Blue Collar Toolbox

Built for the jobsite. Keep calculators, job notes, photos, plans, files, time cards and quick bids together in one powerful contractor toolbox.

Blue Collar Toolbox — Built for the Jobsite. The all-in-one calculator and productivity app for contractors, tradespeople, and field professionals. Stop doing math on scraps of paper. Get the right answer fast, every time. CALCULATORS FOR EVERY TRADE Over 60 professional calculators across 9 categories — Measurement, Framing, Structural/Beam, Concrete, Roofing, Survey/Layout, Materials, Electrical, and HVAC. From stair stringers to voltage drop, roof pitch to concrete yards, every calculation you need is one tap away. QUICK BID — ESTIMATE ON THE SPOT Build professional estimates right on the jobsite. Add labor lines, materials, set your markup, calculate tax, and generate a clean PDF in seconds. Send bids by text, email, or share directly from your phone. TIME CARD & JOB TIMER Clock in and out by job. Track regular hours, breaks, and overtime. See your pay calculated in real time. Export your time log when the job is done. BUILT FOR THE FIELD     •    Works 100% offline — no internet required     •    No account or login needed     •    Pay once, use forever — no subscription     •    Favorites — pin your most-used calculators for instant access     •    Fraction keyboard — work in feet, inches, and fractions like a real tape measure PRO UNLOCK — $14.99 ONE TIME Unlock all calculators, Time Card, Quick Bid, job saving, favorites, and every future tool added to the app. One payment, no recurring fees. Whether you’re a carpenter, framer, concrete contractor, electrician, HVAC tech, roofer, or plumber — Blue Collar Toolbox is the only calculator app built the way you work.