The 4-3-3-4 schedule gives each parent a 4-day block one week and a 3-day block the next. Read from a different start day the same cycle is called 3-4-4-3 or 3-3-4-4. It is a true 50/50 split with four exchanges per two weeks and longer stretches than the 2-2-3.
In Week 1, Parent A has 4 days (Monday–Thursday) and Parent B has 3 days (Friday–Sunday). In Week 2, it flips: Parent A has 3 days and Parent B has 4 days. The pattern repeats every two weeks. Two transitions per week, four per cycle. The 4-day block lets each parent take the children on a short trip without breaking the schedule.
These are the same 14-day cycle as 4-3-3-4, read from a different start day or with the parents swapped. Overnights, exchanges and the fixed-weekday rhythm are identical; only the name changes.
The same two-week cycle started on the 3-day block: Parent A has 3 days, Parent B 4, then Parent A 4 and Parent B 3. Both parents get a mix of weekday and weekend time every cycle and neither is stuck with all the school nights. Two exchanges per week, four per cycle.
The short blocks first, then the long ones: 3 days each, then 4 days each. Families pick this reading when they want both parents' longer stretches to land in the same week of the cycle, for example for an extended-weekend trip every two weeks. Same overnights and exchange count as 4-3-3-4.
Children on a 4-3-3-4 get longer blocks at each home than they would on a 2-2-3, which usually means less packing fatigue and more 'real' time to settle into routines. The 3-day gap (the longest separation in this schedule) is short enough that even kids 6+ tend to handle it without homesickness, especially with a quick check-in call. The shifting weekly pattern is the main downside for kids — knowing whether 'this week' or 'next week' has the long block requires a calendar.
Parents who both want substantial uninterrupted time but can't make alternating weeks work (because 7 days is too long) often land on 4-3-3-4. The 4-day block is long enough for a weekend road trip; the 3-day block keeps both parents close to the school week.
Before locking in any custody schedule, walk through these prompts with your coparent. The schedule itself is the easy part — making it work over years requires alignment on the things below.
4-3-3-4 is functionally identical to 3-4-4-3 — same pattern, different starting day. If you want fixed weekdays so the days don't rotate, switch to 2-2-5-5. If 4 days still feels short and you want longer stretches, alternating weeks gives 7-day blocks. If you want shorter blocks for more frequent contact, drop to 2-2-3.
Compare every pattern side by side, with overnights and exchanges, on the 50/50 custody schedules page.