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Electrical Estimating: calculators, templates and guides.

Calculators, templates and guides for electrical and low-voltage estimators. Every calculator shows its formula, every template is a real download, and every guide is written for working estimators.

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Calculators

Electrical calculators

Conduit Fill Calculator: EMT & THHN (NEC Chapter 9)Free conduit fill calculator for EMT with THHN/THWN-2 conductors: percent fill vs. NEC Chapter 9 Table 1…Electrical Bid Calculator: Labor Units, Overhead & MarkupFree electrical bid calculator: material and labor units, labor factor, crew days, tax, overhead and markup…Electrical Estimating Labor Units & NECA Manual GuideHow electrical labor units work, what the NECA Manual of Labor Units is, and a free calculator to turn your…Solar Estimate Calculator: System Size, Panels & CostFree solar estimate calculator for contractors: size a PV system from annual kWh, sun hours and losses, then…Wire Size Calculator: Ampacity & Voltage Drop (NEC)Free wire size calculator: copper or aluminum, NEC 310.16 ampacity at 60/75/90 °C, 240.4(D) limits and…

Templates and downloads

Electrical templates and downloads

Electrical Bid Template & Proposal Form (Excel + Word)Free electrical bid template: Excel takeoff with labor units, labor factor, tax and markup to a bid price and…Panel Schedule Template (Excel) for Estimating & CheckingFree panel schedule template in Excel: 42 circuits, automatic phase assignment, multi-pole loads, phase…

Guides

Electrical guides

12 Causes of PDF Electrical Takeoff ErrorsTwelve common causes of electrical takeoff errors on PDF drawings: legends, similar symbols, scale,…Accubid Takeoff & Estimating: Notes for Electrical EstimatorsHow electrical estimators use Accubid-style takeoff and estimating: assemblies, labor units, on-screen counts.Conduit Takeoff: How to Take Off Electrical ConduitHow to do an electrical conduit takeoff: home runs, feeders, branch circuits, fittings, bends, supports,…Electrical Bid Proposal Example & Bid ExamplesAn electrical bid proposal example with every section explained: scope, base bid, alternates, inclusions,…Electrical Demolition Estimating: Make-Safe, Removal and Temp PowerHow to estimate electrical demolition: demo plans, make-safe and disconnects, device and fixture removal,…Electrical Estimating Methods and Costing for ContractorsElectrical estimating and costing methods: per-square-foot budgets, per-opening and assembly pricing,…Electrical Symbols Explained: Plan Symbols & MeaningsElectrical plan symbols explained for estimators: receptacles, switches, lighting, panels, low voltage and…Electrical Takeoff in Bluebeam: Counts, Runs and Markups List TipsHow to do an electrical takeoff and estimate in Bluebeam Revu: tool chest symbols, count tools, polylength…Fire Alarm Estimating: Devices, Wire, Labor & PricingHow to estimate a fire alarm system: device takeoff, panels and power supplies, wire and pathway, programming…Grounding and Bonding Takeoff for Commercial Bids (NEC Article 250)How to take off grounding and bonding for commercial electrical bids: electrodes, grounding electrode…How to Do an Electrical Takeoff Accurately (and Quickly)How to take off electrical projects accurately: sheet order, legends, device and fixture counts, branch and…Lighting Fixture Takeoff: How to Read a Fixture ScheduleHow to do a lighting takeoff: reading the lighting fixture schedule, type tags, counts by type, linear…NFPA 72 for Electrical Estimators: Fire Alarm Takeoff GuideA fire alarm estimating guide for electrical contractors: NFPA 72 basics, initiating devices, notification…PlanSwift Electrical Takeoff: Quantity Takeoff GuideHow to do an electrical quantity takeoff in PlanSwift: scale, count and segment tools, assemblies, exporting…Schedule of Values for Electrical: Example & GuideHow to build an electrical schedule of values: line structure, splitting material and labor, example SOV,…Solar Takeoff & Solar Estimating: A Contractor's GuideSolar takeoff and estimating for contractors: modules, racking, the DC/AC chain, roof vs. ground mount, labor…Structured Cabling Estimating: Drops, Cable Lengths and PathwaysHow structured cabling estimators price data cabling: drop counts, average cable length, patch panels, racks,…What Does an Electrical Estimator Do? Skills and How to LearnWhat electrical estimators do day to day, the skills they need, and how to learn electrical estimating:…

Software and workflows

Electrical software and workflows

AI for Data Center Construction EstimatingAI takeoff for data center construction: electrical distribution, cooling, cable tray and low voltage at…Electrical Bidding Software with AI TakeoffElectrical bidding software that counts fixtures, devices and panels with sheet evidence, tracks addenda and…Electrical Contractor Software: The Complete Tech Stack GuideThe electrical contractor tech stack: bid management, takeoff, estimating, project management, field, service…Electrical Estimating AI: Fixtures, Panels & FeedersAI for electrical estimating: fixture and device counts, panel schedules, one-lines and feeder checks from…Industrial Electrical Estimating SoftwareIndustrial electrical estimating: cable tray, conduit and cable schedules, MCCs, instrumentation and…Lighting Estimating & Fixture Takeoff SoftwareLighting takeoff from plans and fixture schedules: fixture counts by type, controls, emergency and site…Popular Electrical Estimating Software: How to Choose (2026)The most popular kinds of electrical estimating and automated takeoff software in 2026, what to look for,…Security System Estimating: Devices, Cabling & LaborHow to estimate security systems: cameras, access control and intrusion devices from drawings, cable runs,…

Comparisons

Electrical comparisons

Accubid Pricing & Alternatives for Electrical EstimatingResearching Accubid pricing? What to ask before buying electrical estimating software, total-cost questions,…Accubid vs ConEst: Electrical Estimating Software ComparedAccubid vs ConEst for electrical contractors: what each is, how to compare labor databases, pricing, takeoff…ConEst Software: Pricing Questions & AI Takeoff OptionsEvaluating ConEst electrical estimating software? What to ask about pricing, how it compares with other…Manual vs Automated Electrical Takeoff: Pros & ConsManual vs automated electrical takeoff: speed, accuracy, review, revisions and cost, and a hybrid workflow…McCormick Estimating Software: Pricing Questions & OptionsEvaluating McCormick Systems for electrical or mechanical estimating? What to ask about price, how…Shop Drawings vs Design Drawings for Electrical ContractorsDesign drawings vs shop drawings for electrical contractors: who produces each, what they show, how they…Trimble Accubid Classic vs Anywhere (and vs Bluebeam)What Trimble Accubid is, Accubid Classic vs Anywhere, how it relates to Bluebeam, and how to evaluate…

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