Dollar-Cost Averaging Calculator
Estimate shares purchased, average cost, and ending value from investing a fixed amount over time.
- Last reviewed
- July 8, 2026
- Cost
- Free to use
- Data
- Runs in your browser
Total Invested
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Shares Purchased
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Average Cost Per Share
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Ending Value
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Gain or Loss
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Methodology
How this calculator handles inputs
This calculator uses the values you enter above and applies the formula explained in the guide below. Results update in the browser and are intended for quick planning, comparison, and sanity-checking.
- Use consistent periods, currencies, and units across inputs.
- Review any assumptions before using the result in a decision.
- Recalculate when rates, prices, tax rules, or business terms change.
Important note
This tool provides general planning information only. It is not tax, legal, financial, accounting, or investment advice. Check the current rules for your location and speak with a qualified professional before making a high-stakes decision.
Guide
How it works
Use this calculator to estimate the result of investing a fixed amount over time.
What this calculator does
The dollar-cost averaging calculator estimates total invested, shares purchased, average cost per share, ending value, and gain or loss.
Dollar-Cost Averaging Formula
Shares Purchased = Periodic Investment / Share Price
The calculator repeats this across each investing period and totals the shares.
Example calculation
If you invest 500 per month for 12 months while the share price moves from 80 to 100, the calculator estimates the average cost and ending value.
When to use this calculator
- comparing regular investment plans
- estimating average cost basis
- modeling gradual investing
- understanding how changing prices affect shares purchased
FAQs
What is dollar-cost averaging?
Dollar-cost averaging means investing the same amount at regular intervals instead of investing all at once.
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