A Stair Slope Calculator is a small tool that tells you how steep a stair is. It uses the rise and the run. You enter step height and step depth. The tool then gives slope and angle. It helps builders, teachers, and DIY people.
It will save time and stop guesswork. It uses simple math so you do not guess. It will check safety and comfort.
Why calculate stair slope now
A teacher is showing students a stair build. She is checking a stair where each rise is 7 inches and each tread is 10 inches. She wants to know if it is comfortable. She uses the tool. It gives clear numbers. The class sees how slope feels in real life.
Calculate the example step by step
First know the formula. Slope = rise ÷ run. Angle = arctan(rise ÷ run).
Now put numbers. Rise = 7 in. Run = 10 in.
Slope = 7 ÷ 10 = 0.7.
Then angle = arctan(0.7). Angle ≈ 35 degrees.
So the stair slope is 0.7 and angle is about 35°. Use a calculator for exact angle. This is quick. It is clear.
FAQs
Q: What units work? A:
Use the same units for rise and run.
Q: Is 35° safe?
A: It is steep. Check local rules.
Q: Can I use metric?
A: Yes. Use cm or mm both.
Use the calculator for fast, safe checks. Or do a quick manual divide and then arctan for angle—this is the simple trick.