Bitcoin DCA Backtest Calculator

The logic of a DCA backtest is simple: assume that in each selected month, you spend the same amount buying bitcoin at that month's price. When the price is high you buy less, when it's low you buy more — that's the heart of DCA "automatically buying more on the dips."

The three numbers most worth watching

• Average cost: the weighted average price of all your buys. It usually lands between the "highest price" and the "lowest price," not at some extreme — which is exactly what DCA does: trade timing for discipline.
• Bitcoin accumulated: how much BTC you actually hold. DCA's goal isn't "buy at the very bottom" but "keep moving chips into your own hands."
• Profit/loss: current value minus invested principal. Note: in certain stretches of a bear market, this number will be negative — that's normal, and a reality DCA must accept.

One reminder

Where a backtest most easily fools you is "survivorship bias": you already know bitcoin has risen over these years, so looking back, it's a win no matter what. But living through it, no one knew the ending. A backtest can help you understand DCA's mechanics, but it can't be used to promise future returns. Treat it as a tool for intuition, not a guarantee of profit.

To understand the full logic behind DCA, read the complete bitcoin DCA guide; to learn why time beats timing, read the compounding effect.