
Build Specs
Jobsite Trade Calculators
0 ratings
Free
In-App Purchases
About
Build Specs turns code charts and sizing tables into simple field tools. More than just a calculator, it helps you lay out residential gas and water systems, size decks, calculate stair rise and runs, and check voltage drop.
Tools included:
**Stair Calculator**
Calculate risers, treads, stair count, total rise, and layout. Includes a detailed stringer cut diagram.
**Gas Line Sizer**
Build a visual gas piping layout with fixtures, BTU loads, pipe lengths, and sizing guidance.
**Water Line Sizer**
Lay out a water supply system visually and estimate pipe sizing based on fixtures and run lengths.
**Deck Joist & Beam Sizer**
Check common deck joist and beam sizing based on span, spacing, and lumber type.
**Voltage Drop Calculator**
Estimate voltage drop using wire size, distance, amperage, and voltage.
Always verify final designs with local codes, manufacturer specs, and qualified professionals when required.
Terms of Use (EULA): https://corvora.app/buildspecs/terms
Privacy Policy: https://corvora.app/buildspecs/privacy
Show more
What's New in Build Specs
1.0.5
June 23, 2026
Adds metric support to the Stair Calculator, including metric measurements and stringer length guidance.
Subscription plans
Build Specs Pro
Unlock every jobsite calculator and reference tool.
$39.991 Year
7 Days trial









