Spare Parts Consumption Calculator
Work out spare parts used and daily usage from stock counts.
Runs in your browser. Nothing is uploaded — your input is processed on this device and discarded when you close the tab.
Spare Parts Consumption Calculator
How to use this tool
- Enter opening stock, parts received during the period and closing stock.
- Enter the number of days in the period.
- Press Generate to see total consumption and average daily use.
Worked example
With opening stock 120, received 40 and closing stock 30, consumption is 120 + 40 - 30 = 130 parts, and over 30 days that is 130 / 30 = 4.33 parts per day.
What this tool does not do / Limits
This assumes stock counts are accurate and that all missing stock was consumed. It does not separate breakage, loss, returns or stock errors.
Frequently asked questions
What if closing stock is higher than opening plus received?
That gives a negative result, which points to a counting error or an unrecorded receipt.
Can I use it for one part type only?
Yes. Run it separately for each part type so the figures stay meaningful.
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