Everhour tracks time and absences around your spreadsheet workflow, while Excel calculates utilization from the rules you choose.
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 Excel resource planning sheet answers one practical question: how much of a person's available time became billable work during the period you selected. The sheet can calculate that rate by employee, role, team, client, project, week, or month. It needs billable hours from timesheets and an available-hours denominator that matches your firm's policy, not a generic national target.
Excel fits this job because it can combine timesheet rows, capacity assumptions, and holiday lists in one workbook. A typical setup uses `SUMIFS` to total billable hours by employee and date range, `NETWORKDAYS` to count working days, and structured table references so formulas expand when new rows are added. The result matters for staffing, pricing, workload review, and margin checks.
The denominator controls the meaning of the utilization rate. Billable hours divided by total recorded hours measures the share of logged time that was billable, but the rate inflates when people skip non-billable entries. Billable hours divided by fixed capacity, such as 40 hours per week, shows performance against a planned baseline and can exceed 100% when billable hours go above capacity.
For U.S. teams, federal law does not define full-time or part-time employment, so the full-time denominator is an employer policy choice. Many firms use 40 weekly hours as a gross baseline because federal overtime rules require covered nonexempt employees to receive overtime pay for hours worked over 40 in a fixed 168-hour workweek. A 40-hour week equals 2,080 gross annual hours before PTO, holidays, unpaid leave, and other absences.
The core formula is billable hours divided by available hours for the same person and period. In Excel, billable hours usually come from `SUMIFS`, filtered by billable flag, employee, and date range. Available hours can come from fixed weekly capacity or from working days multiplied by daily capacity, then reduced by PTO, sick leave, holidays, or other approved absences when your firm measures net working-time utilization.
For example, a two-week Excel planning period has 10 working days at 8 hours per day, or 80 gross capacity hours. The employee has 16 hours of PTO and 4 hours of sick leave, so net available hours are 60. If `SUMIFS` returns 30 billable hours for that employee and period, utilization is 30 ÷ 60 = 0.50, or 50%.
The most common Excel mistake is averaging individual utilization percentages in a team summary. Rollups should divide summed billable hours by summed available hours. A PivotTable can group timesheet and capacity data by employee, role, team, project, client, or period, and numeric value fields default to `SUM`, which supports the correct rollup when the calculated rate uses those summed inputs.
Excel also needs a clear boundary for absence handling. `NETWORKDAYS(start_date, end_date, [holidays])` excludes weekends and any holiday dates supplied in the optional holidays range, but it does not know your PTO approvals, sick leave, FMLA leave, or part-time schedules unless you add them. Eligible employees of covered employers may take up to 12 workweeks of unpaid, job-protected FMLA leave for qualifying reasons, and actual leave taken should reduce available hours when you use a net-working-hours denominator.
A one-off Excel calculation is enough when you need a quick check for one person, one project, or one month. Keep the workbook narrow: source hours, billable flag, date range, capacity, absence hours, and the final percentage. A lightweight sheet also works for small teams when one person controls the inputs and reviews formulas before decisions leave the workbook.
A managed workflow becomes necessary when utilization feeds staffing, billing, payroll review, or client reporting every week. Everhour Time Off tracks vacations, sick leave, and custom leave types with partial-day durations, accrual and carryover, per-employee balances, approval workflows, and time-off data that flows into timesheets and reports. That gives the spreadsheet a cleaner source of approved absence data instead of manual edits.
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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Excel should calculate utilization as billable hours divided by available hours for the same employee, team, project, or period. Use `SUMIFS` to total billable time from timesheet rows, then divide by the chosen denominator. The denominator can be total recorded hours, fixed capacity hours, or net working hours after PTO, sick leave, holidays, and other approved absences.
Use gross capacity when you want a stable comparison against a standard schedule, such as 40 hours per week. Use net available hours when you want utilization to reflect time the person was actually available to work. PTO, sick leave, holidays, and FMLA leave taken should reduce the denominator only under a net-working-hours policy.
Averaging percentages gives each person the same weight, even when their available hours differ. A part-time employee with 20 available hours and a full-time employee with 80 available hours should not carry equal weight in a team utilization rate. Sum all billable hours, sum all available hours, then divide the totals.
`SUMIFS` matters for billable-hour totals because it can filter by employee, project, date range, client, role, and billable status. `NETWORKDAYS` matters for capacity because it returns whole working days between two dates while excluding weekends and supplied holiday dates. Structured references and calculated columns keep formulas aligned as the source table grows.
U.S. federal sources do not set a professional-services utilization target. The target is a firm, role, service line, or industry benchmark choice. Federal rules still affect common capacity assumptions: covered nonexempt employees receive overtime pay for hours worked over 40 in a fixed 168-hour workweek, and the FLSA does not require paid vacation, sick leave, or holiday pay for private employers.
Everhour Time Off tracks vacations, sick leave, holidays, and custom leave types with partial-day durations, accrual, carryover, per-employee balances, and approval workflows. Approved time off flows into timesheets and reports, so Excel utilization workbooks can use cleaner absence totals instead of manually maintained PTO columns.
Everhour Reporting turns logged time, budgets, costs, and project data into configurable reports with columns, grouping, filters, date ranges, and exports to CSV, Excel/XLSX, or PDF. Teams can review utilization by employee, project, client, or period, then export the data when spreadsheet analysis or archive records are needed.
Use approved leave data before calculating capacity. Everhour Time Off keeps PTO, sick leave, holidays, and custom leave visible in timesheets and reports for cleaner utilization planning.
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