Observed arrival · 2026-10-06

Calcitect: dimensional math for the jobsite

calcitect.com Visit website

Editorial interest 80/100 Selection signal · not a rating of the site

A free set of construction calculators for feet, inches, fractions, metric conversions, material quantities, and related measurements.

Landing page captured for the 2026-10-06 issue.

For: Builders and estimators working in feet and inches
Worth noticing: Its notation guidance distinguishes tight drawing-style `5'-3 1/2"` from spaced `5' - 3 1/2"`, which it reads as subtraction.

Field notes

Users can enter feet, inches, fractions, decimals, or metric lengths; the page says answers update as they type and can be displayed in five formats, including millimeters. Separate calculators cover roof pitch, stairs, spacing, concrete quantities, aggregate volume, and drawing scale. Two California finders are aimed at public-school/community-college and hospital/skilled-nursing projects, and accept a topic, document number, or pasted plan-review comment.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

One card from the complete issue

Original Bugs Included

353,261 arrived 1,000 judged 990 catalogued Enter the complete issue