TB Logic: Construction

Tool Belt Logic is the calculator built for the

construction trades. Switch between a

clean Plain Calculator for everyday math

and a full Construction Mode that handles

feet, inches, fractions, and the formulas

you actually use on a job site.

CONSTRUCTION MODE

Work natively in feet, inches, and

fractions down to 1/32. Quick keys for 1/2,

1/4, 1/8, and 1/16 inch. Set your

precision from rough framing to cabinet

making and the display rounds accordingly.

Teach the calculator your crew's shorthand

- hoof for ft, hair for 1/8, gnat for 1/16,

kerf, tick - and it will translate as you

type.

AI CHAT ASSISTANT

Ask construction math questions in plain

English. Stud counts, rake walls, stair

layouts, footings, lumber, concrete - get

worked-through answers without leaving the

app. The assistant respects your selected

mode and gives trade-aware responses, not

generic chatbot answers. AI features are

opt-in.

BUILT-IN FORMULAS

Roof pitch and slope. Hip and valley with

irregular-hip support and cut angles.

Circles, triangles, and area calculations

with plan and elevation diagrams. Tap a

formula, fill in what you know, get the

answer plus a diagram you can reference on

site.

RECALLS, HISTORY, AND TAPE

Save common values as recalls and pull them

back with a tap. Every calculation goes

into your history. Tape mode shows your

math as a running ribbon you can scroll

through, share, or repeat with one tap.

OFFLINE-FRIENDLY

The calculator and formulas work without a

signal. AI chat needs internet, but

everything else keeps going when service

drops.

PRIVACY YOU CAN ACTUALLY READ

No account required. No name, email, or

phone. Your data is linked to an anonymous

device ID, not to you personally. AI

features are opt-in and clearly disclosed.

Local history and saved items stay on your

device.

Tool Belt Logic by Chill INC. Built for

the trades.