Accuracy is a score that represents the number of errors made.

Accuracy percentage is the ratio of keys typed correctly to all keys typed. The higher the percentage, the fewer errors you have made. 100% means no mistakes.

Accuracy is calculated using the standard word length. For each word with an error you get a five keystroke penalty, regardless of the number of errors in the word.

To develop fluent typing, you should try to reach at least 90% accuracy at the end of each lesson. Goals used are 90% (easy), 94% (intermediary) and 98% (advanced).