Grade-Curve Scaler

Flat-add, square-root, or linear rescale-to-target-mean grade curve, clamped to [0, 100]. Estimate only; the instructor's gradebook governs.

Run the calculator

Formula and source

Flat: new = raw + k. Square-root: new = 10 * sqrt(raw). Linear rescale: a = (100 - target)/(100 - mean), b = 100(1 - a), new = raw*a + b (class mean -> target, 100 anchored at 100). All clamped to [0, 100].

Standard psychometric score-scaling methods (flat, square-root, linear rescale), by practice.

Audience

This tile is built for trades and the adjacent professions in the Educators and K-12 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.