DCA Average Price Calculator
Calculate your average buy price and total position from multiple DCA (dollar-cost averaging) purchases.
How to use this tool
- Enter the price and dollar amount for each purchase.
- Set price and amount to 0 for any buys you did not make.
- Read your total invested, total coins acquired, and average buy price.
Dollar-cost averaging (DCA) reduces the impact of volatility by spreading purchases over time. This calculator finds your blended average price from up to three buys.
Formula
For each buy i: Coinsi = Amounti ÷ Pricei
Total invested = Amount1 + Amount2 + Amount3
Total coins = Coins1 + Coins2 + Coins3
Average price = Total invested ÷ Total coins
How it works
Dollar-cost averaging splits a total investment into multiple purchases made at different prices. This calculator computes the weighted-average cost basis by dividing the total fiat spent by the total coins accumulated across up to three buys.
Because you acquire more coins when the price is low and fewer when it is high, the average price is always pulled below the arithmetic mean of the purchase prices — this is the mathematical advantage of DCA over lump-sum buying into volatile markets. Inputs with a zero price or zero amount are ignored.
Worked example
Worked example: two equal $100 buys at $100 each
- Buy 1: $100 at $100 → 100 ÷ 100 = 1.00 coin.
- Buy 2: $100 at $100 → 100 ÷ 100 = 1.00 coin.
- Buy 3: $0 at $0 → 0 coins (ignored).
- Total invested = $100 + $100 = $200; total coins = 1 + 1 = 2.
- Average price = $200 ÷ 2 = $100.
Average buy price: $100 for 2 coins from $200 total invested.
Key terms
- Dollar-cost averaging (DCA)
- An investment strategy of buying a fixed dollar amount of an asset at regular intervals, regardless of its price.
- Average cost basis
- The mean price paid per coin across all purchases, weighted by the dollar amount spent at each price.
- Weighted average
- An average where each value is weighted by the corresponding investment size rather than treated equally.
- Lump-sum investing
- Investing all capital at once, as opposed to DCA; can outperform DCA in steadily rising markets but carries higher timing risk.
- Position size
- The total number of coins or tokens accumulated across all purchases.
Frequently asked questions
- What is dollar-cost averaging (DCA)?
- DCA is a strategy of investing a fixed dollar amount at regular intervals regardless of price. It lowers your average cost when prices fall and avoids the risk of investing everything at a peak.
- How is the average price calculated?
- Average price = total dollars invested ÷ total coins acquired. This is a weighted average that accounts for buying more coins when the price is lower.