Spare Parts Coverage Planner
Compare spare-part cover with replenishment lead time, reserve stock and pack sizes across an equipment list.
- 1List your spares
- 2Read the answer as you type
- 3Download or print it
Loading the worked example…
Assumptions
Results update as you type. Example figures are illustrative.
Your working data
Edit cells directly or import a CSV. Download “Input CSV” for the required column names. Up to 200 rows; scroll the table sideways for additional fields.
Detailed analysis
Exports include all results, regardless of the search filter. The HTML report includes assumptions and source data; use your browser’s Print command for PDF.
Chart shows the first 20 rows; negative values use a warm color. Click table headers to sort.
Compare up to four scenarios
Capture the current inputs, change assumptions and capture again. Scenarios are included in downloaded projects.
What this model includes
Deterministic coverage from average consumption, not a statistical service-level model. No intermittent-demand or failure probability calculation.
Import and save safely
CSV imports use your current assumptions. Project files restore assumptions, rows and saved scenarios. No automatic saving: download a project before closing this page. Imports are limited to 10 MiB and 200 rows. Calculations run in your browser; the site’s advertising and analytics follow its privacy policy.
Using Spare Parts Coverage Planner
Compare spare-part cover with replenishment lead time, reserve stock and pack sizes across an equipment list.
- Set how many extra buffer days you want.
- List each part with stock, annual use, lead time, reserve, pack size and cost.
- See what to reorder at the top, then download the plan.
Example
The worked example includes Filter, Belt, Seal. Change the first additional buffer days setting and compare the result with a saved baseline.
Questions & answers
What does Spare Parts Coverage Planner calculate?
Compare spare-part cover with replenishment lead time, reserve stock and pack sizes across an equipment list.
What are the important limitations?
Deterministic coverage from average consumption, not a statistical service-level model. No intermittent-demand or failure probability calculation.
Can I continue my work later?
Yes. Save a project JSON file and reopen it with Import CSV / project. It contains the working data, assumptions and up to four scenarios. Nothing is saved automatically.
What CSV columns do I need?
part, stock, annual, lead, reserve, pack, cost. Download Input CSV for a compatible example. CSV imports keep your current assumptions.
Are these example figures current industry benchmarks?
No. They are illustrative values to demonstrate the model. Replace them with figures appropriate to your situation.
Related tools
A useful next step for your task.
Everyday CalculatorsInventory ABC AnalyzerRank stock by annual consumption value, identify value concentration and build an A/B/C review list.
Everyday CalculatorsInventory Cycle Count PlannerTurn class-based counting frequencies into a dated workload and highlight overdue counts against daily capacity.
Everyday CalculatorsPurchase Order TrackerReconcile ordered and received quantities, flag late deliveries and summarize open commitments by supplier.
Everyday Calculators2026 Tax Refund EstimatorEstimate your 2026 federal income tax refund or balance due with the new IRS brackets, standard deduction, tips, overtime, car-loan and senior…
Help improve this tool
Report a problem or suggest an improvement
Describe the issue without pasting private tool input. Feedback goes to our admin inbox.