Dollar Cost Averaging Calculator
See how averaging into an asset over several fixed-dollar buys builds up your shares, your average cost, and your return.
Independently verified for accuracy
Calculator by Toolsloft ↗- Total invested
- 2000
- Total shares
- 50.5
- Average cost
- 39.6
- Final value
- 3156.25
- Profit
- 1156.25
- Return (%)
- 57.81
Dollar cost averaging means buying a fixed dollar amount of an asset at regular intervals, no matter the price. This calculator takes your per-purchase amount and the price at each buy, then shows how many shares you accumulated, your blended average cost, and where you stand at the most recent price.
How this is calculated
Each buy spends the same fixed dollar amount, so the shares bought at a given price are that amount divided by the price. Adding the shares from every buy gives total shares, and total invested is the per-purchase amount times the number of buys. Average cost is total invested divided by total shares, and final value uses the most recent price times the shares you hold.
How to use
- Enter the dollar amount you put in at each purchase.
- Enter the price at each buy as a comma-separated list, oldest first.
- Read your total invested, total shares, and blended average cost.
- Check the final value and return based on the most recent price.
Examples
- $500 per buy at 50, 40, 25, 62.5:
average cost $39.60, return 57.81% - $100 per buy at a flat 10:
average cost $10.00, return 0%
FAQ
- What is dollar cost averaging?
- Dollar cost averaging is investing a fixed dollar amount on a set schedule regardless of price. You buy more shares when prices are low and fewer when prices are high, which smooths out the cost of entering a position over time.
- How is average cost computed?
- Average cost is your total invested divided by your total shares. Because each buy spends the same dollar amount, lower prices add more shares, which pulls the blended average cost below a simple average of the prices.