Trader tools
Buy a fixed amount on a schedule. See average cost, units bought and how it compares with buying all at once.
The same dollar amount every time.
Whole number, 1 to 520.
Results appear here as you type.
Still needed: amount per buy, number of buys, start price, end price
Each buy turns a fixed dollar amount into amount / price units. Cheap prices buy more units than expensive ones.
Your average cost is total invested / total units. This is a weighted average, not the simple average of the prices, which is why it sits closer to the lower prices.
The straight-line option draws prices evenly from the first to the last price. Real markets move in a jagged way, so use your own prices if you want to replay a specific period.
The lump-sum comparison assumes you put the whole total in at the first price. It uses only the prices you provided.
Educational use only, not financial advice. This calculator works only from the numbers you type. It does not use live prices and it cannot predict what a market will do.
