Sleeper Berth Split Calculator for Owner Operators

Check if two rest periods count as a sleeper berth split, and see how many hours you can still drive after the second one.

Start from the moment your last full 10 hours off ended. Put in the work you did before your first rest period, the rest itself, the work in between, the second rest, and the work since. "Other time" is everything that is not driving, like fueling, loading and short stops.

1. Work before

From the start of your shift to your first rest period.

Driving

hrs

Other time

hrs

2. First rest period

Length

hrs

Where

3. Work in between

After the first rest, until the second rest starts.

Driving

hrs

Other time

hrs

4. Second rest period

Length

hrs

Where

5. Work since

After the second rest, up to now. Leave at 0 to plan ahead.

Driving

hrs

Other time

hrs

These two rest periods count as a split

Together they are 10 hours, one is 7 or more hours in the sleeper berth, and neither is under 2 hours.

The four limits

Driving before and after the first rest period10 of 11 hours
Driving before and after the second rest period4 of 11 hours
14-hour window around the first rest period12 of 14 hours
14-hour window from the end of the first rest period5 of 14 hours

You can still drive

7 hours

The 11-hour driving limit ends it

Driving hours left

7 hours

11 minus driving since the first rest

Window hours left

9 hours

14 minus time since the first rest ended, without the second rest

Which splits count

Common sleeper berth splits and whether they count under the federal rule
Split	Counts?	Why
7 sleeper + 3 off duty	Yes	The classic 7/3
8 sleeper + 2 off duty	Yes	The classic 8/2
7.5 sleeper + 2.5 sleeper	Yes	Any mix works if it adds up to 10 and follows the 2 and 7 hour rules
9 sleeper + 2 off duty	Yes	Totals 11, which is fine
7 sleeper + 2 off duty	No	Only 9 hours in total
7 off duty + 3 sleeper	No	The 7 hours must be in the sleeper berth
6 sleeper + 4 off duty	No	Only in the FMCSA pilot, not the rule
5 sleeper + 5 sleeper	No	Only in the FMCSA pilot, not the rule

To log your hours over several days, use the HOS Tracker. To plan a whole trip around the rules, use the HOS Trip Planner.

This follows 49 CFR 395.1(g)(1)(ii) and (iii) for property-carrying drivers, read September 26, 2026. It covers one pair of rest periods in one shift. It does not work out the 30-minute break, the 60 or 70 hour weekly limit, or the short-haul and bad-weather exceptions. FMCSA is testing 5/5 and 6/4 splits and a pause of the 14-hour window in pilot programs, but those are not the rule for other drivers. Your ELD and your carrier's safety team have the final say. This is a planning aid, not legal advice.

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How does the sleeper berth split rule work?

A sleeper berth split lets you cover your 10 hours off with two rest periods: one of at least 7 hours in the sleeper berth and one of at least 2 hours, together at least 10. Neither period counts against your 14-hour window, and your limits are worked out again from the end of the first rest.

Take one rest of at least 7 hours in a row, all in the sleeper berth.
Take a second rest of at least 2 hours in a row, in the sleeper berth or off duty.
Make sure the two rests add up to at least 10 hours.
Check that driving before and after each rest adds up to no more than 11 hours.
Check that the time before and after each rest stays inside the 14-hour window, leaving out the rest periods.
After the second rest, your limits run from the end of the first rest.

Which two rest periods count as a split (49 CFR 395.1(g)(1)(ii))
Rule	What it says
Each period	At least 2 hours in a row
One period	At least 7 hours in a row, in the sleeper berth
Together	At least 10 hours
Driving around each rest	Before plus after, no more than 11 hours
The 14-hour window	Does not include the two rest periods

Rule text read from the eCFR on September 26, 2026. The Flexible Sleeper Berth and Split Duty Period pilots are tests of possible changes and are not the rule for other drivers. The tool covers one pair of rest periods in one shift for property-carrying drivers. It does not work out the 30-minute break, the 60 or 70 hour limit, or the short-haul and bad-weather exceptions. Your ELD is your legal record.

Last reviewed September 2026. Sources: eCFR: 49 CFR 395.1 (sleeper berth, paragraph (g)(1)); FMCSA: summary of hours of service regulations; Federal Register: pilot program to allow commercial drivers to split sleeper berth time; Trucking Dive: FMCSA prepares to expand the flexible driving hour pilots.

Frequently Asked Questions - Sleeper Berth Split Calculator

How does a sleeper berth split work?

You split your 10 hours off into two rest periods instead of one. One period must be at least 7 hours in a row in the sleeper berth. The other must be at least 2 hours in a row, in the sleeper berth or off duty. Together they must be at least 10 hours. The 7/3 and 8/2 splits are the usual ones. The rule is 49 CFR 395.1(g)(1)(ii).

Does a split sleeper berth stop the 14-hour clock?

It does not stop it, but neither rest period counts against the 14-hour window. The rule says the driving limit and the 14-hour limit are worked out again from the end of the first rest period, and the window does not include the qualifying rest periods. The calculator shows the hours left on both.

What is the 7/3 split sleeper berth rule?

It is one rest of at least 7 hours in the sleeper berth and one of at least 3 hours in the sleeper berth or off duty. They add up to 10. Any mix that follows the rule also works, like 7.5 and 2.5 or 9 and 2. Neither rest can be under 2 hours.

Can I split my sleeper berth 5 and 5 or 6 and 4?

Not under the current rule. FMCSA is testing a Flexible Sleeper Berth pilot where one period must be at least 5 hours in the sleeper berth, which would allow 5/5 and 6/4. The full pilot is planned for 2027 with about 256 drivers, so it does not apply to other drivers.

Does off-duty time count toward the 7 hours?

No. The 7 hours must be all in the sleeper berth, in a row. Off-duty time can be used for the other period, which must be at least 2 hours. The calculator marks a period as Both if it mixes the two with no break, and that cannot be your 7-hour period.

Can I split 9 and 1?

No. Neither rest period can be shorter than 2 hours in a row. A 9-hour rest and a 1-hour rest do not make a split, even though they add up to 10.

How many hours can I drive after a split?

You get the smaller of two numbers. The driving limit is 11 hours minus the driving you did since the end of the first rest period. The window is 14 hours minus the time since the first rest ended, without the second rest. Enter your shift in the calculator to see both.

Is there a limit on driving before and after the rest periods?

Yes. Driving in the period just before and just after each rest period, added together, cannot pass 11 hours. It also cannot break the 14-hour limit. The calculator checks this around both rest periods.

Why does my ELD split sleeper berth not match this?

ELD makers pair rest periods in different ways, and this tool covers one pair inside one shift. It also does not work out the 30-minute break or the 60 or 70 hour weekly limit. Your ELD record is the legal log. Ask your ELD provider or your carrier's safety team when the numbers differ.

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