Stock Split Calculator

Calculate your new shares and price after a stock split

Stock Split Calculator

Calculate your new share count and price after a stock split

What is a Stock Split Calculator?

A Stock Split Calculator is an essential tool for investors to accurately determine their new share count and adjusted price after a stock split occurs. This calculator helps investors understand how their stock holdings will be affected by various types of stock splits.

The Stock Split Calculator maintains the principle that while a stock split changes the number of shares and price per share, it does not affect the total market value of your investment holdings.

Stock Split Calculation Method

The Stock Split Calculator uses these precise formulas:

Core Stock Split Calculations:

  • New Share Count = Original Shares × (Split Ratio Numerator ÷ Split Ratio Denominator)
  • New Share Price = Original Price × (Split Ratio Denominator ÷ Split Ratio Numerator)
  • Total Market Value = Original Shares × Original Price (remains constant)

Common Stock Split Ratios

Popular Stock Split Ratios:

  • 2:1 Stock Split: Doubles shares, halves price per share
  • 3:1 Stock Split: Triples shares, reduces price to one-third
  • 4:1 Stock Split: Quadruples shares, reduces price to one-fourth
  • 5:1 Stock Split: Quintuples shares, reduces price to one-fifth

Understanding Reverse Stock Splits

The Stock Split Calculator also handles reverse stock splits (like 1:2 or 1:3), where the number of shares decreases and the price increases proportionally. Companies typically implement reverse splits to boost their stock price or meet exchange listing requirements.

Stock Split Calculator Examples

Example Stock Split Calculations:

2:1 Stock Split Example:

  • Original Position: 100 shares at $50 each ($5,000 total)
  • After Split: 200 shares at $25 each ($5,000 total)

3:1 Stock Split Example:

  • Original Position: 100 shares at $60 each ($6,000 total)
  • After Split: 300 shares at $20 each ($6,000 total)

Benefits of Using Stock Split Calculator

  • Instantly calculate new share counts and prices after any stock split ratio
  • Verify that total investment value remains unchanged
  • Plan for both forward and reverse stock splits
  • Make informed investment decisions with accurate calculations