Roof Truss Calculator

Roof Truss Calculator

Sizes any truss in seconds.

About

A roof truss calculator is a planning tool that works out truss height, member lengths, truss count, and lumber quantity from your building span, roof pitch, and chosen truss type. Enter those three numbers and the calculator applies standard rise-over-run geometry to determine how tall the peak sits above the top plate, how long each chord and web member needs to be, and how many trusses your building length requires.

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Tastemaker
Tastemaker

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Roof Truss Calculator - A roof truss calculator that sizes any truss in seconds.

Roof Truss Calculator is a free browser-based planning tool for sizing and comparing roof trusses. Users can choose from 11 truss shapes, enter span, pitch, overhang, spacing, building length, loads, and material details, then get chord lengths, peak height, truss count, lumber cut lists, weight, live diagrams, and estimated installation costs. It supports imperial and metric inputs and is useful for builders, estimators, DIYers, and students.
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