Who We Are — Qui Sommes-Nous
Watt Calculator is an independent digital engineering initiative and educational resource developed by an international team of licensed professional engineers (PE), electrical engineering researchers, software architects, and STEM educators. We are united by a common conviction: mathematical rigor in electrical science should be accessible, instant, and completely transparent to everyone.
Our team brings together over 40 years of combined hands-on experience spanning industrial power distribution, commercial electrical contracting under National Electrical Code (NEC) standards, renewable solar-plus-storage engineering, and low-power embedded circuit design. We build tools that bridge the gap between abstract textbook formulas and real-world job-site application.
What We Do — Ce Que Nous Faisons
At Watt Calculator, we research, engineer, calibrate, and freely publish high-precision computational tools for electrical power calculations, unit conversions, and circuit analysis. Our platform serves licensed electricians, power systems designers, electrical contractors, university researchers, and vocational students across 19 specialized calculators:
Deterministic 12-formula matrix solving Watts (P), Volts (V), Amps (I), and Ohms (R) with real-time algebraic step-by-step proofs.
3-Phase AC power solvers for Wye and Delta configurations, apparent power (kVA), reactive power (kVAR), and power factor correction.
Photovoltaic solar array sizing, battery capacity & runtime calculators (Watt-hours & Amp-hours), and Level 1/2/3 EV charging power solvers.
NEC 2026 wire gauge (AWG) ampacity tables, continuous load 125% derating rules, voltage drop estimations, and appliance power profiling.
All calculations are performed entirely client-side directly within your device's browser using 64-bit floating-point math. No inputs or electrical parameters are ever transmitted to remote servers, guaranteeing total data confidentiality, zero network latency, and instant results even when disconnected from the internet.
Our Story — Notre Histoire
Watt Calculator was founded out of a shared frustration with the state of online technical tools. In late 2023, while teaching electrical engineering coursework and conducting field audits for industrial facilities, our founders noticed a recurring problem: existing online electrical calculators were either bloated with intrusive pop-up advertisements, hid their mathematical logic behind mysterious "black-box" buttons, suffered from floating-point rounding errors, or required invasive user registrations and constant internet connectivity.
In early 2024, we set out to build a modern alternative rooted in an uncompromising principle we call the Open Formula Mandate: every calculation must display its intermediate algebraic derivation in real time, normalize to base SI units, and execute 100% locally in the browser with zero tracking.
What started as a single, clean Watt-Volt-Amp-Ohm solver quickly resonated with apprentices, journeyman electricians, university professors, and robotics hobbyists worldwide. In 2025, we expanded the platform into a comprehensive suite of 19 specialized calculators—ranging from 3-Phase industrial AC and EV charger ratings to solar photovoltaic sizing and NEC 2026 wire ampacity tables—and completely localized the entire experience into 18 native languages.
Today, Watt Calculator serves hundreds of thousands of engineers, tradespeople, and students each month. We continue to operate as an independent, ad-respectful engineering utility committed to accuracy, privacy, and open STEM education.
Transparence Mathématique : Le Mandat de Formule Ouverte
Contrairement aux applications grand public fournissant uniquement des résultats bruts, Watt Calculator applique un mandat de formule ouverte où chaque valeur calculée affiche sa dérivation algébrique en temps réel :
- Transparence des formules : dès la saisie de deux grandeurs, la formule appliquée s'affiche instantanément.
- Cohérence dimensionnelle des unités : toutes les valeurs sont converties en unités SI de base avant évaluation.
- Évaluation en forme close : les 12 variantes des lois d'Ohm et de Joule sont calculées par équations exactes sans dérive numérique.
Conformité aux Normes d'Ingénierie Électrique
Nos algorithmes et convertisseurs respectent rigoureusement les normes internationales d'ingénierie électrique :
Conforme aux définitions de puissance active, réactive et d'impédance de l'IEEE.
Dimensionnement des conducteurs et tensions nominales conformes au National Electrical Code.
Tensions de distribution normalisées (230V/400V 50Hz et 120V/240V 60Hz) entièrement intégrées.
Préfixes métriques (pico, nano, micro, milli, kilo, méga, giga, téra) rigoureusement calibrés.
Architecture de Confidentialité Locale
Nous estimons que vos données d'ingénierie et calculs sont strictement privés. Contrairement aux portails qui transmettent vos paramètres à des serveurs distants :
- 100% Côté Client: Toutes les opérations arithmétiques et conversions s'exécutent exclusivement dans le moteur JavaScript de votre navigateur.
- Aucun Compte Requis: Accès immédiat sans inscription, mur payant ni abonnement forcé.
- Zéro Transmission de Données: Nous n'enregistrons ni ne transmettons jamais vos tensions, courants ou puissances saisis.
Comité Consultatif et Examen par les Pairs
Les outils Watt Calculator sont constamment validés par des ingénieurs électriciens praticiens et des enseignants en sciences physiques.
Des bancs de tests automatisés vérifient les cas limites du millivolt au mégavolt avec une précision 64 bits à virgule flottante double précision.
Marcus Vance, PE
Réviseur Principal des Systèmes de Puissance
Plus de 20 ans d'expérience en conception d'appareillages commerciaux, contrôle de moteurs industriels et protection réseau.
Dr. Elena Rostova
Spécialiste en Électronique Embarquée
Doctorat en microélectronique ; experte en circuits IoT basse consommation, dynamique de batteries et dissipation thermique.
Siddharth Nair
Architecte Logiciel en Chef
Spécialiste du calcul numérique sur navigateur, des normes d'accessibilité web et de l'internationalisation multilingue.
Parent Company & Legal Entity — Société Mère et Entité Légale
Watt Calculator (accessible at wattcalculator.org) is an official digital computational service and educational publishing property owned, operated, and maintained by its parent company and legal business entity, Watt Calculator Inc.
Corporate & Business Entity Overview
San Francisco, CA 94105, United States
Legal: legal@wattcalculator.org
Corporate Relationship & Operational Governance: As the governing business entity, Watt Calculator Inc. assumes full legal and administrative responsibility for the infrastructure, scientific algorithms, domain assets, intellectual property, and privacy standards implemented across all 18 localized editions of the website.
Editorial Independence Policy: Watt Calculator Inc. enforces strict editorial and engineering autonomy. None of our calculation algorithms, equipment ratings, or educational articles are sponsored by electrical equipment manufacturers, utility corporations, or commercial contractors. All recommendations strictly reflect published engineering standards (IEEE, NFPA/NEC, IEC, and BIPM).