Ohm's Law to solar sizing.

Favorites and widget pins are global. History entries are tagged by dashboard so each dashboard shows only its own activity — with a global export available on the hub.

Every widget uses the same Universal Converter Engine that powers our full converter tools — deterministic factor + offset math, IEEE-754 rounding, and validated non-negative constraints where required.

Yes. Every dashboard is fully offline-first — no external APIs are called for calculations. Installing the app to your home screen keeps it available with no network.

No. Every Ohm's law, power, battery, cable, transformer, motor, and solar calculator runs 100% client-side using pure formula engines. Nothing is uploaded, cached, or logged.

Formulas follow IEEE and IEC 60050 conventions. AWG uses the ASTM B258 relation d(AWG) = 0.127 · 92^((36 − AWG)/39) mm. Voltage-drop uses copper (1.724 × 10⁻⁸ Ω·m) or aluminium (2.82 × 10⁻⁸ Ω·m) resistivity with a temperature-coefficient correction.

Yes. Every calculator produces Markdown, CSV, JSON, and plain-text artifacts you can copy, download, print, or share — including step-by-step formula reports and safety notes.

No. Results are engineering estimates for sizing, teaching, and preliminary design. Real installations must follow your local electrical code (NEC, IEC, BS 7671, etc.) and be certified by a licensed professional.