Stock Split Calculator
Calculate forward or reverse split shares and cost per share while preserving total cost.
Illustrative example result
200 theoretical shares at 25 cost per share; total cost 5,000 in your input currency.
| Before split | 100 | 50 | 5,000 |
| After split | 200 | 25 | 5,000 |
How to read these results
Formula & calculation basis
Post-split shares = original shares × new shares / old shares. Post-split cost per share = original cost per share × old shares / new shares. Total cost is unchanged before rounding.
Coverage & limitations
Fractional shares are theoretical. A broker may settle fractions in cash under its own terms. The calculation assumes no price movement, fees or tax adjustment and is not a forecast of trading price.
Sources & update policy
Example inputs are synthetic and are not company data or a forecast. The formula version is dated 2026-10-28. Calculations do not fetch market data.
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