Proficiency Calculator: How Long It Takes to Be Great

Enter the estimated number of hours you spend each week on the categories below. Remember, there are 168 hours in a week.

How many hours per week do you sleep?(Required)

8 hours per night is 56 hours per week

Please enter a number from 0 to 168.

How many hours per week do you work?(Required)

8 hours per day M-F is 40 hours per week

Please enter a number from 0 to 168.

How many hours per week do you spend with your kid(s), spouse, family, or friends?(Required)

2 hours per day + 6 hours per day on the weekends = 22 hours per week

Please enter a number from 0 to 168.

How many hours per week do you spend preparing to commute or commuting?(Required)

2 hours per day = 14 hours per week

Please enter a number from 0 to 168.

How many hours per week do you spend preparing food or eating meals?(Required)

2 hours per day = 14 hours per week

Please enter a number from 0 to 168.

How many hours per week do you spend on leisure and entertainment (social media, games, screen time, etc.)?(Required)

1 hour per day = 7 hours per week

Please enter a number from 0 to 168.

Remaining Hours Per Week to Practice and Become Proficient

Estimated Number of Months to Become Great at One Thing

Great = 550 hours of practice

Estimated Number of Years to Become World Class at One Thing

World Class = 5,000 hours of practice (double this number for the 10,000 hour rule)