Comfortable stairs: rise 7 to 7.5 inches, run 10 to 11 inches. Comfort formula: 2 x rise + run equals 24-25 inches. Number of treads equals risers minus one. Maximum rise per code typically 7.75 inches, minimum tread 10 inches.
Quick Tips
- Always order 10-15% extra materials for waste
- Check local building codes before starting
- Measure twice, cut once — verify all inputs
Frequently Asked Questions
Rise: 7-7.5 inches, run (tread): 10-11 inches for comfortable, safe stairs.
2 x rise + run = 24 to 25 inches. Example: (2 x 7) + 11 = 25 inches.
Code maximum typically 7.75 inches. Ideal 7-7.5 inches for comfort.