Bitcoin DCA Calculator

Bitcoin DCA means investing a fixed dollar amount at regular intervals — weekly, bi-weekly, or monthly — regardless of price. When BTC is expensive your dollars buy less; when it is cheap your dollars buy more. Over time, your average purchase price gravitates toward the market median rather than getting anchored at a single high point.

Bitcoin's volatility makes this especially relevant. Single-year drawdowns of 60-80% are not unusual. Market timing is close to impossible even for institutional traders with sophisticated models. DCA removes the timing decision entirely — you buy on schedule and let compounding and price mean-reversion do the work.

Research across most traditional asset classes finds that lump sum investing outperforms DCA roughly two-thirds of the time, simply because capital enters the market sooner in a rising trend. In Bitcoin specifically, the picture is mixed.

An investor who went all-in on BTC at the November 2021 peak ($69K) was down over 80% by the end of 2022. Someone who started DCA-ing the same total capital across that period bought heavily through $15K–$25K, recovered much faster, and ended up with a meaningfully lower cost basis.

Conversely, an investor who lump-summed at the January 2023 bottom (~$16K) would have outperformed the equivalent DCA spread across 2023 because prices marched upward from there. Which strategy wins depends heavily on whether you started at a local peak or trough — which you cannot know in advance.

The takeaway: DCA is not a return-maximisation strategy. It is a risk-management strategy. It reduces the cost of being wrong about timing.

Step 1 — Size correctly. Only invest money you could genuinely afford to lose entirely. Bitcoin has drawn down 80%+ from peaks twice in the past decade. If your DCA amount would cause financial stress at that scenario, reduce it.

Step 2 — Pick a frequency you will not break. The math between weekly and monthly DCA over multi-year periods is nearly identical. Consistency matters far more than frequency. Monthly is easiest for most people because it aligns with salary cycles.

Step 3 — Automate and forget. Most major exchanges (Coinbase, Kraken, River) allow recurring buys. Set it up once and remove the manual decision. The biggest DCA failure mode is stopping during bear markets — exactly the wrong moment.

Step 4 — Do not obsess over the average cost basis. Watching your cost basis against spot price daily creates anxiety and bad decisions. Check quarterly, rebalance annually, and let the strategy run its course. Use this calculator to set realistic multi-year return expectations before you commit.

Your average cost basis is total USD invested divided by total BTC accumulated. It is your personal breakeven price. If BTC trades above your cost basis, your portfolio is in profit; below it, in the red.

The power of DCA shows most clearly in bear markets. Suppose you bought monthly from $50,000 down to $16,000: the months at $16K–$20K contribute proportionally more BTC to your total, pulling the average cost basis down significantly. This is why long-term DCA investors often find their cost basis lower than they intuitively expected — the down months do more numerical work.

The average cost basis calculation in this tool: Total USD in ÷ Total BTC accumulated = weighted average purchase price across all monthly closing prices in your selected window.