Simple Hours Calculator For 2026

What The Hours Calculator Works Out

• Hours worked: the clocked span from start to end minus unpaid breaks, shown in hours and minutes and in decimal hours. A 9:00 to 17:30 day with a 30-minute lunch is 8h 0m, or 8.00. Shifts over midnight wrap automatically, so 22:00 to 06:00 is 8 hours.
• Decimal hours: minutes are sixtieths, not hundredths, which is where timesheets go wrong: 15 minutes is 0.25, 20 minutes is 0.33 and 45 minutes is 0.75, so 8 hours 45 is 8.75, never 8.45.
• Over 5 days: the day's hours multiplied by five, or by the number of days you set in the advanced options. UK full-time weeks are usually 35 to 40 hours.
• Day's pay: decimal hours multiplied by the hourly rate, gross. Reconcile this against your payslip over the pay period, which is exactly where rounding policies show up.
• Round clock-in and out (advanced): many employers round to the nearest 5 or 15 minutes. Rounding is lawful if it is neutral over time, but rounding that systematically shorts workers below the minimum wage is not.
• Break is paid (advanced): whether breaks count as working time is contractual. Workers are entitled to an unpaid 20-minute rest break on any shift over six hours, 11 hours' rest between working days and a day off each week.
• Overtime after N hours (advanced): splits the day into standard and overtime hours at your chosen multiplier and shows the premium pay. There is no legal right to premium overtime pay in the UK; time and a half is the most common where it is offered.
• Weekly pay and hours per year (advanced): the day scaled up by your days per week and weeks per year, with a flag if the weekly average exceeds the 48-hour Working Time Regulations limit (averaged over 17 weeks, and opt-outable in writing). Keeping your own log of start, end and breaks is the cheapest protection in any hours dispute.

Source and further reading: GOV.UK: rest breaks at work.