Depreciation Calculator — exponential decay model

Estimate remaining value after annual depreciation percent over multiple years. Useful for cars, bikes, electronics, and gear.

Calculator

Original valueAnnual depreciation (%)Years

Estimated remaining value$1,102.74

This uses a simple compound depreciation model each year: value multiplies by (1 − rate). It is a planning curve, not a market appraisal.

Formulavalue = original × (1 − rate/100)^years

Real markets have step changes (new model releases), seasonality, and condition premiums. Treat output as a baseline scenario.

Automate monitoring with PriceWatcher— paste a product or listing URL and get email alerts when prices, stock, or listings change.