Common Rafter Length Calculator (Metric Units)
This calculator determines the length of a common roof rafter using metric units. By entering the run (in metres) and pitch (as a rise in 12), the diagonal length of the rafter is calculated. An optional overhang can be added to include the eave extension.
To calculate rafter length in feet and inches, use the
Common Rafter Length Calculator (Imperial).
Hip Roof Sheathing Calculator (Metric)
- Calculates plywood sheets based on building size, pitch, and overhang in metric.
Planning a hip roof project using metric dimensions? Try the
Hip Roof Area and Slope - Metric
- input dimensions and pitch to get full roof geometry.
Rafter Length - Metric
Calculator
- building width in metres
- overhang in millimetres
- ridge board thickness
- roof slope in degrees
Results
- roof pitch (rise in 12 inches)
- length of the rafter in metres
- length of the rafter in millimetres
Roof Framing
- Birdsmouth Cut, The Heel
- Birdsmouth: Heel Cut, Seat Cut
- Birdsmouth Seat Cut
- Convert a Roof Pitch to an Angle
- Heel Cut of a Birdsmouth
- Heel Cut Length (Metric)
- Height Above Plate (HAP) with Heel Cut Depth
- Height Calculation for a Common Truss
- Rafter Length
- Rafter Length (Metric)
- Rafter Length Calculated in Metres (with rise, run, post height, birdsmouth)
- Rafter Lengths, Hip and Common
- Rafter Length (with rise, run, post height, birdsmouth)
- Roof Measurement
- Roof Pitch
- Roof Sheathing - Gable (Imperial)
- Roof Sheathing - Gable (Metric)
- Roof Sheathing - Hip Roof (Imperial)
- Roof Sheathing - Mansard (Imperial)
- Roof Sheathing - Shed (Imperial)
- Slope, Roof, Hip Valley, Height and Width Factors