Open the tool
The DCA calculator turns a “buy every month” plan into numbers using CoinGecko history: how many coins you would have accrued and what that stack is worth now.
Launch DCA Calculator →Purpose
The DCA calculator turns a “buy every month” plan into numbers using CoinGecko history: how many coins you would have accrued and what that stack is worth now.
When to use it
- You want a backtest of fixed monthly USD buys into BTC or ETH
- You are comparing DCA windows before automating buys on an exchange
- You need invested vs mark-to-market on one chart
- You are explaining DCA to someone who only watches all-time-high entries
How to use it
- Pick a coin. Choose the asset you want to simulate (majors work best on long ranges).
- Set monthly USD amount. Enter how much you would invest each month in USD terms.
- Choose start and end dates. Keep ranges realistic for free API quotas; shorten if the request is throttled.
- Run and read the curve. Review invested, coins, live value, ROI, and the equity curve versus cash invested.
Benefits
- Uses real market_chart history instead of a straight-line fantasy
- Shows drawdowns clearly when value dips under cash invested
- Helps set expectations before you automate recurring buys
- Links naturally to historical price and profit tools
Pitfalls to avoid
- Past simulated ROI is not a promise of future results
- Long windows can hit CoinGecko rate limits on free plans
- Thin alts may have sparse candles
- Does not model exchange outages, failed buys, or varying fee tiers
How the simulation buys each month
Each month the tool buys your USD amount at the first available CoinGecko candle in that month, adds coins to the stack, then marks the total to the live spot price. ROI is (value − invested) / invested. That path dependency is the point: bull and bear months both show up.
When the equity curve sits under the cash line, you are in an unrealized drawdown. That is common after late-cycle starts. It does not mean DCA “failed”; it means timing still mattered even with a schedule.
Choosing a useful date range
Prefer multi-year windows on BTC and ETH when the API allows. On thin alts, shorter windows reduce empty candles and rate-limit pain. If a long request fails, shorten the range and retry after a minute rather than hammering the endpoint.
Pair results with the historical price checker when you care about a single date, and with the profit calculator when you model selling part of the stack.
Purpose and limits of DCA tools
The purpose is education and planning, not a guarantee. Dollar-cost averaging reduces the pressure of a single entry; it does not remove market risk. CryptonicTools runs the math with public prices and no account so you can iterate scenarios quickly on mobile.
Related links
Updated 2026-09-09. Educational only — not financial advice.