To calculate the equity in your home, simply find the difference in value between your home and your mortgage balance. For example, if your home is currently worth $450,000 and you have a mortgage balance of $175,000, then you’ll have $275,000 worth of equity. You can take this a step further and check your LTV ratio by dividing your mortgage balance by your home value and multiplying it by 100 (175,000/450,000 x 100 = 38.8%).