimeter, or take multiple measurements to get an average value.