Premium Developer Utility Suite
A secure, fast, and lightweight collection of client-side developer and productivity tools. Format JSON, convert base64, translate cron schedules, and plan studies 100% privately.
Zero Data Uploads
Processed entirely in browser
Offline Capable
Runs without server connection
Instant execution
Optimized static bundle sizes
Converters Utilities
10Length Converter
Convert between metric and imperial length units (meters, feet, inches, kilometers, miles).
Weight & Mass Converter
Convert weight and mass units (kilograms, pounds, ounces, grams, stones, tons).
Temperature Converter
Convert temperature values between Celsius, Fahrenheit, and Kelvin scales.
Area Converter
Convert surface areas (square meters, square feet, acres, hectares, square kilometers).
Volume Converter
Convert liquid and dry volumes (liters, milliliters, gallons, pints, cups, ounces).
Data Size Converter
Convert storage metrics between decimal (KB, MB, GB) and binary (KiB, MiB, GiB) units.
Speed Converter
Convert speed measurements (meters/second, km/h, mph, knots, feet/second).
Time Converter
Convert time durations (seconds, milliseconds, minutes, hours, days, weeks, years).
Pressure Converter
Convert pressure units (Pascals, Kilopascals, Bar, PSI, Atmospheres, Torr).
Angle Converter
Convert angular units (Degrees, Radians, Gradians, Arcminutes, Arcseconds).
Text Utilities
2design Utilities
2developer Utilities
20Password Generator
Generate secure, random, and custom passwords to protect your online accounts.
JSON Toolkit
Format, minify, and validate JSON data instantly with inline syntax highlighting and error details.
UUID Generator
Generate cryptographically secure UUID v4 (random) and UUID v1 (time-based) in bulk.
Base64 Encode/Decode
Encode and decode text strings or upload files to convert them to Base64 Data URLs locally.
Hash Generator
Calculate MD5, SHA-1, SHA-256, and SHA-512 cryptographic checksums for text or files locally.
Text Case Converter
Convert text case formats between UPPERCASE, lowercase, Title Case, camelCase, snake_case, and kebab-case.
URL Encode/Decode
Encode or decode URL strings and parameters to safely transmit them over the internet.
YAML Formatter & Validator
Format, validate, and convert YAML data to JSON (and vice-versa) instantly.
XML Formatter & Validator
Prettify, validate, and minify XML documents with real-time parser diagnostics.
SQL Formatter
Format your SQL queries across various dialects like PostgreSQL, MySQL, SQLite, and Oracle.
JWT Decoder
Decode JSON Web Tokens (JWT) client-side to inspect headers, payloads, and signatures.
HTML Entities Encoder & Decoder
Encode characters into HTML entities or decode HTML entities back to raw text with multiple format options.
Cron Descriptor & Generator
Parse complex crontab schedule expressions into plain English descriptions.
JSON Schema Generator
Generate a draft-07 JSON Schema structure automatically from a raw JSON input.
Regex Tester & Matcher
Test and match regular expressions in real-time with group extraction and replace helpers.
URL Parser & Query Splitter
Parse protocols, hosts, pathnames, and search parameters from any query URL.
Unix Epoch Timestamp Converter
Convert Unix seconds or milliseconds to human-readable date strings and vice versa.
JSON ↔ YAML Converter
Convert JSON strings to clean YAML configuration structures and vice versa.
User Agent Parser
Parse User Agent strings to identify client browsers, operating systems, and device types.
Hex ↔ String Codec
Encode text strings into hexadecimal format or decode hexadecimal representations back to plain text.
engineering Utilities
14Resistor Color Code Decoder
Decode 4, 5, or 6-band resistor color codes using an interactive visual band-picker, with E12/E24 nearest series value comparison.
Ohm's Law Calculator
Calculate electrical Voltage, Current, Resistance, and Power using any two known variables under Ohm's Law.
Voltage Divider Calculator
Compute output voltage or resistance values for a simple dual-resistor voltage divider network.
LED Resistor Calculator
Determine the required series resistance and minimum power rating for single or multiple series LED indicator circuits.
Series/Parallel Equivalence Calculator
Calculate equivalent values for resistors or capacitors connected in series or parallel networks.
Wheatstone Bridge Calculator
Calculate the bridge output voltage or determine the unknown balancing resistor in a Wheatstone Bridge circuit.
555 Timer Calculator
Design astable or monostable 555 timer circuits, computing frequency, duty cycle, period, and pulse intervals.
Decibel (dB) Converter
Convert linear voltage or power ratios to Decibels (dB) and vice-versa.
RC Filter Cutoff Frequency Calculator
Calculate the cutoff frequency (-3dB) of a resistor-capacitor (RC) low-pass or high-pass passive filter.
LC Resonant Frequency Calculator
Calculate the resonant frequency of an inductor-capacitor (LC) tank circuit.
RF Link Budget Calculator
Calculate Free Space Path Loss (FSPL) and estimate signal power at the receiver for wireless links.
PCB Trace Width Calculator
Calculate PCB trace width for target current limits using the IPC-2221 design standard.
AWG Wire Gauge Calculator
Convert American Wire Gauge (AWG) numbers to diameter, cross-sectional area, copper resistance, and ampacity.
Thermal Resistance Calculator
Calculate semiconductor junction temperature based on power dissipation and thermal resistances.
finance Utilities
4Systematic Investment Plan (SIP) Calculator
Estimate future returns of your monthly SIP investments with detailed year-by-year projections and charts.
EMI Loan Calculator
Calculate equated monthly installments (EMI), total interest payable, and view your detailed amortization table.
Compound Interest Calculator
Simulate savings growth over time with customizable compound frequencies and monthly contributions.
Live Currency Converter
Convert national currencies instantly using live exchange rates cached for maximum speed and privacy.
image Utilities
12Image Format Converter
Convert images between PNG, JPEG, WebP, and GIF formats client-side.
Image Compressor & Resizer
Reduce image file size, adjust dimensions, and scale images client-side.
SVG to Image Converter
Convert SVG code or files into high-resolution PNG or JPEG formats.
Image Base64 Converter
Convert images to base64 data URLs or decode base64 strings back to images.
Color Palette Extractor
Extract dominant color palettes and pick colors from images with a pixel magnifier.
Meme Generator
Create custom memes by adding top and bottom text overlay with customizable fonts.
Rotate & Flip Image
Rotate images by degrees or flip them vertically/horizontally in real-time.
Image Filter & Adjuster
Adjust brightness, contrast, saturation, and blur levels of images dynamically.
Retro Image Pixelator
Transform standard photographs into retro pixel art grids dynamically.
SVG Viewer & Optimizer
Render raw SVG markup, inspect vector code, and strip formatting/comments.
Multi-Size Favicon Generator
Generate multi-size web favicons (16x16, 32x32, 48x48) instantly from any image.
Barcode Generator (Code-128)
Generate standard Code-128 barcode graphics from any text string client-side.
pdf Utilities
5PDF Merger
Combine multiple PDF files into a single document client-side.
PDF Splitter
Extract specific pages or page ranges from a PDF document.
PDF Page Rotator & Deletor
Rotate pages clockwise or delete unwanted pages from a PDF document.
Images to PDF Converter
Convert multiple PNG or JPEG images into a formatted PDF document.
PDF Metadata Editor
Edit standard PDF document properties such as Title, Author, and Subject.
robotics Utilities
11PID Tuning Helper
Simulate first-order lag and delay control systems, suggest PID gains using Ziegler-Nichols or Cohen-Coon rules, and plot the step response.
Forward Kinematics 2R Arm Simulator
Calculate and visually simulate the end-effector position of a 2-joint planar robotic arm using link lengths and joint angles.
Inverse Kinematics 2R Arm Calculator
Calculate joint angles required to position a 2-joint planar robotic arm at a target X-Y coordinate.
Robotic Arm Joint Torque Calculator
Compute worst-case static holding torques required for joint actuators under gravity loading.
DH Parameters Matrix Calculator
Calculate Denavit-Hartenberg (D-H) homogeneous transformation matrices for robot link frames.
Robot Drive Speed & Torque Calculator
Determine required wheel RPM, motor torque, and power based on robot mass, acceleration, and wheels.
Battery Run Time Calculator
Estimate robot or drone operating duration based on battery capacity and average current draw.
LiPo Battery Charge Rate Calculator
Determine charge rate (C-rate) and estimate charge time for lithium polymer battery packs.
Stepper Motor Speed & Step Calculator
Calculate steps per revolution and motor RPM from step pulse frequencies and microstepping settings.
IMU Orientation Converter
Convert 3D orientation representations between Unit Quaternions and Euler angles.
H-Bridge Power Dissipation Calculator
Calculate motor driver heat dissipation based on current and MOSFET on-resistance.
student Utilities
15Percentage Calculator
Calculate percentages, percentage increases, and fractional conversions easily.
Attendance Calculator
Calculate current attendance, and see how many classes you can skip or must attend to hit your target.
CGPA Calculator
Calculate your cumulative grade point average (CGPA) from semester GPAs or individual subject grades.
Exam Countdown
Keep track of upcoming exams with live countdown timers, sorted by date.
Semester Planner
Plan your semester courses and target grades to calculate your expected GPA.
Timetable Generator
Generate, customize, and export a weekly class timetable as a high-quality PNG image.
Assignment Cover Page Maker
Generate standard assignment cover pages matching university formats and download them as clean PDFs.
Citation Generator
Format references and citations in APA, MLA, and Chicago styles for books, websites, and journals.
Study Timer
A Pomodoro study timer with notifications and AudioContext audio alerts for study sessions.
Grade Calculator
Calculate the final exam grade needed to secure your target course percentage.
Scientific Calculator
A standard scientific calculator with trigonometric, log, and constant functions.
Text to Speech
Convert written text to spoken audio using standard speech voices and control pitch/speed.
Speech to Text
Transcribe spoken words into text in real-time with multi-language support and copy utility.
Lab Report Formatter
Format academic lab reports, input experimental observations, and compile them into clean PDFs.
Notes to PDF
Write rich markdown lecture notes, preview the layout, and compile them into styled PDF papers.