Stock Split Calculator

Calculate new share count and price per share after a stock split.
$

New Shares

200

New Price/Share

$100.00

Split Details

Before: Shares100
Before: Price$200.00
After: Shares200
After: Price$100.00
Total Value (unchanged)$20,000.00

Use the Stock Split Calculator above to calculate your results. Enter your values and see instant results — all calculations run in your browser.

Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.

How It Works

Our Stock Split Calculator helps you understand the immediate impact of a stock split on your portfolio. This tool will automatically determine your new total number of shares and the adjusted price per share. In 2026, with several tech giants like NVIDIA and Apple potentially considering further splits, understanding these mechanics is crucial for informed investment decisions.

The calculation is straightforward: for a stock split ratio of A:B (e.g., 2:1, 3:1), your original share count is multiplied by A and divided by B. Conversely, your original price per share is multiplied by B and divided by A. This ensures the total value of your investment remains unchanged immediately after the split.

Remember that a stock split doesn't change the underlying value of your investment; it merely divides it into more, smaller pieces. A common mistake is to view a lower share price post-split as a 'discount' without considering the increased share count. Always factor in the split ratio when comparing historical stock prices.

Example: Tesla's hypothetical 2026 5:1 Stock Split

  1. 1 Let's say you own 50 shares of Tesla (TSLA) at an average price of $300 per share in early 2026. Tesla announces a 5-for-1 stock split.
  2. 2 After the 5:1 split, your new share count will be 50 shares * 5 = 250 shares. Your new price per share will be $300 / 5 = $60 per share.
  3. 3 You now own 250 shares of TSLA, with each share valued at $60. Your total investment value remains $15,000 (50 shares * $300 = $15,000, and 250 shares * $60 = $15,000).
  4. 4 This example demonstrates how a stock split increases your share count and decreases the price per share proportionally, leaving your total investment value unchanged. This can make shares more accessible to a wider range of investors.

Source: SEC · Last updated: April 2026

Frequently Asked Questions

What happens to my shares in a stock split?
In a 2-for-1 split, your shares double and the price per share is halved. Your total investment value stays the same. For example, 100 shares at $200 become 200 shares at $100. Stock splits do not create or destroy value.
Is a stock split good or bad for investors?
A stock split is neutral in terms of value. However, splits can be positive signals because companies usually split when the stock price has risen significantly. Lower prices after a split may attract more retail investors, potentially increasing demand.
How does a reverse stock split work?
A reverse split reduces the number of shares and increases the price proportionally. In a 1-for-10 reverse split, 100 shares at $1 become 10 shares at $10. Reverse splits are often used to meet minimum exchange listing requirements and can signal financial trouble.

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