Hours-of-Service Calculator for Truck Drivers
Put in where your clocks stand and see how long you can legally keep rolling, when the 30-minute break hits, and how many days a run really takes once every 10-hour reset and 34-hour restart is counted. Based on the FMCSA property-carrying rules in 49 CFR 395.3.
1. Where your clocks are right now
You can drive
11h
Limited by the 11-hour rule
30-min break due in
8h
of driving, then a 30-min stop
11-hour driving left
11h
14-hour window left
14h
70-hour cycle left
70h
Next reset
10 h off
restores the 11 and 14
2. Plan a trip from here
Enter drive time, or miles and an average speed. We lay out every break and reset the rules require.
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Frequently asked questions
- What is the 11-hour driving rule?
- A property-carrying driver may drive up to 11 hours after taking 10 consecutive hours off duty (49 CFR 395.3(a)(3)).
- How does the 14-hour window work?
- Once you come on duty after 10 hours off, you may not drive after the 14th consecutive hour. Breaks, fueling and loading do not pause or extend the 14-hour clock; you can still do non-driving work after it runs out.
- When do I need a 30-minute break?
- After 8 cumulative hours of driving without at least a 30-minute interruption. The interruption can be off duty, sleeper berth or on-duty not driving time, or a mix of those.
- What is the difference between the 60-hour and 70-hour limits?
- If your carrier does not operate every day of the week you may not drive after 60 on-duty hours in 7 consecutive days. If it operates every day, the limit is 70 hours in 8 consecutive days. On-duty time includes driving plus on-duty not driving work.
- How does the 34-hour restart work?
- Taking 34 or more consecutive hours off duty ends your 7 or 8-day period, so your 60/70-hour cycle starts again from zero.
- Can I use this calculator instead of my ELD or logbook?
- No. It is a planning aid for estimating trip time. It does not cover sleeper-berth splits, the adverse-driving or short-haul exceptions, or state rules, and it is not a record of duty status. Your ELD is your legal log.
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