Finance
Instant, private, and free
Stock Split Calculator.
Calculate post-split shares and price from a split ratio.
Set your values
Results update as you type.
FAQs
How does the stock split calculator work?
Enter the requested values to receive a deterministic result. No live market, tax, or jurisdiction data is inferred.
Use Cases
Plan for a stock split
Investors can use this calculator to see how many shares they will own and the new price per share after an upcoming split, helping them understand the impact on their portfolio.
Example: If you own 100 shares at $200 and a 2-for-1 split occurs, you'll have 200 shares at $100 each.
Compare pre- and post-split positions
Use the calculator to compare your current position with the post-split numbers, ensuring you understand that the total value remains the same.
Example: Check that 50 shares at $300 equals 150 shares at $100 after a 3-for-1 split.
Frequently Asked Questions
- What does the Stock Split Calculator do?
- It estimates the number of shares you will own and the new price per share after a stock split, while keeping the total value of your position unchanged. You input your current shares and price, and the split ratio (e.g., 2-for-1) to see the adjusted figures.
- How is the post-split share price calculated?
- The post-split price is calculated by dividing the current price per share by the split ratio. For example, in a 2-for-1 split, the price is halved. The calculator uses this to show the new price while maintaining the total value.
- Does a stock split change the value of my investment?
- No, a stock split does not change the total value of your investment. It only increases the number of shares while proportionally decreasing the price per share. The calculator demonstrates this by keeping the total position value constant.
Tips & Common Mistakes
Tips
- Enter the current price per share and the number of shares you own accurately to get precise post-split estimates.
- Know the split ratio (e.g., 2-for-1, 3-for-1) before using the calculator; it is essential for the calculation.
- Remember that a stock split does not affect the total value of your holdings, only the number of shares and price per share.
- Use the calculator to simulate different split ratios to see how they affect your share count and price.
Common Mistakes to Avoid
- Forgetting to input the correct split ratio, which leads to incorrect post-split share and price estimates.
- Assuming a stock split changes the total value of your investment, when in fact it preserves it.
- Using the calculator for reverse splits without adjusting the ratio direction, which can cause confusion.
Last updated: August 13, 2026