Nurse Staffing Ratio Calculator
Calculate the number of nurses needed and patient-to-nurse ratio based on patient census, unit type, and shift length.
Medical Disclaimer
This calculator is for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about your health. Never disregard professional medical advice or delay seeking it because of results from this tool.
Inputs
Results
Nurses Needed
4 nurses
Patient-to-Nurse Ratio
5:1
How to Use This Calculator
- Enter total patient count and select unit type (ICU, med-surg, ED, etc.).
- Enter shift hours (typically 8 or 12).
- Read the recommended number of nurses needed based on evidence-based staffing ratios.
- Review the nurse-to-patient ratio and compare against your facility and state mandates.
- Use results to justify staffing requests or analyze overtime and float pool needs.
How the result changes with Patient Census
| Patient Census | Nurses Needed | Patient-to-Nurse Ratio |
|---|---|---|
| 21 | 5 nurses | 4.2:1 |
| 71 | 15 nurses | 4.7:1 |
| 130 | 26 nurses | 5:1 |
| 180 | 36 nurses | 5:1 |
What each input means
- Patient Census
- Total number of patients on the unit for the shift.
- Unit Type
- Select hospital unit type.
- Shift Length
- Length of the shift in hours (typically 8 or 12).
How this is calculated
Worked example, using the default values
- Identify Input ParametersPatient Census = 20, Unit Type = 2, Shift Length = 12 = 3 input(s) provided
- Calculate Nurses NeededNurses Needed4 = 4
- Calculate Patient-to-Nurse RatioPatient-to-Nurse Ratio5 = 5
- Calculate Total Nurse HoursTotal Nurse Hours48 = 48
- Calculate Within Safe RatioWithin Safe Ratio1 = 1
Engine last updated . Checked against 1 independently-derived test — how we verify calculators.
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