Dollar-Cost Averaging Calculator
Shows your average cost when you invest the same amount at each price.
Your average cost per share
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Share sends a link that reopens these numbers. Copy details pastes the full breakdown as a list.
Simple average of the prices —
Shares bought —
Total invested —
Value at the last price —
Reading this —
The formula
average cost = total invested ÷ total shares
This is the harmonic mean of the prices, which is always at or below their simple average.
What to watch out for
It lowers the risk of investing everything at a bad moment. It does not guarantee a profit.
Frequently Asked Questions
Does dollar-cost averaging beat a lump sum?
In a rising market a lump sum usually wins, because more money is invested for longer. The lump sum calculator compares the two at a steady return.