What does GridCircuits do?
GridCircuits provides free browser-based engineering calculators for substation automation, protection and control, SCADA/RTU and transmission engineers. Tools include an IDMT overcurrent relay curve calculator, voltage drop calculator, transformer full-load and fault current calculator, three-phase power calculator, power factor correction calculator, Ohm’s law calculator and AWG wire size converter. Each tool shows its formula and standard clause, with IEEE/ANSI references first and IEC alongside. Tools run in the browser and project data is never uploaded.
Who should use GridCircuits?
protection and control, SCADA/RTU and transmission engineers, Substation automation are the clearest fit based on how the product is positioned.
Best fit
Pricing: Free
Platforms: Browser, Web
How much does GridCircuits cost?
Free Check the provider’s own page for the latest pricing, packages and terms.
Details, pricing and availability can change. We use provider information, verified owner updates and editorial review where available. Check the provider’s own page before making a purchase, booking or important decision.
Profile last updated 5 Nov 2026.
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