Stock Split Calculator
See exactly how a stock split affects your position with our free calculator. Enter your shares owned, current price, and the split ratio to find your new share count, adjusted price per share, and verify your total position value remains unchanged.
A stock split increases the number of shares outstanding while proportionally reducing the price per share. In a 3-for-1 split, each shareholder receives 3 shares for every 1 share held, and the price per share becomes one-third of the pre-split price. The total value of your position does not change. If you owned 100 shares at $300 ($30,000 total), after a 3-for-1 split you own 300 shares at $100 ($30,000 total).
Companies split their stock to make shares more affordable and accessible to retail investors. High per-share prices can be a psychological barrier, and some brokerages historically did not support fractional shares. Major companies like Apple, Tesla, Amazon, and Google have all executed stock splits when their prices climbed to high levels.
A reverse stock split works in the opposite direction: in a 1-for-10 reverse split, every 10 shares become 1 share at 10 times the price. Reverse splits are often done by companies with very low share prices to avoid being delisted from stock exchanges, which typically require minimum price thresholds. Unlike forward splits, reverse splits are generally viewed negatively by the market.