Missed Call Cost Calculator
Quantify the revenue HVAC, plumbing, and electrical shops lose when calls go unanswered — enter your call volume, miss rate, booking rate, and average job value with trade-specific defaults.
Free Electrical Business Tools
Free calculators, templates, and generators built for Electrical contractors. Price jobs, download documents, and grow your shop without paying for generic software.
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Wire Size Calculator
Size copper or aluminum conductors per NEC Table 310.16 ampacity — with ambient temperature correction, bundling derating, voltage drop check, OCPD recommendation, and equipment grounding conductor per Table 250.122.
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26 of 26 tools
Calculators
Math-based tools for pricing, margins, overhead, and technical sizing.
Profit Margin Calculator
Calculate net profit per electrical job including materials and labor.
Labor Rate Calculator
Calculate your fully loaded billable hourly rate — base wage, payroll burden, workers’ comp, benefits, overhead recovery, and target net profit using the industry divisor method.
Job Pricing Calculator
Price HVAC, plumbing, and electrical jobs with cost-plus formulas — loaded labor, materials, overhead recovery, and target net margin using the industry divisor method.
Missed Call Cost Calculator
Quantify the revenue HVAC, plumbing, and electrical shops lose when calls go unanswered — enter your call volume, miss rate, booking rate, and average job value with trade-specific defaults.
Bid Calculator
Build a winning bid from the ground up — materials, labor, overhead, and profit margin — so every quote covers your true cost and hits your target margin.
Break-Even Calculator
Find the monthly revenue and jobs your electrical shop needs to cover all overhead and costs.
Wire Size Calculator
Size copper or aluminum conductors per NEC Table 310.16 ampacity — with ambient temperature correction, bundling derating, voltage drop check, OCPD recommendation, and equipment grounding conductor per Table 250.122.
Service Price Calculator
Set a flat-rate service price from your true cost — loaded labor, materials, overhead, and target margin — so every service call is priced for profit, not guesswork.
Voltage Drop Calculator
Calculate voltage drop over conductor run length using NEC Chapter 9 Table 8 — check drop percent, find minimum wire size, or maximum circuit distance for branch circuits and feeders.
Employee Cost Calculator
True hourly and annual cost of an electrician after payroll taxes, workers’ comp, benefits, and truck.
Equipment ROI Calculator
See if a bucket truck, tool, or machine pays for itself — payback period and return on investment.
Financing Calculator
Turn a panel upgrade or rewire into an easy monthly payment and compare total interest by term.
Markup & Margin Calculator
Turn part and material cost into the right sell price — convert markup to margin (and back) and stop underpricing every job.
Labor Cost Calculator
Find the total burdened labor cost for one job — loaded hourly cost (wage + burden) × hours × crew — and see labor as a percent of the job price.
Marketing ROI Calculator
Measure ROI, ROAS, cost per lead, and CAC on your electrical ad spend and lead sources.
Crew & Subcontractor Cost Split Calculator
Split one job’s revenue and cost across your crew, subcontractors, and materials — and see the margin you keep on each.
Business Valuation Calculator
Estimate what your business could sell for using the SDE × multiple method — with value drivers, a likely price range, and a revenue cross-check.
Conduit Fill Calculator
Check conduit fill against NEC Chapter 9 Table 1 — pick the raceway and trade size, add conductor rows, and get fill percentage, PASS/FAIL against the 53/31/40/60% limit, remaining capacity, and the minimum trade size that passes.
Ohm’s Law Calculator
Solve any two of voltage, current, resistance, and power using the complete 12-formula Ohm’s law wheel — enter what you know and get the rest instantly, with the formula used shown for each result.
Watts to Amps Calculator
Convert between watts, amps, and volts for DC, single-phase, and three-phase AC circuits — with a power-factor input and the √3 factor for three-phase, so the amperage matches real loads.
Conduit Bend Calculator
Calculate offset, 90° stub-up, and three-bend saddle marks for EMT hand bending — multiplier, shrink, take-up, and exact bend-mark locations for any depth and angle.
Motor FLA Calculator
Look up motor full-load amps from NEC Table 430.248 (single-phase) and 430.250 (three-phase) by horsepower and voltage, with 125% conductor sizing and branch breaker/fuse maximums.
Transformer Sizing Calculator
Size a dry-type transformer from connected load in kVA, amps, or kW — get the recommended standard kVA rating, primary and secondary full-load amps, NEC Table 450.3(B) overcurrent protection, minimum conductors, and spare capacity.
Box Fill Calculator
Calculate required box volume per NEC 314.16 — conductor fill by AWG, cable clamps, fixture studs, device yokes, equipment grounds, and terminal blocks — then check it against Table 314.16(A) volumes or your box’s marked volume.
Generator Sizing Calculator
Size a standby generator from a real load list — total running watts, peak starting watts with the largest motor started last, required kW and kVA, the next standard genset rating, and transfer switch amps.
Electrical Load Calculator
Calculate a dwelling service load per NEC 2023 Article 220 — standard method (220 Part III) or optional method (220.82) — with Table 220.45 lighting demand, Table 220.55 cooking demand, dryer and fastened-appliance factors, heating vs A/C largest-of, EVSE, and the recommended service size.
Why Electrical contractors need the right tools
Electrical contractors juggle emergency calls, seasonal demand, flat-rate pricing, and crew scheduling — often from the cab of a service truck. Free tools help you quote faster, document consistently, and spot margin problems before they show up on your P&L.
CloseCrew built these electrical resources for shops that want to look established from day one. Run the missed call cost calculator to see what voicemail is costing you. Download templates your techs will actually use. Then let Larry handle inbound calls while you focus on the work.
Related resources for Electrical contractors
Templates, articles, and product pages that pair with these tools.
Business Templates
Free downloadable documents for electrical contractors.
Browse templatesContractor Blog
Guides on pricing, hiring, marketing, and operations.
Read guidesElectrical Licensing
State licensing requirements, exams, and renewal rules for electrical contractors.
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See how Larry answers calls and books jobs for your team.
Get a demoElectrical tools FAQs
Is this closecrew tool free for Electrical contractors?
Yes. Every tool on CloseCrew is free to use. We built it for electrical contractors who need professional business resources without paying for generic software.
Do I need an account to use this tool?
No account is required to run calculators or try generators. Some downloads may ask for your email so we can send you a copy — you can unsubscribe anytime.
Can I use this for my Electrical business?
Absolutely. Enter your own numbers, customize templates with your logo and pricing, and use the results in your daily operations.
Does CloseCrew work with these tools?
Many contractors use CloseCrew tools alongside Larry, your AI receptionist, to stay organized while every inbound call gets answered. Tools help you quote smarter; Larry helps you capture every lead.
