Free browser tools
Same ContractorHQ quality bar as the rest of the site: quick pages, clear outcomes, no paywall for the basics. Each tool lives on its own URL so you can bookmark or share it.
Privacy: these utilities are built to do their job in the browser. We do not send your inputs to an AI API to get an answer — so your numbers and text stay on your device unless a specific tool says otherwise.
Pick a tool
Roofing bundle calculator
Squares, waste and bundles per shingle spec — order-of-magnitude for crews and quotes.
Open toolHVAC duct sizing estimator
CFM and face velocity to a round duct size sketch — teaching aid, not Manual J.
Open toolLabor burden & bill rate
Loaded tech cost and a bill rate that hits your margin on labor — local math, not payroll software.
Open toolGood / better / best proposals
Three tiers, prices and bullets to markdown for tablet walkthroughs.
Open toolMulch & gravel volume
Length × width × depth to cubic yards or m³ — for beds, stone and bulk orders.
Open toolVoltage drop calculator
AWG, amps, one-way feet and volts — rough I×R drop for field chats, not NEC stamps.
Open toolHot water wait calculator
Pipe size, length and fixture GPM — cold slug gallons and seconds to purge.
Open toolTile & flooring waste
Net area plus pattern waste presets and optional cushion — order square feet.
Open toolDumpster volume estimator
Count bulky items → cubic feet and a roll-off size talk track for junk jobs.
Open toolService job breakeven
Material, labor, trip and margin — minimum ticket price for one job snapshot.
Open toolMarkup vs margin visual
Stacked bar: how much of the sell dollar is still cost vs profit at your markup.
Open toolPaint coverage calculator
Room shell, opening deduct and coverage per gallon — gallons for one coat.
Open toolSeasonal cash flow planner
Peak vs slow months and fixed overhead — crude annual cash gap whiteboard.
Open toolConstruction waste factors
Lumber, drywall or trim with pro vs beginner waste — order quantity multiplier.
Open toolPermit time estimator
U.S. heuristic week ranges by common residential scope — not live AHJ data.
Open toolSoftware cost calculator
Team size, trade and features in — Jobber, Housecall Pro and ServiceTitan pricing out, with a clear pick.
Open toolCharacter & word counter
Live counts for characters, words and lines — full width on your phone, nothing uploaded.
Open toolMarkup calculator
Cost plus markup to sell price, profit and margin on price — thumb-friendly inputs.
Open toolJSON formatter
Validate and pretty-print JSON — stacked editor on mobile, side by side on desktop.
Open toolYouTube timestamp links
Build shareable watch URLs that jump to an exact minute and second.
Open toolWorking days calculator
Count Monday–Friday days between two dates — native pickers on iOS and Android.
Open toolWhatsApp link & QR
wa.me links with optional message plus a QR you can screenshot — generated locally.
Open toolPrivacy text redactor
Mask emails and phone-like patterns before pasting drafts into other tools.
Open toolUnit converter
Length, weight and temperature from one base number — offline after load.
Open toolTip calculator
Bill, presets, slider and even split — thumb-friendly on phones.
Open toolPercentage calculator
Percent of, part-to-whole, and percent change — three modes, two fields.
Open toolURL slug generator
Headlines to clean hyphen slugs for URLs and files — ASCII folding.
Open toolSocial snippet splitter
Long post to short blocks with soft breaks — X, Bluesky or long-form presets.
Open toolMeeting notes to tasks
Pull bullets, checkboxes and Action:/Todo: lines into a numbered list.
Open toolBrowser micro-benchmark
Tiny JS loop timings — median of several runs, curiosity not a lab score.
Open toolSales tax calculator
Forward or reverse math with your own combined rate — not filing advice.
Open toolHTML accessibility checker
Paste markup — quick alt, label and vague-link heuristics before a real audit.
Open toolProduct description builder
Trade-focused paragraph template from fields — edit before you publish.
Open toolURL safety checker
Parse links for protocol, host and simple red flags — no remote malware scan.
Open toolCode metrics analyzer
Lines, TODO/FIXME and console.log counts on pasted source — regex level.
Open toolAd spend loss estimator
What-if wasted spend from assumed invalid clicks and a blended CPC.
Open toolCurrency converter demo
Static USD-bridged rates for six currencies — demo only, not live FX.
Open toolTranscript to social chunks
Blank-line paragraphs to social-sized chunks — no summarization.
Open toolTrade email template builder
Estimate follow-up, schedule confirm, invoice sent — plain text copy out.
Open toolcURL command parser
Extract method, URL and -H headers from docs examples — never executes.
Open toolLooking for the full software directory (Jobber, ServiceTitan, etc.)? All contractor software tools
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