# Contact Hour Formulas

 To calculate HOURS per WEEK: If your credit ratio is 3:2:2(3 credits, 2 lecture hours, 2 lab hours): Add lecture hours + lab hours = Total Contact Hours 2 + 2 = 4 Total Contact Hours Multiply total contact hours x 750 minutes (minimum) 4 x 750 = 3,000 Total Minutes Divide total minutes by # weeks in semester 3,000 / 15 = 200 Minutes per Week Divide minutes per week by 60 minutes per hour 200 / 60 = 3.33 Hours per Week If your credit ratio is 3:3:0(3 credits, 3 lecture hours, 0 lab hours): Add lecture hours + lab hours = Total Contact Hours 3 + 0 = 3 Total Contact Hours Multiply total contact hours x 750 minutes (minimum) 3 x 750 = 2,250 Total Minutes Divide total minutes by # weeks in semester 2,250 / 15 = 150 Minutes per Week Divide minutes per week by 60 minutes per hour 150 / 60 = 2.50 Hours per Week To calculate HOURS per DAY: If your credit ratio is 3:3:0(3 credits, 3 lecture hours, 0 lab hours): Add lecture hours + lab hours = Total Contact Hours 3 + 0 = 3 Total Contact Hours Multiply total contact hours x 750 minutes (minimum) 3 x 750 = 2,250 Total Minutes Divide total minutes by total # meet days (excludes holidays) 2,250 / 45 = 50 Total Minutes per Day Divide minutes per day by 60 minutes per hour 50 / 60 = 0.83 HOURS per DAY To see the formulas at work, refer to Contact Hour Calculator.