Calculator
Equipment Lifecycle Calculator
Estimate equipment age, lifecycle consumed, remaining service life, replacement year, straight-line depreciation, accumulated depreciation, and book value.
Calculator Inputs
Legend
Equipment Lifecycle Calculator guidance
Lifecycle consumed = equipment age / expected service life x 100. Annual depreciation = (purchase price - salvage value) / expected service life. Book value = purchase price - accumulated depreciation.
Input meaning
- Installation year: enter the measured, quoted, or hospital-approved value.
- Expected service life: enter the measured, quoted, or hospital-approved value in years.
- Current year: enter the measured, quoted, or hospital-approved value.
- Purchase price: enter the measured, quoted, or hospital-approved value.
- Salvage value: enter the measured, quoted, or hospital-approved value.
Result interpretation
- Use the result as a planning estimate, not as a final approval by itself.
- Record the assumptions used so Procurement, Biomedical, Facilities, Finance, and vendors can review the same basis.
Assumptions
- Depreciation is an accounting estimate and does not replace replacement-priority review.
- Replacement decisions should also review downtime, parts availability, utilization, safety risk, and clinical suitability.
- Follow hospital finance policy for official depreciation records.
Biomedical use
- Use this calculator during RFQ preparation, technical evaluation, acceptance planning, service review, or biomedical workload planning.
How to identify the required values
Use these examples and common working ranges to choose values from gauges, labels, manuals, datasheets, RFQs, service reports, CMMS records, or hospital planning assumptions.
| Field | Example value | Common range | Tip |
|---|---|---|---|
| Installation year | Example: 2018. | Use commissioning year, not purchase-order year, when replacement planning is based on service age. | Use commissioning year when planning replacement from service age. |
| Expected service life | Example: 10 years. | Many biomedical assets are planned over 7-10 years; imaging systems often 8-12 years. | Use the hospital replacement policy for the equipment category. |
| Current year | Example: 2026. | Use the current planning year for capital replacement review. | Use the year of the capital planning cycle. |
| Purchase price | Example: 100000. | Use total awarded equipment price before recurring service and consumables. | Use the same currency for every cost input. |
| Salvage value | Example: 0. | Often zero for medical equipment unless a trade-in, buyback, or disposal value is approved. | Use approved salvage, buyback, or trade-in value only. |
Common ranges are starting points for hospital planning. For final procurement, acceptance testing, electrical design, medical gas design, radiation shielding, dialysis water systems, or clinical use, replace the example values with site-specific data and vendor-confirmed figures.
Input Checklist
Confirm these values before relying on the output for procurement, PM, or service planning.
- Installation year
- Expected service life
- Current year
- Purchase price
- Salvage value
Safety And Engineering Notes
Use calculator outputs as planning estimates and verify critical systems with calibrated measurement or qualified engineering review.
- Depreciation is an accounting estimate and does not replace replacement-priority review.
- Replacement decisions should also review downtime, parts availability, utilization, safety risk, and clinical suitability.
- Follow hospital finance policy for official depreciation records.
Related Calculators
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