FieldCalc Pro

28 code-compliant calculators for electricians, HVAC techs & contractors. Now with code references, batch calculations, job-site photos & CSV export. Try Pro free 7 days.

FieldCalc Pro puts 28 professional trade calculators in your pocket — built for the job site, referenced to real codes, and 100% offline.

ELECTRICAL (NEC 2023) Ohm's Law, Voltage Drop, Wire Sizing with DLO cable & parallel conductor support, Conduit Fill, Load Calculator, Motor FLA, Transformer Sizing, Breaker & Fuse Sizing, Power Factor Correction.

HVAC (ASHRAE) BTU Heat Load, CFM Airflow, Duct Sizing, Equipment Sizing, Refrigerant Charge, Ventilation Rate (ASHRAE 62.1), Psychrometric, Heat Exchanger, Cooling Tower.

CONSTRUCTION (IRC / ACI) Concrete Volume, Paint Coverage, Lumber Framing, Drywall Estimator, Roof Pitch & Area, Gravel & Aggregate, Brick & Block, Rebar Spacing (ACI 318-19), Staircase (IRC R311.7), Tile Estimator.

EVERY CALCULATOR SHOWS ITS CODE Each result cites the applicable standard and edition year. Compliance badges show whether a calculator is code-compliant, standards-referenced, or an estimation tool. Wire sizes display both AWG/kcmil and mm² for international use.

PRO FEATURES

• All 28 calculators unlocked
• Job-site photo attachments (up to 3 per calculation)
• Batch calculations — compare up to 20 scenarios side by side
• PDF reports with your company logo and license number
• CSV export for estimating and documentation
• Imperial/metric toggle on all results
• Calculation history with search and trade filter
• Unlimited projects
• iCloud sync across devices

FREE FEATURES

• 6 calculators (2 per trade) with full code references
• Unit converter with AWG-to-mm², HP-to-kW, and more
• 1 project
• Works 100% offline — no account, no internet, no tracking

BUILT FOR THE FIELD

• Large touch targets for gloves and sunlight
• Input memory remembers your last values
• Haptic feedback on calculations and compliance results
• Spotlight search — find any calculator from your home screen
• Quick Actions — jump to recent calculators from the app icon

Start with a 7-day free trial. $4.99/month or $49.99/year after trial.

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