14 precision calculators, AI assistant, and dual IEC/NEC standard support. Built for electricians and engineers who don't guess.
From cable sizing to motor calculations — Wattson covers residential, commercial, and industrial. IEC and NEC standards built in.
All Tools
Cable Sizing
Conduit Fill
AI Assistant
Pro Toolbox
Professional tools designed to save time and eliminate errors in the field.
From Ohm's Law to Smart Cable Sizing. Every calculation an electrician needs, verified against IEC and NEC standards.
Ask Wattson anything. Voice input, real calculator integration, and answers backed by verified calculations — not guesswork.
Dual-standard support. IEC 60364 for international, NEC/NFPA 70 for the US. Switch with one tap.
Export professional PDF reports from any calculator or AI conversation. Share with clients and inspectors.
English, German, French, Spanish, Italian, Polish, Portuguese, and Croatian. Every label, every calculator.
Easy on the eyes during night shifts. Automatic, light, or dark — follows your system preference.
Stop switching between apps and spreadsheets. Wattson has every calculation built in.
Smart Cable Sizing
Ca, Cg, Ci derating
Voltage Drop
1-phase & 3-phase
Breaker Sizing
Ib ≤ In ≤ Iz
Motor Calculator
FLC, starting, protection
Short Circuit
IEC 60909 Ik
Earth Fault
Zs loop impedance
Power Calculator
P, Q, S, cosφ
PF Correction
Capacitor bank sizing
Wire Sizing
AWG & mm²
Conduit Fill
IEC fill limits
Ohm's Law
V, I, R, P solver
Unit Converter
AWG, kW, HP, °C
Box Fill
NEC 314.16
Dwelling Load
NEC Article 220
Not a chatbot that guesses. Wattson's AI runs your actual calculators and returns verified results. Ask by voice or text.
Voice input — ask questions hands-free on the job site
14 calculator tools — AI calls the real engine, not guesswork
PDF export — save any AI answer as a professional report
Wattson AI
Online
What size cable for 32A at 25m on 230V?
6mm² copper (PVC, method C). Voltage drop: 1.87% — within 5% limit. Recommended breaker: 32A Type C.
Free download with Ohm's Law, Unit Converter, Color Codes, and AI Assistant. Unlock all 14 calculators with a one-time Pro upgrade.
