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WorkHoursKit

24/7 Staffing Calculator

Estimate staffing for positions that must be continuously covered.

Continuous coverage FTE Relief reserve Whole headcount
Privacy: calculations are completed in your browser. The calculator does not require an account or send the entered values to a WorkHoursKit database.

How to use the 24/7 Staffing Calculator

  1. Provide positions that must be continuously covered, weekly hours per employee and reserve percentage using one consistent planning period.
  2. Confirm productive hours, absence assumptions, relief needs and post-specific restrictions.
  3. Calculate the result to estimate base FTE, adjusted FTE and rounded whole headcount for 24/7 coverage.
  4. When reviewing the output, watch for treating the rounded planning estimate as a guaranteed safe or compliant minimum.

What this calculator does

Estimate staffing for positions that must be continuously covered. The calculator uses positions that must be continuously covered, weekly hours per employee and reserve percentage to estimate base FTE, adjusted FTE and rounded whole headcount for 24/7 coverage.

The result is a planning estimate based on numerical coverage assumptions. Operational requirements such as qualifications, post restrictions, supervision and simultaneous demand may increase the real requirement.

Base FTE = weekly coverage hours divided by weekly hours per employee. Adjusted FTE includes reserve.

Coverage hours are not the same as headcount

One continuously covered position requires 168 staffed hours in a seven-day week. Converting those hours to FTE depends on productive weekly hours per employee, and a reserve percentage adds capacity for non-productive time. The final whole-person roster may still need adjustment for qualifications and shift design.

Calculation example

Example input: 1 position, 24 hours, 7 days, 40-hour employees and 20% reserve

Example result: 5.04 adjusted FTE, rounded to 6 employees.

For a real record, replace every sample value with your own data and verify productive hours, absence assumptions, relief needs and post-specific restrictions.

How to interpret the result

The most important verification point is productive hours, absence assumptions, relief needs and post-specific restrictions. Also check for treating the rounded planning estimate as a guaranteed safe or compliant minimum before using the result in payroll, scheduling, staffing or reporting.

Practical checks before using the result

  • Verify the key assumption: productive hours, absence assumptions, relief needs and post-specific restrictions.
  • Avoid a common error: treating the rounded planning estimate as a guaranteed safe or compliant minimum.

Calculation design and testing notes are documented in the Calculator Methodology and Accuracy Policy.

Related WorkHoursKit tools

Relief Factor Calculator Estimate how many additional employees are needed to cover nonproductive paid time. Minimum Headcount Calculator Translate required staffed shift hours into base and adjusted FTE. Roster Size Calculator Convert a weekly staff-hour requirement into a practical roster size. FTE Calculator Express a group of labor hours as full-time equivalent positions.
Important: verify source information, official requirements and workplace policies before using a result for payroll, compliance, scheduling, staffing or employment decisions.