Instant Online Utilities for Developers & Creators

JSON Formatter

Format, beautify, and minify raw JSON data. Customize indentation levels and copy clean JSON instantly.

JSON Validator

Check if your JSON data is valid. Get clear error messages, including line numbers and character positions for invalid JSON.

Base64 Converter

Encode text into Base64 format or decode Base64 strings back to clean, readable text with full Unicode support.

JWT Decoder

Decode JSON Web Tokens (JWT) client-side. View headers, payloads, signatures, and check token expiry times instantly.

UUID Generator

Generate single or bulk secure RFC 4122 UUID v4 codes. Customize casing, hyphens, and quantities.

Password Generator

Build ultra-secure custom passwords. Configure length, toggle symbols, numbers, casing, and review password strength.

Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 cryptographic checksums from input text.

URL Encoder & Decoder

Encode query parameters safely to RFC 3986 format or decode percent-encoded strings back to standard URIs.

URL Shortener

Compress long links into neat shortened URLs, customize link aliases, generate QR codes, and monitor click statistics.

Regex Tester

Write and test regular expressions in real-time. Match test strings, view capture groups, and check validation regex.

One-Time Secret Share

Share sensitive passwords, tokens, or private keys using zero-knowledge E2E encryption and burn-on-read links.

QR Code Generator

Generate high-resolution custom QR codes instantly. Customize foreground and background colors, sizes, and correction levels.

Color Picker

Pick, convert, and analyze colors. Includes a visual canvas spectrum, contrast ratio checker, palette generator, and history.

Rich Text & Markdown Editor

Compose, format, and preview rich text and markdown content with live word count, character count, and export options.

CSV to JSON Converter

Convert raw CSV spreadsheets or comma-delimited data into structured JSON objects or arrays with automatic type detection.

Excel to JSON Converter

Parse Excel XLSX or XLS workbooks entirely client-side and convert sheet data into clean JSON output instantly.

JSON to CSV Converter

Convert nested and flat JSON objects into clean RFC 4180 CSV and TSV spreadsheets with live grid preview and UTF-8 BOM download.

JSON to Excel (XLSX) Converter

Convert JSON structures into professional Microsoft Excel (.xlsx) workbooks with multi-sheet support, auto column widths, and live grid preview.

JSON to Excel Converter

Convert JSON arrays and multi-sheet objects into editable Microsoft Excel spreadsheets (.xlsx) with custom column auto-fit and instant download.

XML Formatter & Beautifier

Beautify, indent, format, and validate raw XML documents. Highlight syntax and copy formatted markup seamlessly.

Developer Pro

API Load Tester

Benchmark REST & GraphQL endpoints with customizable concurrent workers, request rates, latency distributions, and p95 graphs.

QR & Barcode Scanner

Scan QR codes, UPC, EAN, Code 128 barcodes via live camera or uploaded image files with instant client-side decoding.

Live Telemetry

Internet Speed Test

Measure live download, upload speeds, jitter, and real-time network latency with detailed telemetry graphs.

Number Base Converter

Convert integers and floating point values between Binary (Base 2), Octal (Base 8), Decimal (Base 10), and Hex (Base 16).

Word & Character Counter

Real-time text analysis: count words, characters, sentences, paragraphs, reading time, and keyword density.

18 Languages

Text to Audio & Speech Converter

Free online Text to Audio and Text to Speech (TTS) converter. Convert written text into natural spoken voice across 18 Indian regional languages and English accents with instant MP3 & WAV downloads.

Hardware Test

Microphone Test

Test your audio input device with real-time waveform visualizer, volume meter, and voice playback check.

Hardware Test

Speaker & Audio Test

Test your stereo left/right audio channels, frequency response from 20Hz to 20kHz, and spatial audio balance.

Fun for Kids

Digital Coloring Book for Kids

Fun interactive online coloring book with brush, fill bucket, stickers, vibrant color palettes, and printable outlines.

Learning

Kids Quiz & Trivia Generator

Create engaging multiple choice quizzes on science, animals, geography, space, and math for school children.

Sudoku for Kids & Beginners

Play easy 4x4, 6x6, and standard 9x9 Sudoku puzzles with helpful hints, error checking, and solution solver.

Card Flip Memory Game

Improve cognitive memory by finding matching pairs of animal, fruit, and emoji cards with timer and move counters.

Math Riddle & Number Puzzle

Challenge your logic with arithmetic riddles, missing number series, balance scales, and equation brainteasers.

15-Puzzle Sliding Tiles

Classic 15-sliding tile number puzzle game. Slide tiles in order from 1 to 15 in minimum moves.

Maze Generator & Solver

Generate randomized labyrinth mazes with customizable grid complexity and instant A* pathfinding solutions.

Crossword Puzzle Maker

Build custom crossword puzzles from your own vocabulary word list and clues with printable PDF export.

Word Search Puzzle Maker

Generate themed word search grids with hidden words horizontally, vertically, and diagonally with answer key.

Fun Game

Hidden Object Finding Game

Spot hidden shapes, toys, and animals in vibrant illustrated scenes before time runs out.

Fun Game

Spot the Difference Game

Compare two side-by-side pictures and spot all 5 subtle differences with hints and instant feedback.

Learning

Kids Visual Matching Game

Match objects to their shadows, colors, categories, and word associations for preschool early learning.

Odd One Out Visual Riddle

Identify the odd shape, color, pattern, or word that does not belong in the group.

Fun & Trivia

Riddle & Brainteaser Generator

Discover hundreds of funny, clever, and tricky riddles for kids and adults with revealable answers.

Interactive

3D Dice Roller

Roll virtual 3D animated dice with realistic physics. Support for d4, d6, d8, d10, d12, d20, and d100 with modifier rolls.

Interactive

3D Coin Flipper

Flip 3D gold and silver coins with realistic rotation physics for decision making, heads/tails coin tosses, and probability tracking.

Interactive

Decision Spin Wheel

Create customizable spinning wheels for giveaways, random name pickers, truth or dare, and decision making.

Classic Retro Snake

Play the classic retro Snake game with Neon Cyberpunk & Nokia 3310 skins, golden star bonuses, solid or wrap walls, and touch D-pad.

Tic-Tac-Toe Game

Play Tic-Tac-Toe online against intelligent AI (Unbeatable Minimax) or 2-player Pass & Play with 3x3, 4x4, 5x5 boards and emoji themes.

Fun Game

Rock Paper Scissors Game

Play Rock Paper Scissors & 5-way RPSLS against predictive AI. Features 3D hand clash battle animations and tournament streak stats.

Neon Brick Breaker

Smash colorful neon brick walls with paddle and ball physics, multi-ball drops, laser blasters, and level progression waves.

Retro Cyber Pong

Play classic 2D table tennis paddle game vs intelligent AI or local 2-player split screen with spin ball physics and rally speed bursts.

Tower Stack Builder

Test your timing and reflexes to stack moving blocks into the tallest skyscraper tower with musical combo chimes and slicing physics.

Retro Highway Car Racer

High-speed 2D retro highway racing game. Dodge traffic, collect gold coins, pick up nitro boosters, and set distance records.

Learning

Spelling Bee & Word Game

Interactive audio spelling practice game for kids and learners. Voice pronunciation, sentence context clues, scrambled letter tiles, and custom word lists.

Attendance Calculator

Calculate college/school attendance percentage and figure out how many classes you can skip or must attend to meet required criteria.

CGPA Calculator

Calculate cumulative grade point average (CGPA) and semester GPA with custom credit weights and grade point scales.

GPA Calculator

Calculate high school or college GPA on 4.0, 5.0, or 10.0 grading scales with unweighted and weighted honors/AP credits.

Marks & Percentage Calculator

Calculate aggregate exam marks, overall percentage, grade class distinction, and subject-wise score distribution.

Percentage to CGPA Converter

Convert academic percentage to 10-point CGPA or 4.0 GPA and vice-versa using CBSE, UGC, and university conversion formulas.

Final Exam Grade Calculator

Determine the exact score you need on your final exam to achieve your desired target course grade.

Math

Fraction Calculator

Add, subtract, multiply, divide proper and improper fractions and mixed numbers with step-by-step simplification.

Exam Helper

Govt Exam Age Eligibility Calculator

Check your age eligibility as of official cutoff dates for UPSC, SSC CGL, Banking, Railway, and State PSC notifications.

Study Planner & Schedule Maker

Generate structured daily and weekly exam study timetables with topic distribution and revision breaks.

Research

Citation & Bibliography Generator

Generate accurate APA 7, MLA 9, Chicago, and Harvard references for books, journal articles, websites, and research papers.

Math Worksheet Generator

Create customized, printable elementary math practice worksheets (addition, subtraction, multiplication, division) with answer keys.

Professional

Email Signature Maker

Design professional HTML email signatures for Gmail, Outlook, Apple Mail with company branding, social links, and avatars.

Timestamp Converter

Convert Unix epoch timestamps (seconds/milliseconds) to human-readable date-time formats, and vice-versa.

Date to Unix Timestamp

Convert calendar dates and times to Unix epoch timestamps in seconds and milliseconds.

Unix Timestamp to Date

Convert Unix epoch timestamps to UTC, local, ISO 8601, and human-readable date strings.

Time Zone Converter

Compare time across global timezones (UTC, EST, PST, IST, GMT, JST) with visual daylight indicators.

Days Between Dates

Calculate exact total number of days, weeks, months, and years between two calendar dates.

Date Difference Calculator

Find full difference between two timestamps down to years, months, days, hours, minutes, and business days.

Add Days to Date

Add business days, calendar days, weeks, or months to any starting date to find the future target deadline.

Subtract Days from Date

Subtract days, weeks, or months from a specified date to calculate past historical milestones.

Days to Date Calculator

Convert a count of elapsed days into equivalent years, months, and remaining days.

Date to Days Converter

Determine day count from the start of the year (Day of Year) or Julian day number for any date.

Countdown

Event Date Countdown

Create live countdown clocks for holidays, weddings, birthdays, new year, and launch milestones.

Timer

Online Stopwatch & Timer

Precision multi-lap stopwatch and interval countdown timer with custom alarm audio alerts.

Productivity

Business Days Calculator

Count total working days between dates excluding weekend Saturdays and Sundays with optional holiday dates.

Productivity

Working Days & Hours Calculator

Calculate total billable working days and working hours for project sprint scheduling and payroll.

ISO Week Number Calculator

Find the ISO 8601 calendar week number for any date and view starting and ending dates for all 52 weeks.

Leap Year Checker

Check if any given year is a leap year with astronomical explanations and leap year list from 1900 to 2100.

Image Compressor

Compress PNG, JPEG, and WebP images client-side while preserving maximum visual clarity and reducing file size up to 90%.

Image Resizer

Resize images by pixels or percentage. Maintain aspect ratios, select scaling algorithms, and export in custom formats.

WebP Converter

Convert PNG, JPG, BMP, and GIF images to modern next-gen WebP format or convert WebP images to JPG/PNG.

Interactive Image Cropper & Resizer

Crop and resize images with preset aspect ratios, custom crop selections, exact pixel dimensions, and percentage scaling.

Image to Base64

Encode any image file into a Base64 string. Copy raw data, data URI, HTML image tags, or CSS background syntax instantly.

PDF to Excel Converter

Extract tables and tabular data from PDF documents into editable Excel spreadsheets (.xlsx, .csv). Multi-page support, instant table preview, and 100% client-side privacy.

PDF to HD Image

Convert PDF pages to high-definition PNG or JPEG images. Unlock password-protected PDFs and download individual pages or packaged ZIPs.

PDF & Image Combiner

Merge and combine multiple PDF files and images into a single PDF document. Rearrange pages, adjust sizes, and preview client-side.

PDF Editor & Annotator

Annotate, draw, highlight, insert text, sign, and redact confidential areas in PDF documents directly in your browser.

PDF Optimizer & Compressor

Compress heavy PDF documents, downsample raster images, and remove redundant metadata to reach target file size limits.

Passport Photo Maker

Create, crop, adjust, and print passport-size photos. Generate custom layouts for A4, Letter, 4x6, or 5x7 papers with cutting guides.

Exam Helper

Govt Exam Photo & Sign Resizer

Resize photos and signatures precisely to exact KB, DPI, and CM dimensions required for SSC, UPSC, IBPS, and State exams.

Document

Word to PDF Converter

Convert DOCX & DOC Word documents to PDF while preserving 100% of the original formatting, fonts, margins, images, and tables.

Document

Word to JPG Converter

Convert Word DOCX & DOC documents to HD JPG or PNG images with exact formatting preservation. Export single pages or ZIP archive.

Wall Area Calculator

Calculate total surface area of interior and exterior walls. Deduct door and window openings accurately for painting or plastering.

Brick & Mortar Calculator

Estimate total bricks, cement bags, and sand volume needed for masonry walls with 1:4 and 1:6 mortar ratios and wastage buffer.

Cement Bag Estimator

Calculate required cement bags for concrete slabs, plastering, flooring, and brickwork across standard nominal mix grades.

Concrete Volume & Mix Calculator

Calculate wet and dry volume of concrete in cubic meters (cum) and cubic feet (cft) for slabs, beams, columns, and footings.

Sand & Aggregate Estimator

Estimate coarse sand (river sand / M-sand) and gravel aggregates in tons, brass, and cubic feet for civil construction.

Flooring Tile & Material Calculator

Estimate floor tiles, vinyl planks, or hardwood planks required for any room with joint grout and cutting wastage factors.

Wall & Bathroom Tile Calculator

Compute the number of ceramic/vitrified wall and floor tile boxes needed for bathrooms, kitchens, and living spaces.

Paint & Primer Quantity Calculator

Calculate liters of primer, putty, and paint required for walls and ceilings based on single or double coat coverage.

Staircase Rise & Run Calculator

Design building stairs: calculate tread depth, riser height, stringer length, and total steps complying with building codes.

Roof Pitch & Area Calculator

Calculate total pitch area and required roofing shingles, metal sheets, or clay tiles for gable, hip, and shed roofs.

Room Area & Perimeter Calculator

Compute floor square footage, perimeter, wall area, and volume for rectangular, L-shaped, and irregular room layouts.

Square Feet (Sq Ft) Calculator

Calculate area in square feet for plots, rooms, and flats from dimensions in inches, feet, yards, or meters.

Square Meter (Sq M) Calculator

Convert and calculate land and floor areas in square meters (sq m) and convert to square feet, acres, and hectares.

India Special

Indian Land Unit Converter

Convert regional Indian land measurement units: Bigha, Guntha, Katha, Ground, Cent, Acre, Hectare, Gaj, and Sq Ft across states.

Geometry

Geometric Area Calculator

Calculate area and perimeter for triangles, circles, trapezoids, ellipses, parallelograms, and polygons.

Loan EMI Calculator

Calculate monthly EMI, total interest, and complete month-by-month amortization schedules for home, car, or personal loans.

SIP Calculator

Forecast mutual fund wealth creation through Systematic Investment Plans (SIP) or one-time Lumpsum investments with growth charts.

RD Calculator

Calculate Recurring Deposit maturity amount, interest earned, and quarterly compounding amortization schedules for banks & post office.

Cumulative Calculator

Calculate cumulative compound growth, cumulative percentage returns (CAGR), and cumulative series running totals with interactive charts.

GST Calculator

Compute inclusive and exclusive Goods and Services Tax (GST) amounts for standard rate slabs (5%, 12%, 18%, 28%).

Salary & Tax Calculator

Break down CTC into monthly in-hand take-home salary, basic pay, HRA, Provident Fund (PF), Professional Tax, and Income Tax.

Loan Affordability Calculator

Determine your maximum eligible loan amount and maximum affordable property value based on monthly income and debt ratios.

Gratuity Calculator

Calculate end-of-service gratuity payout under Payment of Gratuity Act formulas for continuous tenure.

Math

Percentage Calculator

Solve percentage increase/decrease, calculate percentage differences, find proportion of totals, and reverse percentage calculations.

Popular

Age Calculator

Find your exact age in years, months, weeks, days, hours, minutes, and seconds. View upcoming birthday countdown.

Health

BMI & Body Fat Calculator

Calculate your Body Mass Index (BMI), ideal body weight range, healthy caloric intake, and health risk category.

Multi-Unit

Universal Unit Converter

Convert length, mass, volume, temperature, speed, area, energy, power, pressure, and digital storage units accurately.