Pipe Slope Marker Calculator is an offline utility for installation, renovation, and repair work sites. It helps quickly calculate slope layout data for drain pipes, cable trays, guide rails, and similar runs. Enter start elevation, end elevation, horizontal distance, or target slope to automatically convert marker heights for each measuring point. You can also generate support, clamp, or hanger position tables at fixed spacing to reduce manual calculation errors. The app supports millimeter, centimeter, and meter units, common slope templates, local project records, reverse slope calculation, error warnings, and elevation difference checks. All data is stored only on your device. No login, no internet connection, and no personal data collection are required.