MD Visor
CSV → Charts → Technical Reports
Turn measurement and simulation data into professional technical reports. Create charts and tables from CSV data, add equations, diagrams and documentation, and export the finished report to PDF, DOCX or HTML.
Explore MD Visor →Online Engineering Tools
Free browser-based tools for electronics, RF engineering, circuit design, data conversion, signal analysis and embedded development. Use the calculators directly in your browser — no installation is required.
The collection includes RF and Smith chart tools, transistor and MOSFET calculators, LC and oscillator design utilities, CSV and binary data tools, serial communication utilities, FPGA video timing calculators and other engineering tools.
32 tools available
Online Utility
Data conversion, Hash, Hmac, AES, SCrypt, HKDF and other
Open tool →CSV Converter
Load a CSV/TSV file — automatically detects the delimiter, header row and decimal format
Open tool →Timestamp Converter
Detects and converts Unix, FILETIME, Ticks, NTP, GPS and Julian timestamps, with full precision using BigInt.
Open tool →Hex view
Read-only viewer for binary files in hexadecimal and ASCII, with no save/export.
Open tool →Hex editor
Load, edit and save binary files byte-by-byte in a hex/ASCII grid, with undo support.
Open tool →Serial terminal
Serial terminal using the Web Serial API — requires a Chromium-based browser (Chrome, Edge).
Open tool →Video Timing Calculator
VGA · HDMI · TV — pixel clock, porches, sync — VHDL / Verilog / C output for FPGA & embedded
Open tool →FPGA Video Color Calculator
PAL analog color levels, RGB ↔ YCbCr (BT.601/709) conversion, and Verilog color-bar LUT generation.
Open tool →Keeloq decoder
Decodes KEELOQ 66-bit frames, encrypts/decrypts hopping code, and generates device keys.
Open tool →ASN.1 Reader
A tool that decodes binary data and presents it as a fully parsed ASN.1 structure.
Open tool →Attenuation Calculator
RF measurement calculator for spectrum analyzer work with external attenuators
Open tool →WebElecTools
Interactive calculators for RC, LR, RLC, and band-pass filters with real-time plots
Open tool →Simple RF Tool
A compact tool for Smith chart visualization, impedance matching, transmission lines, VSWR, and TDR analysis.
Open tool →Smith chart tool
Editor for RF networks (load, series, parallel, transmission-line and matching components) with simulation and Smith chart plotting.
Open tool →Antenna Calculator
Element length and gain calculator for ground-plane, dipole and Yagi antennas.
Open tool →CR Phase-Shift Oscillator
Design tool for 3-stage CR phase-shift network oscillators
Open tool →Amplifier Calculator
Bias, gain and impedance design for an NPN common-emitter amplifier, with a step-by-step complete-design mode.
Open tool →NPN BJT Analyzer
NPN Transistor Amplifier Analyzer - common emitter
Open tool →Hartley Oscillator
BJT Hartley oscillator design calculator
Open tool →Transformer-Coupled Driver Stage
BJT amplifier driving a transformer – DC isolation, impedance transformation, coupling quality, gain and output voltage
Open tool →MOSFET/JFET Amplifier and Switch Calculator
Amplifier (common-source, source-follower) and switch (low-side, high-side) design for MOSFET/JFET stages.
Open tool →Detailed Transistor Switching & Load Calculator
Switching and load-line calculator for N-channel and P-channel MOSFETs, including gate drive and losses.
Open tool →Inductor & Coil Calculator
Design and analysis of air-core coils, ferrite cores, and toroids
Open tool →Signal Range Converter using OPAMP
Differential, non-inverting and inverting OPAMP stages for shifting a signal into a target voltage range.
Open tool →Astable Multivibrator Calculator
Component calculation for symmetric astable multivibrator with two NPN transistors
Open tool →LC Resonance Circuit Calculator
Design and analysis of series, parallel, tapped and link-coupled LC circuits
Open tool →Frequency ↔ Wavelength Converter
Calculator for wavelength from frequency and vice versa
Open tool →Modulation calculator
Calculates AM, FM and PM modulation parameters — modulation index, deviation and bandwidth.
Open tool →Harmonic Component Calculator
Fourier-series harmonic decomposition of square, triangle, sawtooth and rectified waveforms.
Open tool →DCF77 Encoder & Decoder
Tool for encoding and decoding DCF77 time signal
Open tool →Heterodyne Measurement Utility
Reconstructs the actual RF signal level from an oscilloscope reading after a ZEM-4300+ or ADE-11X+ mixer, using its conversion-loss curve.
Open tool →Document collection & Links
Curated collection of external reference links for SDR, RF and embedded development.
Open tool →No tools found.
Bode Lab Coming soon
Automated frequency-response, phase and distortion measurements using Rigol oscilloscopes and function generators.
