Stair Calculator — Free Staircase Planning Tool with Diagram

Stairs — one of the main features in the house, it helps to easily move between floors. Correct calculation of this construction directly affects the safety of the residents.

Stair calculators by stair-calc.com are used to accurately estimate the dimensions and create detailed plans. After the calculations, you will only have to transfer the information print out the finished layouts and begin building. All program functionality is fully free.

How to Calculate Staircase Dimensions and Designs?

Our online calculators with plans are developed for beginner masters who want to build stairs with their own hands. But this does not mean that professionals will not find them useful. Automated calculation excludes errors in calculations and most accurately prepare working plans for the wooden staircase.

Staircase Planner works with the following types of wooden staircases:

  • Straight Stairs
  • L-Shaped Stairs (90 degrees)
  • U-Shaped Stairs (180 degrees)
  • Winder Stairs
  • Landing Stairs

In addition to the correct calculation of the rise and run, going, angle (slope), the program calculates all elements of the staircase, including stringers, steps, and treads.

Main recommendations when calculating the stairs

  • Note stair angle, comfortable for walking is considered 30-40 °. If you increase the angle, it becomes difficult to rise, especially for older people.
  • The optimal step height for walking is 15-20 cm. Determine this value, and you will know the riser height.
  • The step width of the stairs is accepted to take in the range 27-32 cm. Take into account the specifics of the standard store tread, they are usually made at the factory and have a standard width of 30 cm.
  • Nosing wooden steps no more than 5 cm, otherwise the descent will be difficult.
  • Consider stair width and distance between flights, based on fire safety and comfort. Usually for a comfortable rise for one person the stair width should be 90-120 cm.

Using this stair calculator online, follow these recommendations, because this directly affects the quality of operation, as well as safety equipment in the future.