Laptop depreciation
- Input
- $1,200 initial value, $200 salvage value, 5-year useful life, 2 years old
- Result
- $800 current value
- Action
- Repair or resell while meaningful value remains.
Measure time-based loss
Depreciation Calculator
Calculate current value, annual depreciation, total depreciation, and remaining value percentage with a free depreciation calculator.
Estimate current value, annual depreciation, and remaining value percentage.
Current value$800
Annual depreciation$200
Total depreciation$400
Remaining66.7%
Scoring logic
Straight-line depreciation formula
Annual depreciation = (initial value - salvage value) / useful life. Current value = initial value - accumulated depreciation.
Initial value
The purchase price or starting value.
Salvage value
The expected value at the end of useful life.
Current age
How long the asset has been used.
Sample results
Office equipment
- Input
- $3,000 initial value, $500 salvage value, 5-year useful life, 4 years old
- Result
- $1,000 current value
- Action
- Plan replacement soon if maintenance cost is rising.
Camera gear
- Input
- $2,000 initial value, $600 salvage value, 7-year useful life, 3 years old
- Result
- $1,400 current value
- Action
- Keep using unless resale demand is unusually strong.
What to do next
If current value is close to salvage value, consider using or retiring it. If value remains high, repair, resell, or maintain it.
Action playbook
- Compare current value with repair or replacement cost.
- Use remaining value percentage to decide whether to maintain, sell, or retire.
- Recalculate when salvage value changes in the market.
Common use cases
Estimate resale timing.
Plan replacement budgets.
Compare asset maintenance decisions.
FAQ
Is this an exact result?
The tools provide practical estimates. Use them for planning, comparison, and prioritization.
Why does Decay.day group these tools together?
Each tool measures a form of value loss over time, then helps you decide what to refresh, fix, review, or retire.
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