Free contractor calculators & tools
Field and pricing tools for HVAC, plumbing, and electrical contractors. Every one is free, runs in your browser, and needs no signup or email — useful whether or not you ever try CrewConductor.
HVAC field tools
For techs on the truckR-454B & R-32 minimum room size and max charge, US-code (UL 60335-2-40 / ASHRAE 15.2). The check you need before a field charge.
Enter saturation and line temps — get superheat, subcooling, target ranges, and an undercharge / overcharge / restriction diagnosis.
Parts, labor, tax breakdown, payment terms — download an invoice PDF in 30 seconds. No signup.
Plug in revenue, materials, and labor — see gross margin, net margin, and what to charge to hit your target.
Pricing & business tools
For the officeBuild a defensible quote from time, parts, overhead, and target margin.
Convert between markup and margin. See selling price for any cost and target.
How much of your tech's paid time is billable — and what idle time is costing you.
Fill in line items, download a clean estimate PDF. No signup. Saves your business info for next time.
More field tools for plumbing and electrical are on the way. Looking for one we don't have yet? Tell us what to build →
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Disclaimer: All free tools on this page are provided for general informational and educational purposes only, "as is" and without warranty of any kind, and you use them at your own risk. They are not engineering, compliance, financial, or professional advice, and they do not replace manufacturer instructions, code requirements, or your own professional judgment. See our Terms of Service.