Craftmetry

Craftmetry turns construction sizing tables and everyday jobsite math into fast, practical field tools for contractors, tradespeople, and serious DIYers.

TOOLS INCLUDED

Stair Calculator
Calculate risers, treads, stair count, total rise, and layout. Review a detailed stringer-cut diagram and save named calculations.

Square-Up Calculator
Use the Pythagorean theorem to find a diagonal or missing side for square layouts and right triangles.

Gas Line Sizing
Quick-size natural gas and propane lines, or build a visual piping system with appliances, BTU loads, pipe lengths, and longest-length sizing guidance.

Waterline Sizing
Estimate PEX-A supply sizing from fixture demand or direct flow, and lay out separate hot and cold systems.

Deck Joist Sizing
Check common deck-joist sizing based on span, spacing, species, grade, and loading assumptions.

Voltage Drop & Wire Size
Estimate voltage drop or find a wire size that satisfies selected voltage-drop and ampacity limits.

Save supported calculations and layouts on your device. Account sign-in can sync supported saved work and subscription access across Craftmetry on iPhone, iPad, and the web. Sign in to use web access, sync, or the account preview.

Craftmetry provides reference calculations, not engineering or code-compliance approval. Always verify final designs with local codes, manufacturer specifications, and qualified professionals when required.

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