What does the Stair Calculator work out?

Rise, run and step count for a staircase. It is one of the Everyday & Tech tools on Mondo Knows.

How is the Stair Calculator calculated?

You get an instant answer with the working shown underneath.

Do I need to sign up, and is my data stored?

No sign-up, and nothing you type is sent anywhere. The calculation runs in your own browser, so the figures stay on your device and the page works offline once loaded.

Mondo Knows Tools

Stair Calculator

Rise, run and step count for a staircase. Use the free stair calculator below to get an instant answer, with the formula shown so you can check the maths and trust the result. Free, private, and no sign-up.

Total rise

Target step rise

Tread run

Mondo says

Number of steps

15

Actual step rise7.2 in

Total run140 in

Stringer length14.73 ft

A rise between 7 and 7.75 inches and a run of about 10 inches is comfortable for most people.

Stair Calculator: common questions

What does the Stair Calculator work out?: Rise, run and step count for a staircase. It is one of the Everyday & Tech tools on Mondo Knows.
How is the Stair Calculator calculated?: You get an instant answer with the working shown underneath.
Do I need to sign up, and is my data stored?: No sign-up, and nothing you type is sent anywhere. The calculation runs in your own browser, so the figures stay on your device and the page works offline once loaded.

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Estimates for general guidance only. This is not financial, medical or legal advice. Everything runs in your browser and nothing you type is stored.