Roof geometry workbench
Measure the slope. See the working.
Convert roof pitch, solve right triangles and estimate surface area with figures you can follow—no account and no black box.
Live calculator
Rise + run → pitch
Both measurements convert together when the unit changes. The pitch ratio itself is unit-independent.
Connected tools
Start with what you know.
Convert pitch, solve the triangle, calculate supported area, then carry checked geometry into a material or multi-section record.
Calculate roof pitch from rise and horizontal run, with angle, percentage and slope multiplier.
Open tool →RF—02Roof Pitch ConverterConvert rise per 12, degrees, percentage slope and slope multiplier without changing geometry.
Open tool →RF—03Rafter Length CalculatorCalculate common-rafter line length from horizontal run or symmetrical gable span and roof pitch.
Open tool →RF—04Roof Area CalculatorEstimate sloping surface area for supported simple gable, shed and direct plan-area forms.
Open tool →RF—05Roof Slope Factor CalculatorCalculate the slope multiplier used to convert compatible plan area or run to sloping values.
Open tool →RF—06Rise Run CalculatorSolve supported right-triangle pairs for rise, run, slope length and angle.
Open tool →RF—07Roof Material EstimatorApply editable waste and visitor-supplied product coverage after calculating roof area.
Open tool →RF—08Multi-section Roof WorkbenchCombine labelled supported roof sections, save locally and export an auditable geometry record.
Open tool →A checkable record
One roof. Separate measured sections.
Label each supported plane, keep every pitch and plan area visible, and export the calculation with its assumptions. RoofFigured does not infer unknown complex geometry.
Open the multi-section workbenchSafety boundary
Calculate without climbing.
Use drawings, ground-level measurements, safely accessible interior information or dimensions supplied by a competent professional. A calculator is not a reason to access a roof.
RoofFigured explains geometry only. It does not size structural members, approve a design, interpret building codes or prescribe installation.
Read the roof-safety boundary →