Electronics Toolbox is an offline, all-in-one electronics calculator and reference app designed for students, hobbyists, and professionals. It packs advanced math tools, SMD marking search, programming language references, and TTL/CMOS pinouts into a fast, offline toolkit. With 500,000+ total downloads and 1.3K in the last 30 days, it holds a strong position at #107 in Denmark's Education category and a solid 4.60 rating from 4,573 users.
Pros & Cons
Comprehensive offline toolkit covering math, marking searches, and quick references
Strong focus on education with 100% offline capability
Wide range of tools from SMD markings to Thevenin/Norton equivalents
Marketing emphasizes offline tools; some users may prefer online resources or Arduino-focused integrations highlighted by competitors
About Electronics Toolbox
Electronics Toolbox is an education app developed by Peter Ho.
How many times has Electronics Toolbox been downloaded?
Electronics Toolbox has been downloaded 880 thousand times. In the last 30 days, the app was downloaded 1.3 thousand times.
What is the rating of Electronics Toolbox?
Electronics Toolbox is rated 4.60 out of 5 stars, based on 4.6 thousand ratings.
Is Electronics Toolbox free?
Electronics Toolbox is free to download. The APK download size is 33.16 MB. The latest version available is 6.00.50. The last update was on June 8, 2026.
What are the requirements for Electronics Toolbox?
Electronics Toolbox requires Android 5.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play January 2014.
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.
Recent changes: 6.00.50 - Fix user interface bug
6.00.40 - Support for Android 16 - Arduino Ventuno Q - ICS file format
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Great electronics app for beginners and useful for experienced engineers for reminders.
★★★★☆ike oke· May 26, 2024
Must-have for technicians. All in book Rappel Memoir... Very useful
★★★★★Mbuyiseni Mjiyako· Feb 14, 2025
I'm the Retail Security officer, stand at the door checking the slips to ensure that items on the slip are corresponding with items in the bag. Your Application has helped me a lot. I love when customers approached me for electronics items to describe for them and thanks a lot. I have to continue with learning because it is wide and good. I'm from South Africa 🇿🇦. KEEP UP THE GOOD WORK. THANKS AGAIN.
★★★★☆Dustin Wise· Jun 1, 2024
It's a pretty informal app really my fave thing on it is the AI but there a couple of things that could be added to make it even cooler like a laser diode driver and the Mw Nm of some drivers laser diodes that write at whatever x speed
★★★★★Denis Mwakireti· Feb 21, 2025
Best app for beginners. All the information is provided for any electrical work.
★★☆☆☆Lolkerhaha owen· Jun 8, 2023
Why anterner need pro version how make Nicolas Tesla coil conductor?
★☆☆☆☆Stephen Musembi· Jun 16, 2023
Nice one, easy to use and also advisable for everyone to use for better results.
Google Play Rankings for Electronics Toolbox
This app is not ranked
Technologies used by Electronics Toolbox
5 permissions·21 libraries
Subscribe to see full permission and library details
Trust & Safety: Permissions include ACCESS_NETWORK_STATE, INTERNET, BILLING, CHECK_LICENSE, and DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION. The app operates offline and offers a one-time PRO unlock for advanced features.
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