Enter your current number of shares, share price, and split ratio (e.g. 2-for-1) to see your new share count, new price per share, and total portfolio value after a stock split or reverse split. Works for both forward splits and reverse splits. Also try the use the Crypto Profit Calculator.
New Number of Shares
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New Price Per Share
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Total Portfolio Value (Unchanged)
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Original Shares
Original Price Per Share
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Split Ratio Applied
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A stock split is a corporate action where a company increases the number of its outstanding shares by dividing each existing share into multiple shares. The total market value of all shares remains the same — the company is essentially slicing the same pie into more pieces. For example, in a 2-for-1 split, a shareholder with 100 shares at $50 each ends up with 200 shares at $25 each. See also our find PEG Ratio with PEG Ratio Calculator.
Multiply your current number of shares by the split ratio factor. The split ratio factor is the numerator divided by the denominator. For example, in a 3-for-1 split, the factor is 3/1 = 3, so 100 shares becomes 300 shares. In a 5-for-2 split, the factor is 2.5, so 100 shares becomes 250 shares.
Divide the current share price by the split ratio factor. If the split ratio factor is 2 (a 2-for-1 split), a $100 share becomes $50. This ensures the total value of your holdings remains unchanged after the split.
A reverse stock split reduces the number of outstanding shares while proportionally increasing the price per share. For example, in a 1-for-10 reverse split, every 10 shares you own become 1 share, and the price increases tenfold. Companies often use reverse splits to boost a low share price, sometimes to meet stock exchange listing requirements. You might also find our Stock Calculator useful.
No — a stock split does not change the total value of your investment. Whether you have 100 shares at $50 or 200 shares at $25 after a 2-for-1 split, your total holding value remains $5,000. The split only adjusts the quantity and price per unit proportionally.
To calculate your new cost basis per share after a stock split, divide your original total cost basis by the new number of shares you hold. For example, if you paid $5,000 for 100 shares and went through a 2-for-1 split to get 200 shares, your new cost basis per share is $5,000 / 200 = $25 per share. The total cost basis itself does not change.
After a stock split, the dividend per share is typically adjusted proportionally so that the total dividend payout remains the same. For example, if a company paid $1.00 per share dividend and a 2-for-1 split occurs, the dividend per share would become $0.50, but since you now have twice as many shares, your total dividend income stays the same.
A reverse stock split can sometimes signal financial trouble, as companies often use them to artificially boost a falling share price and avoid delisting from a stock exchange. However, it is not always negative — some companies use reverse splits as part of a broader restructuring strategy. Investors should look at the company's fundamentals rather than the split alone.