How to use the Stock Split Calculator

Calculate the new share count and theoretical per-share price after a forward or reverse stock split.

Calculation formula

New share count = old count × (new units ÷ old units); theoretical new price = old price ÷ (new units ÷ old units).

Recommended steps

1. Enter values using the units shown beside each field.
2. Review whether the example assumptions match your situation.
3. Run the calculator and compare the key metrics.
4. Use the source data or official rates when precision matters.

Known limitations

Pure split-ratio arithmetic without market moves, fractional-share cash settlement or taxes. Total investment value is unchanged by the ratio alone.