Professional-grade electronics calculators for engineers, students, and makers. From 555 timers to PCB design, get instant results โ all free.
Explore every essential tool for circuit design, analysis, and prototyping โ no signup or hidden fees.
Real-time calculation updates, live previews, and intuitive interfaces for every tool.
Upload CSV/TXT files for batch component calculations โ perfect for BOM validation.
No signup, no data collection. All calculations happen locally in your browser.
Fully responsive across phones, tablets, and desktops. Smooth experience anywhere.
From Ohm's law, 555 timer astable/monostable, LED current limiting resistors, PCB trace width, RLC resonance, voltage dividers, to battery life estimation, op-amp gain, and RF power โ every essential electronics formula is covered.
Yes, all tools are completely free for personal, educational, and commercial use. No registration required, unlimited calculations. Results are for reference; always prototype critical designs.
Each tool uses industry-standard formulas (e.g., 555 timer: f = 1.44/((R1+2R2)C); Ohm's law: V=IR). Results are accurate to user-provided inputs and include decimal precision control.
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