Hourio

Time card calculator: how many hours did you work?

To total a time card, take each day’s end time minus its start time, subtract unpaid breaks, and add the days together. Monday to Friday from 9:00 AM to 5:30 PM with a 30-minute unpaid lunch is 8.00 hours a day and 40.00 hours a week. At $20 an hour that is 40.00 h × $20.00 = $800.00, all regular time under the federal 40-hour rule, which starts overtime only after the 40th hour.

Enter the start, end and unpaid break for each day you worked. This hours calculator shows each day in decimal hours and the total for the week; add an hourly rate to see pay as well.

Optional. Leave it empty to see hours only.

Your week

An end time earlier than the start counts as the next day.

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sunday

Your pay for the week

How is a 9-to-5:30 week calculated?

Monday to Friday, 9:00 AM to 5:30 PM with a 30-minute unpaid lunch, at $20.00 an hour
DayStartEndUnpaid break (min)Hours
Monday09:0017:30308.00 h
Tuesday09:0017:30308.00 h
Wednesday09:0017:30308.00 h
Thursday09:0017:30308.00 h
Friday09:0017:30308.00 h
Total hours40.00 h
  • 40.00 h × $20.00 = $800.00

Total$800.00

Hours are rounded to two decimals; amounts use the exact time.

Each day runs 8 hours 30 minutes from start to end. The 30-minute unpaid lunch comes off, which leaves 8.00 hours. Five days make 40.00 hours. With a rate, pay is hours × rate; hours over 40 in the week are paid at ×1.5 under the federal rule.

How do I convert minutes to decimal hours?

Divide the minutes by 60. Time cards and payroll show time in decimal hours, so 8 hours 15 minutes is 8.25 hours, not 8.15. The calculator adds up exact minutes and rounds to two decimals only when it shows a number.

Minutes Decimal hours
5 minutes 0.08
6 minutes 0.10
10 minutes 0.17
15 minutes 0.25
20 minutes 0.33
30 minutes 0.50
40 minutes 0.67
45 minutes 0.75
50 minutes 0.83

How are breaks, overnight shifts and rounding counted?

Does the time card calculator include overtime?

Only when you enter a rate. Then it uses the federal rule: hours over 40 in a workweek at ×1.5 (see the Department of Labor’s overtime page). For California’s daily rules under Labor Code section 510 or your own threshold, use the overtime calculator or the California overtime calculator.

What does this calculator not cover?

Calculations are estimates to help you check your pay. They are not legal, payroll or tax advice.

Can Hourio keep my time card for me?

Hourio is an iPhone app that keeps your time card as you work: tap Start when a shift begins and Stop when it ends, and add a break when you take one. It totals hours and pay for every pay period, and weekly overtime is free in full: any threshold and multiplier, or none. CSV timesheets are free too. PDF timesheets and daily overtime, including the California preset, are part of Pro at $19.99 a year or $39.99 once. The pricing page lists what is free and what is Pro.

Coming soon to the App Store

Questions and answers

How do I calculate hours worked with a lunch break?

Subtract the unpaid lunch from the time between start and end. 9:00 AM to 5:30 PM is 8.5 hours; minus a 30-minute lunch, it is 8 hours.

How do I convert minutes to decimal hours?

Divide the minutes by 60. 15 minutes is 0.25 hours, 30 minutes is 0.50 and 45 minutes is 0.75, so 7 hours 45 minutes is 7.75 hours.

How many hours is 9 to 5?

8 hours from 9:00 AM to 5:00 PM, or 7.5 hours after a 30-minute unpaid lunch. Five such days are 40 hours, or 37.5 hours with the lunch taken off.

How do I count a shift that ends after midnight?

Count across midnight: 10:00 PM to 6:00 AM is 8 hours. Enter the end time as the clock shows it; the calculator reads an end earlier than the start as the next day and counts the shift on the day it started.

Is a 40-hour week overtime?

Not under the federal rule: for most employees, overtime starts after 40 hours in a workweek, so exactly 40 hours is all regular time and the 41st hour is the first overtime hour. In California it can be: four 10-hour days make 40 hours with 8 hours of daily overtime, unless they are an alternative workweek schedule adopted under Labor Code section 511.