Dollar-cost averaging spreads buys over time so your average entry sits below a falling price. That feels like winning β but a lower average is not profit, it is a lower break-even. The only honest number is the realized P/L: what you would actually bank if you sold right now (current value β total invested). Averaging down can make sense, but know the difference between "my average looks good" and "I made money." Then size new buys with the position size calculator.
Dollar-cost averaging lowers your average entry when price drops β that part everyone knows. What's less obvious: your average only falls by half the drop if you buy equal amounts each time. Buy $100 at $100 and $100 at $50, average is $67, not $75. You now need a 34% recovery to break even, not a 50% bounce back to $100.
The break-even price is total_invested Γ· total_units. This calculator shows it directly. What it also shows: if you've bought 10 times into a falling asset, your break-even might be nowhere near current price β and adding more pushes it down only slightly each time.
DCA works best with fixed schedules into assets you'd hold indefinitely anyway. Using it to average into a leveraged futures position is a different thing entirely and usually ends in a larger loss at the same liquidation price.
Enter your recurring buy amount and how often you buy (weekly, monthly).
Add the price at each interval (or use it to model a range of scenarios).
Read your average cost basis and total position across all buys.
Compare your average entry to the current price to see your real unrealised P&L.
The theory behind it
Dollar-cost averaging means buying a fixed amount on a fixed schedule regardless of price. It removes the impossible task of timing the market and smooths your entry across highs and lows β which is why it's the lowest-stress way to accumulate long-term. Its weakness is that it works on the way up or sideways, but blindly averaging into an asset in permanent decline just buys more of a falling knife. DCA is an accumulation tool, not a rescue for a bad leveraged trade.
Frequently asked questions
Is DCA a good strategy?
For long-term accumulation of an asset you believe in, DCA is one of the most reliable approaches β it removes timing stress and emotional entries. It is not a good tool for averaging down a losing leveraged position, which increases risk rather than reducing it.
How does DCA lower my average price?
Each scheduled buy adds coins at the current price, and your average cost is the total spent divided by total coins held. Buying more when prices are low pulls the average down; the calculator tracks this across every interval automatically.
DCA vs lump sum β which is better?
Historically, lump-sum investing beats DCA more often when markets trend up, because your money is exposed sooner. DCA wins on psychology and in choppy or falling markets by reducing the risk of buying everything at a top.
New to this? Start with our free trading academy β every lesson links to a calculator.