A day of email replies totaling 1,200 words takes about 23.1 minutes to type at 52 words per minute, the phone keyboard speed in the Ruan study.

Checked against its source on October 16, 2026

What it measures: Measures the time to type an example day of replies totaling 1,200 words at the phone keyboard rate in the study. The day is an illustration, not a measured average.
How it is calculated: 1200 / 52 = 23.1 minutes. The 1,200 words is an example day of about ten replies of 120 words each, not a measured figure.

Calculated from