Use this split sleeper berth calculator to check whether your rest periods qualify under the 7/3 split sleeper berth or 8/2 sleeper berth split rules. Enter your two qualifying breaks plus the driving and on-duty time between them to see whether the split is valid and how much drive time and on-duty time remain.
The split sleeper berth rule gives property-carrying drivers a way to divide the required 10-hour off-duty period into two qualifying periods. Under FMCSA guidance, one period must include at least 7 consecutive hours in the sleeper berth, the other must be at least 2 consecutive hours off duty or in the sleeper berth, and the two periods must total at least 10 hours. When paired correctly, neither qualifying period counts against the 14-hour driving window.
For educational purposes only. Not a substitute for official ELD or FMCSA compliance guidance. Always verify with your carrier and current regulations (49 CFR 395.1(g)).
How does this calculator help?
Trying to calculate a split by hand is where most confusion starts, especially when you need to figure out what happens to your 14-hour window after the second break is completed.
This calculator gives you a faster way to check a 7/3 split sleeper berth or an 8/2 sleeper berth split without guessing through the math.
A good split sleeper berth calculator should do more than say yes or no. It should help you understand whether your breaks qualify, how much of your 11-hour driving limit is left, and how much on-duty time remains after the split is applied.
How to calculate a split sleeper berth
To calculate split sleeper berth time, first identify the two qualifying rest periods you want to pair. One qualifying period must include at least 7 consecutive hours in the sleeper berth, while the other must be at least 2 consecutive hours off duty or in the sleeper berth, and both periods together must total at least 10 hours.
Once the second qualifying break is completed, the 14-hour clock is recalculated from the end of the first qualifying break. That recalculation point is the part many drivers find confusing, which is why a calculator is useful for checking remaining driving and on-duty availability before you move again.
7/3 and 8/2 examples
A 7/3 split sleeper berth example would be a 3-hour off-duty break paired with a 7-hour sleeper berth period. If the two periods total at least 10 hours, they can qualify as a legal split and be used to recalculate the 14-hour window.
An 8/2 sleeper berth split works the same way, except the longer period is at least 8 consecutive hours in the sleeper berth and the shorter period is at least 2 consecutive hours off duty or in the sleeper berth. The order does not change the rule that the new calculation point is based on the end of the first qualifying break.
FAQ
What is a split sleeper berth calculator?
A split sleeper berth calculator is a tool that checks whether two rest periods qualify under the FMCSA sleeper berth provision and then estimates your remaining driving and on-duty time. It is useful because split calculations depend on qualifying break lengths, total rest time, and the recalculated 14-hour window.
What are the legal split sleeper berth options?
The legal split options for most property-carrying drivers are the 7/3 split and the 8/2 split. In both cases, the paired periods must total at least 10 hours, and the longer qualifying period must include at least 7 consecutive hours in the sleeper berth.
Does the short break have to be in the sleeper berth?
No. FMCSA guidance says the shorter qualifying period may be off duty or in the sleeper berth, while the longer qualifying period must include the required sleeper berth time.
How does the split affect the 14-hour clock?
When both qualifying breaks are completed and paired correctly, neither period counts against the 14-hour window. The available hours are recalculated from the end of the first qualifying break, which is why accurate logging matters so much.
Is this an FMCSA split sleeper berth calculator?
This page is built around current FMCSA split sleeper berth guidance and the property-carrying HOS rules. It should still be presented as an educational calculator, not as a replacement for your ELD, carrier policy, or official regulatory guidance.