Calculator
Your files never leave your device
Check your Network tab and see
Work starts the moment you drop a file
No daily limit, no sign-up, no watermark
The step count is the total floor-to-floor height divided by the height of one riser, rounded up. It sizes a straight flight quickly from two measurements.
Comfortable and legal stairs also constrain the tread depth and the riser height within building-code limits, which this does not verify. Use it to plan, then confirm dimensions against the applicable code.
That is the promise behind every tool here. Files are read in your browser tab, processed there, and discarded when you close it — never uploaded to our servers.
