Slope from Digital Level

Bidirectional between degrees, percent, and inches per foot.

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Formula and source

Bidirectional conversion: percent ↔ degrees ↔ inches per foot. tan(angle) = rise/run = pct/100; rise_in_per_ft = pct × 0.12.

Classical trigonometry.

Audience

This tile is built for electricians and the adjacent professions in the Cross-Trade Utilities group. The interactive calculator runs entirely in your browser. No account, no fee, no advertising, no tracking.

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Posture

Rough Logic answers the math question the working professional asks on the job. The site is a calm, fast, ad-free, account-free, ever-free reference. It does not interpret code. It does not replace the licensed professional. It does not store your inputs. The Authority Having Jurisdiction governs all installations and inspections.