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Depreciation calculator

Build a straight-line, declining-balance, sum-of-years-digits or units-of-production depreciation schedule.

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Depreciation calculator
Paste one acquisition cost per line and this tool builds the full depreciation schedule for each asset: the depreciation charged every period, the running accumulated depreciation, and the book value left after each one. Use it to plan capital budgets, check a fixed-asset register, or see how a purchase will look on the books years from now.
Pick the method with the Method option. Straight-line spreads the depreciable amount evenly over the useful life. Declining balance front-loads it, shrinking a percentage of the remaining book value each period — the rate is a multiple of the straight-line rate, so 2 gives the common "double declining" schedule. Sum-of-years digits also front-loads depreciation, by a fraction that falls every year. Units of production ties depreciation to actual output: add the units produced each period after the cost on the same line, and set the total estimated production the asset should deliver over its life.
Useful life and salvage value apply to every asset in the list, so you can paste a whole batch of similar purchases — a fleet of laptops, a run of shop fixtures — and get every schedule at once. Turn on the half-year convention to split the first and last year's depreciation in half, which many tax systems require for assets placed in service partway through a year. Set the currency code, the decimal places, and whether the schedule prints as an aligned table or as plain lines. Unrecognized lines are listed with a note instead of breaking the batch.
Everything runs locally in your browser — nothing you paste is uploaded anywhere, which makes this safe for real purchase prices and internal asset registers. Copy the result, download it as a .txt file, or send it back into the input to adjust the numbers and recalculate.
FAQ
What is the difference between straight-line and declining-balance depreciation?
Straight-line charges the same amount every period. Declining balance charges more in the early periods and less later, because each period’s depreciation is a percentage of the remaining book value rather than a fixed share of the original cost.
How does the units-of-production method work here?
Add the units produced in each period after the cost on the same line, separated by spaces, and set the total estimated production the asset will deliver over its life. Each period is depreciated in proportion to how much of that total it actually produced.
What does the half-year convention do?
It splits the first and last period’s depreciation in half, adding one extra period to the schedule. This models an asset placed in service partway through a year rather than exactly at its start.
Can I calculate several assets at once?
Yes. Paste one acquisition cost per line and the tool builds a separate schedule for each, using the same method, useful life and salvage value for all of them.
Is my financial data uploaded anywhere?
No. The depreciation schedule is calculated entirely in your browser — nothing you enter is sent to a server.