Eight-day repeating rota

4 On 4 Off Shift Pattern Calculator

Set up a 4 on 4 off rota, choose its cycle start date and compare it with another shift pattern to find time off together.

WorkOff
Load this rota and compare The starter remains fully editable. Verify every block against the official rota.
How it works

4 working days followed by 4 rest days

A 4 on 4 off rota repeats every eight days rather than every calendar week. That means working days and rest days move through weekdays and weekends over time.

This starter uses four 12-hour day shifts followed by four complete days off. Many employers alternate days and nights, so check the actual order, times and cycle day 1 shown on your official rota before relying on the result.

Set it up accurately

Calculate dates from the correct cycle start

  1. Choose a date that you know is the first of your four working days.
  2. Load the preset, then change the start and end time if your shift is not 07:00–19:00.
  3. Replace Pattern B with a partner's or colleague's rota, or scan their rota image locally.
  4. Set the minimum shared break—for example 48 hours—to reveal meaningful time off together.
Common questions

4 on, 4 off FAQ

How long is a 4 on 4 off cycle?

Eight days: four working days followed by four days off. Because eight does not divide evenly into a seven-day week, the pattern moves through weekdays and weekends.

Can 4 on 4 off include night shifts?

Yes. Some rotas use blocks of days and nights within a longer cycle. Load the starter and add or change blocks to match the exact published rota.

Which date should I enter as cycle day 1?

Use a date you can verify was the first working day in the repeating cycle. An incorrect cycle start shifts every calculated date.

Worked eight-day cycle

Why 4 on 4 off moves through every weekday

An eight-day cycle does not align with a seven-day week. Each repeat begins one weekday later than the previous repeat, so weekends on duty and weekends off change over time. The cycle start must therefore be anchored to a real working day.

Cycle dayStatusIllustrative hours
1–4Working07:00–19:00
5–8RestComplete days if the final duty ends at 19:00

Days-only variant

Some teams repeat four day duties and four rest days. Enter a single four-day work block followed by four off days.

Rotating day/night variant

Other teams work four days, four off, four nights, four off. That is a 16-day sequence and must not be simplified to eight days.

Leave calculations

A booked duty may connect two rest blocks, but the useful continuous break starts after the previous shift ends and finishes when the next duty begins.

Check before projecting

Verify at least two complete cycles against the official rota. A one-day anchor error reverses every projected work and rest block.

NHS and 24/7 services

Other public sector

General patterns

Detailed rota guides

Check the cycle before you compare

Use these guides to understand overnight boundaries, cycle start dates and common setup mistakes.

Police 6 on, 4 off2 early shifts, 2 late shifts, 2 night shifts and 4 rest daysOpen guide →4 on, 4 off4 working days followed by 4 rest daysCurrent guide2 days, 2 nights, 4 off2 day shifts, 2 night shifts and 4 rest daysOpen guide →Panama 2-2-3Alternating 12-hour day and night sections across 28 daysOpen guide →DuPont rotationDays, nights and a seven-day break in a 28-day cycleOpen guide →