Hours of Service (HOS) Calculator
A quick planning check against the core FMCSA drive-time limits. This is not your ELD record.
Today so far
Clock time since coming on duty, including any breaks.
You can drive up to
How remaining hours are estimated
- Drive-time limit remaining = 11 − hours driven today
- On-duty window remaining = 14 − hours elapsed since starting today's shift
- Cycle limit remaining = cycle limit (60 or 70) − cycle hours already used − today's on-duty hours
- You can drive up to the smallest (binding) of the three
This models the core rules only. It does not account for adverse driving conditions, the short-haul exemption, sleeper-berth split options, or other FMCSA exceptions in 49 CFR Part 395. Always confirm against your ELD and current regulations.
Frequently asked questions
What is the 11-hour driving limit?
Under core FMCSA rules, a property-carrying driver may drive up to 11 hours after 10 consecutive hours off duty.
What is the 14-hour rule?
A driver may not drive after the 14th hour since coming on duty, following 10 consecutive hours off duty. The 14-hour window keeps running during on-duty time and most breaks; it is not paused, with limited exceptions such as qualifying sleeper-berth splits.
What is the 70-hour/8-day rule?
A driver may not drive after 70 hours on duty in 8 consecutive days (or 60 hours in 7 days for carriers on that cycle). The cycle resets with 34 consecutive hours off duty.
Does this calculator replace my ELD?
No. This is a rough planning aid for estimating remaining hours. Your electronic logging device is your official hours-of-service record. This tool does not model every FMCSA exception.
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