Voltage Drop. vs Electrical Calculator

Voltage Drop is a practical electrical calculation toolkit for electrical engineers, technicians, electricians, and students. Three tools in one: • VOLTAGE DROP CALCULATOR — Computes voltage drop for single/three-phase and copper/aluminum, and checks the result against your chosen 1.5%, 3% or 5% limit. It recommends the minimum cross-section that satisfies BOTH the voltage-drop limit and the current-carrying capacity. • CABLE SIZING — Finds the smallest cable cross-section required for your load and line, and lists the cable types available in that size. • CABLE CATALOG — Provides the technical features of common low-voltage cables (NYA, NYAF, NYM, H05VV-F, NYY, NAYY, NHXMH, N2XH, N2XH FE180), including current-carrying capacity tables per cross-section (in air / in conduit / in ground), right inside the app. FEATURES • Single-phase and three-phase systems • Copper and aluminum conductor support • 1.5% / 3% / 5% voltage-drop limit check with cross-section recommendation • "Suitable cables" suggestion after each calculation, with one-tap access to cable details • Cable technical-feature tables (including halogen-free cables) • Calculation history: save, reopen, delete • Works fully offline, ad-free • 9 language support PRIVACY The app does not collect any personal data. No account is required, and the values you enter never leave your device.

Electrical Calculator is a fast, offline toolkit for electricians, students and DIY pros - with no subscription and no ads. The core calculators are free forever. Unlock Pro once (no subscription, ever) for the full professional set. FREE - Ohm's Law: enter any two of volts, amps, ohms, watts - Energy cost: power, hours and rate to kWh and cost - Series and parallel resistance PRO (one-time) - Voltage drop: wire, load and length to drop, percent and end voltage - Wire size: smallest AWG for load and voltage drop - Ampacity: AWG to amps (NEC 310.16, 75C) with breaker limits - Conduit fill: EMT and THHN to percent fill - Box fill: conductors and devices to required volume (NEC 314.16) - Motor FLA: HP and voltage to full-load amps, conductor and breaker - Three-phase power and current, transformer kVA - Power factor correction, conduit bending, wire resistance, amps to kW/HP MORE - Works fully offline, no account, no tracking - Light and dark themes, English and Russian - Paperless tape: save and share your results Estimates are based on the NEC. Always verify against your local code and the authority having jurisdiction. This app is a tool, not a substitute for a licensed electrician.