How it works
This tool checks arithmetic feasibility against entered time budgets. It is not an electronic logging device, route planner or determination of regulatory compliance. Enter the driving time you have independently established is available.
The formula
Keep currency, units and time periods consistent. Percentage inputs use percentage points (enter 5 for 5%). Results are rounded only for display; tiny nonzero values may use scientific notation. Undefined ratios are shown as unavailable.
With 8 driving hours available, 60 pickup miles and 300 loaded miles at 60 mph require 6 driving hours. Pickup opens at hour 1, loading takes 1 hour and planned delays take 0.5 hour. Delivery is reached at hour 7.5; 0.5 hour unloading finishes at hour 8, within an entered 11-hour elapsed-duty window.
Calculation method
All pickup and delivery windows use elapsed hours from one plan start. For example, a window beginning six hours after departure is 6. Convert calendar dates and time zones into that common reference before entry.
Interpretation
The latest window time is treated as the latest service-start time, not a required completion deadline. Waiting for a window, loading, unloading and entered breaks count toward total elapsed time. Planned delays are placed after loading.
Limitations
The optional elapsed-duty budget is compared with completion time. The tool does not infer mandatory breaks, rest resets, sleeper-berth splits, rolling-cycle limits or exceptions. A plan within these entered limits still requires independent compliance and dispatch review.
Using this in a dispatch decision
Window values are hours after the plan starts, not clock times. A delivery opening of 6 means six hours from the start. The result checks entered limits only; it does not read an ELD or implement all HOS rules and exceptions.
Method and reference sources
Method and content checked 2026-09-20. These sources provide background, not endorsement or professional certification. The formula and limitations above define this calculator.
- FMCSA — Summary of Hours of Service RegulationsOfficial US HOS reference. Our time-planning tools are not regulatory compliance engines.
Frequently asked questions
Does a fitting plan certify HOS compliance?
No. The result only compares your entered available hours, service windows, breaks and elapsed-duty limit. It does not implement legal cycle limits, sleeper-berth rules, exceptions or ELD records.
What is a worked example for HOS Load Feasibility?
With 8 driving hours available, 60 pickup miles and 300 loaded miles at 60 mph require 6 driving hours. Pickup opens at hour 1, loading takes 1 hour and planned delays take 0.5 hour. Delivery is reached at hour 7.5; 0.5 hour unloading finishes at hour 8, within an entered 11-hour elapsed-duty window.