The voltage value corresponding to the last word on the lowest voltage range of a digital multimeter is called resolution, which reflects the sensitivity of the instrument. The resolution of digital instruments increases with the number of displayed digits. The highest resolution index that a digital multimeter with different digits can achieve is different, such as a 3 1/2 digit multimeter of 100 μ V.

The resolution index of a digital multimeter can also be displayed using resolution. Resolution refers to the percentage of the minimum number (excluding zero) that the instrument can display to the maximum number. For example, a typical {{0}}/2 digit multimeter can display a minimum number of 1 and a maximum number of 1999, resulting in a resolution of 1/1999 ≈ 0.05 percent .