# Units of Production Depreciation Calculator

> Calculate depreciation per unit and depreciation for a production period, with a lifetime-usage schedule summary.

Page: https://askcalculators.com/calculator/units-of-production-depreciation-calculator/
Definition: https://askcalculators.com/calculator/units-of-production-depreciation-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/units-of-production-depreciation-calculator/schema.json
Version: 1.0.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/calculator/units-of-production-depreciation-calculator/?cost=100000&salvageValue=10000&estimatedTotalUnits=500000&unitsThisPeriod=60000&unitsBeforePeriod=120000

## Inputs
- cost: Asset cost; type=money; required; default=100000; min=0.01
- salvageValue: Salvage value; type=money; required; default=10000; min=0
- estimatedTotalUnits: Estimated lifetime units; type=number; required; default=500000; min=0.000001
- unitsThisPeriod: Units produced this period; type=number; required; default=60000; min=0
- unitsBeforePeriod: Units produced before this period; type=number; required; default=120000; min=0

## Outputs
- depreciationPerUnit: Depreciation per unit; format=currency; primary
- periodDepreciation: Period depreciation; format=currency
- accumulatedDepreciation: Accumulated depreciation; format=currency
- endingBookValue: Ending book value; format=currency
- remainingUnits: Remaining estimated units; format=number

## Formula
depreciation per unit = (cost − salvage) ÷ estimated total units

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.

Notice: Depreciation treatment varies by accounting policy and tax jurisdiction.