To convert acres into square feet, simply multiply the number of acres by the conversion factor of 43,560. Using this equation, 1 acre equals approximately 43,560 square feet.

**Set up the equation**The formula for finding the number of square feet in an acre looks like this: ft² = ac x 43,560.

**Enter the variables**The next step is to enter in the number of acres to convert to feet: ft² = 2.5 x 43,560.

**Solve the equation**The final step is to solve the equation for feet squared: 2.5 x 43,560 = 108,900ft². Therefore, 2.5 acres equals 108,900 square feet.