OhmXact

New in 2.0.3: 11 app languages, independent PDF report language, configurable Home, Workshop Library, Projects and clearer engineering results.

OhmXact is a fast, local-first electrical calculator and workspace for the workshop, bench and field.

CALCULATE WITH CLARITY • Series and parallel resistance, Ohm’s Law, power, voltage divider, LED and resistor colour-code tools • Technician notation such as 4R7, 4k7 and 2M2 • Engineering result formatting and optional calculation details

ORGANISE REAL WORK Save calculations, measurements and notes in Projects. Use Workshop Library to manage resistor stock and reference values, compare alternatives, and create local PDF reports in the language you choose.

YOUR LANGUAGE, YOUR DEVICE OhmXact supports 11 app languages. Choose a separate language for PDF reports. No account, ads, analytics or cloud processing: calculations and Projects stay on your device unless you explicitly share or export them.

PRO AND PRO+ One-time purchases unlock advanced electrical, workshop, automotive and EV tools, plus unlimited Projects and professional reporting. Eligible premium editions can also choose alternate app icons.

CAMERA RESISTOR READER (BETA) Pro+ includes an on-device Beta assistant for resistor bands. Always verify or correct every band before using the result.

IMPORTANT OhmXact provides calculation and design guidance. Verify results against manufacturer specifications, applicable requirements and professional judgement before installation.