Speed Square Pro

Speed Square Pro is a fast, easy-to-use construction calculator built for carpenters, contractors, builders, and DIYers. Get accurate jobsite calculations without wasting time doing the math by hand. Features include: • Common Rafter Calculator • Hip & Valley Calculator • Roof Pitch & Angle Calculator • Stair Layout Calculator • Rafter lengths and tail extensions • Plumb and cut angles • Stair riser and tread calculations • Simple, jobsite-friendly design Whether you're laying out rafters, checking roof pitch, or building stairs, Speed Square Pro puts essential construction calculations right in your pocket. Measure twice. Build once.

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