Tools for Electronics Enthusiasts
42 toolsCalculators and simulators for electronics projects. Ohm's law, resistor color codes, PCB trace width, 555 timer circuits, LED calculations, and interactive circuit simulation.
Alarm Sound Generator
Generate alarm sounds, notification tones, and sirens. 33 presets, custom synthesizer, multiple export formats.
Doorbell Sound Generator
Generate doorbell sounds, chimes, and melodies. 35 presets, custom synthesizer, melody composer, multiple export formats.
VR Headset Test
WebXR diagnostic suite for FOV, tracking, refresh rate, spatial audio and display dead pixels — runs inside your headset browser
VR Compatibility Test
Check WebXR support, GPU, CPU, RAM, sensors and bandwidth — then see which VR headsets match your hardware
BIN/CUE to ISO
Convert BIN/CUE to ISO online. Auto-detects MODE1/2 sector layouts, extracts CD-DA audio as WAV, parses multi-track cuesheets. Free.
Screw Gauge
Measure a screw on your calibrated screen, or print a true-to-size paper gauge — then read its diameter, thread pitch and length.
Drill Bit Gauge
Measure a drill bit on your calibrated screen, or print a true-to-size gauge — then read its metric and inch size.
O-Ring Sizer
Measure an O-ring on your calibrated screen, or print a true-to-size sizer — then read its inner diameter and cross-section.
Hex Key Gauge
Measure a hex key on your calibrated screen, or print a true-to-size gauge — then read its metric or SAE size.
Nail Gauge
Measure a nail on your calibrated screen, or print a true-to-size gauge — then read its penny size, length and shank thickness.
Battery Identifier
Measure a battery on your calibrated screen, or print a true-to-size gauge — then read which battery it is.
Angle Finder
A digital inclinometer that reads tilt in degrees, percent, per-mille and roof pitch — plus a clinometer mode for the height of trees and buildings.
Online Ruler
Free online ruler in actual size. Calibrate to your screen and measure in cm, mm and inches — on screen or on a photo.
Online Protractor
Online protractor with transparent overlay and photo measurement — mm calibration, multi-angle, PNG/PDF/JSON export. Handy for builders, carpenters and students.
Bubble Level
Digital spirit level using your phone's sensors — 2D surface bubble, inclinometer, plumb line and camera AR with angle export.
Dummy File Generator
Generate dummy files of any size from 1 KB to 10 GB. Zero, random, text or pattern bytes, custom extension, instant browser download.
Sine Sweep WAV Generator
Generate log or linear sine sweep WAV files for REW, ARTA and room measurement. 20 Hz–20 kHz, 44.1/48/96 kHz, 16/24-bit, full channel routing.
TV Test Pattern Generator
TV calibration patterns for projectors and displays — SMPTE bars, PLUGE, grayscale, focus star, HDR window, overscan. PNG up to 8K plus MP4 loops.
