Electronics Toolbox – All-in-One Electronic Calculator & Reference

The ultimate mobile toolkit for electronics engineers, hobbyists, students, and professionals!

Packed with more advanced calculators, references, and resources than standard apps, it covers everything from basic circuit design to complex systems analysis—all in one offline, easy-to-use app.

Math Tools: Solve systems of simultaneous equations, matrix operations instantly – perfect for circuit analysis and design calculations.

SMD Marking Search: Quickly look up component part numbers from SMD markings to identify unknown surface-mount devices on PCBs.

Programming Language References: Get fast overviews and syntax highlights for popular languages like Python, C/C++, Rust,etc

TTL & CMOS Quick Search: Instantly access pinouts, characteristics, and specifications for classic TTL (74xx series) and CMOS (40xx series) integrated circuits.

Formula Quick Search: Find and apply essential circuit formulas in seconds – including 555 timer (astable/multistable), op-amp configurations, oscillators, filters, star-delta transformation, and many more.

Nodal Analysis Calculator: Automatically compute node voltages and branch currents for complex

Equivalent Circuit Calculator: Simplify circuits with Thevenin and Norton equivalent calculations


Basic tools
• Resistor color code
• Inductor color code
• Resistor SMD marking & EIA-96
• dBm, dbW, dBuV converter
• Resistors in series
• Resistors in parallel
• Two resistors in ratio
• Voltage divider
• Ohm's law
• Y-Δ converter
• L, C reactance
• Complex number operation
• RC charging time constant
• RC filter
• RL filter
• LC circuit
• 555 monostable
• 555 astable
• Wheatstone bridge
• Trace width calculator
• Battery capacity
• Operational amplifier
• LED calculator
• RMS calculator
• Range calculator
• Temperature conversion
• BJT bias voltage
• Voltage regulator
• Shunt regulator
• Length converter
• Limit 10 combinations of component values


Digital Tools
• Number converter
• Logic gates
• DAC R-2R
• Analog-to-digital
• 7-segment display
• Minimization of boolean function
• Half adder & full adder
• Synchronous counter up to 6 states
• Cyclic redundancy check CRC-8, CRC-16, CRC-32
• Hamming code


Electronics resources
• SI unit prefix
• Physical quantities
• Circuit symbol
• ASCII table
• 74xx series
• CMOS 40xx series
• Pinouts
• C programming language
• Python language
• Common linux command for Raspberry Pi
• Resistivity table
• Permeability table
• Permittivity table
• Ampacity table
• AWG table
• Standard wire guage (SWG) table
• World plug
• EDA software
• Flip-flop
• SMD marking
• Formulas

PRO Version Unlocks (one-time purchase)
• No limitation of component values
• Selectable 1%,5%,10%,20% of values
• Complex matrix
• Pi-pad attenuator
• T-pad attenuator
• Coil inductance
• Poles & zeros calculator
• More resources

Perfect for:
• Electronics students & teachers
• Hardware makers & Arduino/Raspberry Pi enthusiasts
• Professional engineers in the field
• Hobbyists building robots, amps, and drones
• Works 100% offline – no internet needed!
• Lightweight, super-fast, regularly updated with new tools.

Need a feature? Just email us – we listen to every suggestion.
Download now and supercharge your electronics workflow!


All trade names mentioned in this app or the other documentation provided by this app are trademarks or registered trademarks of their respective holder. This app is not related or affiliated in any way these companies.