Stock Split Calculator
Estimate post-split share count, adjusted share price, and total position value after a stock split example.
Last Updated: May 2026Stock Split Formula
Example Stock Split Calculation
Suppose you own 100 shares at $50 and the company announces a 2-for-1 split. You would then own 200 shares at about $25 each.
The total position value stays about the same before and after the split. The split changes share count and share price, not the economic value by itself.
- Enter shares owned.
- Enter the current share price.
- Enter the split ratio.
- Review the adjusted share count and price.
Stock Split Example Table
This table compares common forward and reverse split formats.
| Split Type | Original Shares | New Shares | New Price |
|---|---|---|---|
| 2-for-1 | 100 | 200 | $25.00 |
| 3-for-1 | 100 | 300 | $16.67 |
| 1-for-5 reverse | 100 | 20 | $250.00 |
How to Interpret the Result
A forward split increases share count and lowers the price per share. A reverse split reduces share count and increases the price per share.
The calculator shows a simplified mechanical split adjustment and does not judge whether the split is positive or negative for the company.
What This Calculator Does Not Include
This calculator does not model taxes, fractional share cash in lieu, market reaction, split announcements, or corporate actions beyond the ratio entered.
It is a basic share math example only.
Stock Split FAQ
What is a stock split?
A stock split changes the number of shares outstanding and the price per share, usually without changing total value by itself.
Does a split increase my investment value?
Not by itself. A split mostly changes share count and price formatting.
What is a reverse split?
A reverse split combines shares into fewer shares at a higher price per share.
Are taxes included?
No. Taxes and brokerage effects are not included.
Can a split affect liquidity?
Yes. Market perception and trading behavior can change, but this calculator does not model that.
Is fractional share handling included?
No. Fractional share cash in lieu is not modeled.
This calculator is for educational stock split examples only and does not predict market impact.