Everhour connects capacity planning with tracked time, while efficiency math shows how actual work compares with planned effort.
Measure billable utilization against total capacity and see exactly how many hours you're leaving on the table each period.
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An efficiency rate calculation answers one practical question: did the work take the amount of effort you planned for it? The clean formula is planned hours divided by actual hours, then multiplied by 100. If a project had 120 planned hours and the team used 150 actual hours, the efficiency rate is 80%. The result says the team spent more time than planned to produce the same scoped work.
This metric is separate from utilization. Utilization compares billable hours with an available-hours denominator, usually capacity defined by the firm. In the United States, the FLSA does not define full-time or part-time employment, so a U.S. utilization denominator should treat full-time capacity as an employer policy rather than a federal legal threshold. Efficiency judges work against a plan. Utilization judges time against capacity.
Efficiency rate needs actual hours in the denominator. Actual hours should be the time spent completing the work being measured, not the employee's total weekly capacity and not every logged hour across unrelated projects. If the team spent 150 hours on a fixed-scope implementation, use 150 actual implementation hours. Excluding unrelated admin time keeps the result tied to delivery performance.
Utilization needs a different denominator. Many U.S. firms use 40 weekly hours as gross capacity because federal overtime rules require covered nonexempt employees to receive overtime pay for hours worked over 40 in a fixed 168-hour workweek. That creates 2,080 annual gross hours before subtracting company PTO, holidays, unpaid leave, or other nonworking time. Mixing that capacity denominator into efficiency turns a delivery metric into a staffing metric.
Use this formula: efficiency rate = planned hours divided by actual hours multiplied by 100. A team planned 120 hours for a client deliverable and logged 150 actual hours to finish it. The efficiency rate is 120 divided by 150, then multiplied by 100, which equals 80%. A result below 100% means actual time exceeded the plan. A result above 100% means the work took less time than planned.
Compare that with utilization for the same period. If the same team member logged 120 billable hours against 160 available hours, utilization is 75% using available hours as the denominator. The same 120 hours produces two different rates because the denominator changed. Efficiency uses 150 actual delivery hours. Utilization uses 160 available hours. Labeling the denominator beside each result prevents the most common reporting error.
A one-off calculator is enough when you need a quick variance check after a project, proposal, sprint, or billing period. Enter planned hours, enter actual hours, and use the percentage to decide whether the estimate held. That works for a small team, a single fixed-scope job, or a manual postmortem where the inputs already exist in a timesheet or project report.
A managed workflow becomes necessary when efficiency, utilization, and capacity need to stay current across people and projects. Everhour Resource Planning shows team workload on visual timelines with member and project views, weekly capacity, availability gaps, scheduled time off, and planned-vs-actual comparisons. That workflow lets a manager see whether an efficiency issue came from a bad estimate, unavailable capacity, or overallocated staff.
This content is for general information only, may not be fully up to date, and is provided without any warranty or liability.
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Efficiency rate equals planned hours divided by actual hours, multiplied by 100. If planned hours are 120 and actual hours are 150, the efficiency rate is 80%. Use planned hours for the same work that produced the actual hours. Do not use total company capacity, total payroll hours, or unrelated non-billable time in the denominator.
Efficiency rate and utilization rate measure different things. Efficiency compares planned hours with actual hours for completed work. Utilization compares billable hours with available capacity. A person can show low efficiency on one project and high utilization for the month if they stayed busy on billable work but exceeded the estimate.
Actual hours should include time spent completing the work included in the plan. For a client deliverable, count the project hours tied to that deliverable. Exclude company holidays, paid leave, sick leave, and unrelated admin time unless the original plan included those categories. OECD annual hours actually worked also exclude time not worked because of public holidays, annual paid leave, illness, and similar absences.
Efficiency can improve when actual hours drop below planned hours, but profit still falls if billing rates, write-offs, scope changes, or non-billable rework reduce revenue. Efficiency measures time performance against a plan. It does not measure realization, margin, or cash collected. Pair efficiency with realization when the question is whether planned work became billable revenue.
PTO and holidays affect capacity planning more than efficiency rate. The FLSA does not require payment for time not worked, including vacations, sick leave, or federal or other holidays, so paid leave is a policy or contract input for private employers. If a planned delivery schedule excluded PTO and holidays, actual work hours should exclude them too.
Everhour Resource Planning compares planned capacity with actual tracked time on visual timelines. Managers can review member and project views, account for scheduled time off, and spot availability gaps before a project exceeds its planned effort.
Everhour Reporting turns logged time, budgets, costs, and project data into customizable reports. Teams can group and filter by project, client, member, billable time, labor costs, and budget metrics, then export reports in CSV, Excel/XLSX, or PDF for review.
Use Everhour Resource Planning to compare planned work with tracked time, scheduled time off, and weekly capacity, so efficiency reviews lead to better staffing decisions.
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