Letters Per Minute Calculator

Formula

To calculate the Letters Per Minute (LPM):

\[ LPM = \frac{W \times AWL}{M} \]

Where:

\(LPM\) is the letters per minute
\(W\) is the total number of words
\(AWL\) is the average word length in letters
\(M\) is the time in minutes

What is Letters Per Minute?

Letters per minute (LPM) is a measure of typing or reading speed. It represents the number of letters that can be typed or read within one minute. This metric is useful for assessing the efficiency of typists, the difficulty of texts based on their language complexity, and for setting goals for improvement in typing or reading skills.

Example Calculation 1

Let's assume the following values:

Total Number of Words (W) = 200
Average Word Length (AWL) = 5 letters
Time (M) = 2 minutes

Using the formula:

\[ LPM = \frac{200 \times 5}{2} = 500 \text{ LPM} \]

The Letters Per Minute is 500 LPM.

Example Calculation 2

Let's assume the following values:

Total Number of Words (W) = 150
Average Word Length (AWL) = 4 letters
Time (M) = 3 minutes

Using the formula:

\[ LPM = \frac{150 \times 4}{3} = 200 \text{ LPM} \]

The Letters Per Minute is 200 LPM.