World-Class Free Student & Developer Tools

Every Tool You Need,
100% Free Worldwide.

35+ high-speed AI tools, academic calculators, and developer utilities built for students, professionals, and creators across the globe.

Viral Creator, Social & Finance Tools (Global)

📜
VERIFICATION
Typing Speed Certificate Verification
Verify official WPM speed and accuracy certificates issued by PreetBeacon Typing Test system.
Open Tool
🔥
WEALTH & RETIREMENT
FIRE (Financial Independence Retire Early) Calculator
Calculate your FIRE number, savings rate, years to financial freedom, and safe withdrawal rate (4% rule).
Open Tool
🛡️
PERSONAL FINANCE
Emergency Fund Savings Buffer Calculator
Calculate your target emergency fund buffer based on essential monthly living expenses, debt obligations, and family size.
Open Tool
🎓
COLLEGE FINANCE
Student Loan Payoff & Interest Calculator
Calculate monthly student loan repayments, interest savings through refinancing, and accelerated payoff schedules.
Open Tool
💎
WEALTH MANAGEMENT
Personal Net Worth Tracker Calculator
Calculate your total personal net worth by tallying cash, real estate, stocks, and deducting credit cards, mortgages, and personal loans.
Open Tool
📉
MACRO ECONOMICS
US Inflation & Purchasing Power Calculator
Calculate the cumulative impact of inflation on purchasing power over time using official CPI price index metrics.
Open Tool
📊
INVESTING & STOCKS
Stock Trade Profit & Capital Gains Calculator
Calculate net profits, return percentage, brokerage commission, and capital gains tax on stock trades.
Open Tool
🪙
CRYPTO & WEB3
Crypto Dollar Cost Averaging (DCA) Calculator
Simulate recurring daily, weekly, or monthly crypto purchases (Bitcoin, Ethereum, Solana) and calculate historic portfolio value.
Open Tool
💵
PASSIVE INCOME
Dividend Reinvestment (DRIP) Calculator
Calculate long-term passive dividend income, compounding shares, and dividend reinvestment plan (DRIP) growth over time.
Open Tool
🏠
MORTGAGE & EQUITY
Home Equity Loan & HELOC Calculator
Calculate available home equity, loan-to-value (LTV) limits, and monthly HELOC repayments based on home value and remaining balance.
Open Tool
📈
INDEX INVESTING
Monthly Investment Compound Growth Calculator
Calculate long-term compound interest growth with monthly recurring contributions into index funds like S&P 500 (VOO, SPY).
Open Tool
📏
BODY COMPOSITION
US Navy Body Fat Percentage Calculator
Accurately estimate body fat percentage and lean muscle mass using the US Navy tape measurement method.
Open Tool
⚖️
CLINICAL HEALTH
Ideal Body Weight (IBW) Calculator
Calculate your healthy ideal body weight range based on height, gender, and clinical formulas (Devine, Robinson, Miller).
Open Tool
⏱️
BIOHACKING & NUTRITION
Intermittent Fasting Window Calculator
Track daily intermittent fasting windows (16:8, 18:6, 20:4 OMAD). Calculate eating window end times and autophagic metabolic stages.
Open Tool
🌸
WOMEN HEALTH
Ovulation & Fertile Window Calculator
Calculate peak ovulation dates, most fertile days, and estimated due date based on menstrual cycle length.
Open Tool
❤️
SPORTS SCIENCE
Target Heart Rate Training Zone Calculator
Calculate resting, fat-burning zone, aerobic zone, and peak VO2 max target heart rates using the Karvonen formula.
Open Tool
📊
BUSINESS ANALYTICS
Business Break-Even Analysis Calculator
Calculate break-even units and revenue volume needed to cover fixed and variable business operating expenses.
Open Tool
🎯
GROWTH MARKETING
Customer Acquisition Cost (CAC) Calculator
Calculate Blended and Paid CAC, marketing efficiency ratio, and payback duration across ad channels.
Open Tool
🔥
STARTUP SUITE
Startup Cash Runway & Burn Rate Calculator
Calculate monthly net burn rate and surviving cash runway for seed and venture-backed software startups.
Open Tool
🎙️
CREATOR ECONOMY
Podcast Sponsorship Revenue Calculator
Calculate podcast advertising income based on downloads per episode, baked-in ads, dynamic ad insertion, and CPM rates.
Open Tool
💰
AFFILIATE WEALTH
Affiliate Marketing Revenue Calculator
Forecast affiliate blog and newsletter earnings based on monthly traffic, click-through rate (CTR), conversion rate, and commission percentage.
Open Tool
🔑
DEVELOPER SUITE
Fast Client-Side JWT Decoder
Fast, secure JSON Web Token (JWT) decoder. Inspect headers, payload claims, and expiration timestamps without sending sensitive tokens to any server.
Open Tool
⚡
DEV TOOLS
Live Regular Expression (RegEx) Tester
Test and debug JavaScript regular expressions in real-time with capture group extraction, flags, and match highlights.
Open Tool
🔢
SECURITY & DEV
Bulk UUID / GUID v4 Generator
Generate cryptographically secure random UUID v4 / GUID identifiers in bulk (uppercase, lowercase, with/without hyphens).
Open Tool
🎨
WEB DESIGN
Interactive CSS Gradient Generator
Design beautiful linear and radial CSS background gradients with interactive color pickers and instant CSS copy.
Open Tool
⚡
DEV SPEED
Online HTML Minifier & Compressor
Compress and minify HTML markup by stripping whitespaces, comments, and empty lines to accelerate page load speeds.
Open Tool
📖
CONTENT & ESSAY
Reading Time & Speech Duration Calculator
Estimate the average reading time and speech presentation duration for essays, articles, and speeches.
Open Tool
💵
BANKING & LOANS
Simple Interest & Principal Yield Calculator
Calculate simple interest accrued over time on short-term loans, bonds, and personal promissory notes (I = P * r * t).
Open Tool
📅
DATE & TIME
Days Between Dates & Duration Calculator
Calculate the exact number of days, weeks, months, and business days between any two calendar dates.
Open Tool
📈
MATH UTILITY
Percentage Increase & Difference Calculator
Quickly calculate percentage change, price hikes, inflation growth, or sales discounts between initial and final values.
Open Tool
🚶
FITNESS & WALKING
Calories Burned Walking Calculator
Calculate calories burned walking based on step count, distance, body weight, and walking speed.
Open Tool
🔗
SEO TOOLS
SEO Friendly URL Slug Generator
Convert article titles and strings into clean, search engine optimized URL slugs by removing special characters and accents.
Open Tool
🔒
CYBERSECURITY
Password Strength & Entropy Checker
Test password security, crack time estimation, and Shannon bit entropy against brute-force attacks. 100% Client-side.
Open Tool
📝
DEV UTILITY
Lorem Ipsum Markdown Generator
Generate dummy Markdown text with headings, bold text, blockquotes, lists, and code blocks for web developers.
Open Tool
🖼️
DEV & ENCODING
Image to Base64 Data URI Encoder
Convert JPG, PNG, and SVG images to Base64 data URIs for embedding directly into HTML, CSS, and API payloads.
Open Tool
🔄
DATA ENGINEERING
Online CSV to JSON Converter
Parse and convert CSV text and Excel export rows into formatted JSON array objects directly in the browser.
Open Tool
🔗
DEV UTILITY
Online URL Encoder & Decoder
Encode and decode query strings, special parameters, and URLs using encodeURIComponent and decodeURIComponent.
Open Tool
🔤
TEXT UTILITIES
Text Case Inverter & Multi-Case Converter
Convert text strings to title case, camelCase, snake_case, kebab-case, and invert uppercase/lowercase characters instantly.
Open Tool
🎲
MATH & CHANCE
Cryptographic Random Number Generator
Generate truly random numbers within any range (min/max), roll multiple dice, and draw non-repeating lottery raffle numbers.
Open Tool
🏃
FITNESS & RUNNING
Calories Burned Running & Jogging Calculator
Calculate calories burned running based on body weight, distance, running pace (minutes per mile/km), and duration.
Open Tool
🚗
AUTOMOTIVE FINANCE
Vehicle Depreciation & Resale Value Calculator
Estimate the future resale value and cumulative annual depreciation curve of new and used cars over 1 to 10 years.
Open Tool
🏙️
REAL ESTATE BUDGET
Rent Affordability & Budget Calculator
Calculate how much rent you can afford based on the standard 30% monthly income rule and NYC 40x annual salary rule.
Open Tool
💵
PAYROLL & SALARY
Hourly Wage to Annual Salary Converter
Convert hourly wage into weekly, bi-weekly, monthly, and annual gross earnings assuming 2,080 working hours.
Open Tool
🍷
HEALTH SAFETY
BAC Blood Alcohol Concentration Calculator
Estimate Blood Alcohol Concentration (BAC) and time to reach 0.00% sobriety using the clinical Widmark equation.
Open Tool
⛽
TRAVEL & COMMUTE
Gas & Fuel Cost Trip Calculator
Calculate total fuel cost, gas mileage (MPG/Liters), cost per mile, and road trip travel budget with custom fuel prices.
Open Tool
⚡
EV & ENERGY
Electric Vehicle (EV) Charging Calculator
Calculate EV charging cost per full battery, charging time (Level 1, Level 2, DC Fast), and annual electricity savings vs gas.
Open Tool
🏡
REAL ESTATE FINANCE
Rent vs Buy Home Affordability Calculator
Compare the true long-term financial cost of renting an apartment versus buying a house factoring in mortgage interest, property tax, and equity appreciation.
Open Tool
💳
PERSONAL DEBT
Credit Card Debt Payoff Calculator
Calculate how long it will take to pay off credit card debt and see how much money you save by increasing monthly payments.
Open Tool
📈
WEALTH & RETIREMENT
401(k) Retirement & Employer Match Calculator
Forecast your 401(k) retirement portfolio balance at age 65, employee contributions, employer match, and compounding interest returns.
Open Tool
💧
HEALTH & WELLNESS
Daily Water Intake & Hydration Calculator
Calculate how many ounces or liters of water you should drink daily based on body weight, climate temperature, and daily exercise intensity.
Open Tool
🥩
FITNESS & NUTRITION
Macro & Calorie Deficit Cutting Calculator
Calculate custom macronutrient targets (grams of protein, carbs, fats) and calorie deficit for fat loss, cutting, and lean muscle building.
Open Tool
📺
CREATOR SEO
YouTube Video Tag & Keyword Generator
Generate viral, high-ranking YouTube tags, search hashtags, and video keywords to boost views, CTR, and search discoverability.
Open Tool
🖥️
HARDWARE & DEV
Screen DPI & Pixel Density (PPI) Calculator
Calculate screen pixel density (PPI/DPI), total pixel count, dot pitch, and aspect ratio from diagonal screen size and resolution.
Open Tool
📊
DATA ENGINEERING
Free Online JSON to CSV Converter
Convert JSON arrays and objects to clean CSV format with instant table preview and 1-click download. 100% Client-side and secure.
Open Tool
💵
DAILY UTILITY
Tip & Split Bill Calculator
Calculate restaurant tip percentage, split dining checks evenly among guests, and bill individual amounts.
Open Tool
🏷️
GLOBAL FINANCE
Sales Tax & VAT Calculator
Add sales tax to net purchases or reverse calculate pre-tax amounts from gross receipts across US, UK, and EU.
Open Tool
🎓
ACADEMIC GLOBAL
Global GPA Scale Converter (10.0 to 4.0)
Convert Indian 10-point CGPA, UK honours, and German scales to US 4.0 GPA for university study abroad applications.
Open Tool
📝
DEVELOPER SUITE
Live Markdown Editor & HTML Previewer
Real-time Markdown editor with live HTML preview, GFM support, word counter, and instant HTML export.
Open Tool
🖼️
MEDIA SUITE
Image Resizer & PNG/JPEG/WebP Converter
Resize dimensions, compress file size, and convert PNG, JPG, and WebP in seconds 100% locally.
Open Tool
📄
PDF & DOCS
Image to PDF Converter (JPG & PNG)
Convert multiple images into a clean, organized PDF document with custom page ordering.
Open Tool
📑
PDF & DOCS
PDF to Image Converter (High-Res JPG)
Extract and render every PDF page into crisp high-resolution JPG or PNG images instantly.
Open Tool
✂️
AI & GRAPHICS
Instant Background Remover (Transparent PNG)
Remove backgrounds from photos, graphics, and product logos to create transparent PNG cutouts.
Open Tool
🔍
AI & VISION
OCR Image to Text Converter
Extract editable text from scanned documents, photos, and book pages using client-side OCR.
Open Tool
📝
PDF & DOCS
Word to PDF & Document Converter
Convert Microsoft Word (.docx) documents to PDF with zero server upload and formatting preserved.
Open Tool
✨
AI GENERATOR
AI Text to Image Art Studio
Generate high-resolution AI artwork and illustrations from custom text prompts in any aspect ratio.
Open Tool
🧾
GLOBAL B2B
Free Online Invoice Generator
Create professional, multi-currency PDF invoices with automatic tax and discount calculations.
Open Tool
📈
MARKETING & ROI
Business & Marketing ROI Calculator
Calculate Return on Investment, annualized revenue multiple, and payback period.
Open Tool
🚀
STARTUP SUITE
SaaS Metrics & LTV/CAC Calculator
Calculate ARR, MRR, customer churn, and customer lifetime value unit economics.
Open Tool
✉️
BUSINESS UTILITY
HTML Email Signature Generator
Create beautiful, clickable email signatures for Gmail, Outlook, and Apple Mail.
Open Tool
💱
GLOBAL FOREX
Live Currency Converter
Real-time foreign exchange converter supporting 160+ world currencies with ECB rates.
Open Tool
🌍
REMOTE TEAMS
Time Zone Meeting Planner
Visual 24-hour multi-city overlap planner for international distributed teams.
Open Tool
💼
CONSULTING
Freelance Rate & Pricing Calculator
Calculate minimum hourly & day rate accounting for taxes, expenses, and billable hours.
Open Tool
🏠
GLOBAL FINANCE
Mortgage & Loan Calculator
Calculate monthly payments, interest vs principal, and complete amortization schedule.
Open Tool
💵
CAREER
Salary to Hourly Wage
Convert annual salary to hourly, weekly, bi-weekly, and monthly paycheck with overtime.
Open Tool
🔥
FITNESS
TDEE & Calorie Deficit
Mifflin-St Jeor daily energy expenditure, BMR, and macro breakdown for fat loss.
Open Tool
🏷️
WEBMASTER
Meta Tag Generator & Preview
Live visual preview for Google SERP, Twitter Cards, and OpenGraph tags with 1-click copy.
Open Tool
🚗
AUTO FINANCE
Auto Loan & Car Payment Calculator
Estimate monthly car payments, trade-in value, sales tax, and total financing interest.
Open Tool
🪙
CRYPTO INVESTING
Crypto Profit & ROI Calculator
Calculate Bitcoin/Ethereum buy & sell profits, exit targets, and Dollar Cost Averaging (DCA).
Open Tool
🎥
CREATOR ECONOMY
Creator & YouTube Earnings Estimator
Predict AdSense revenue and brand sponsorship rates for YouTube, Shorts, and TikTok.
Open Tool
😴
HEALTH & BIOHACK
Sleep Cycle & Wake-Up Calculator
Calculate 90-minute REM sleep cycles to wake up energized without morning grogginess.
Open Tool
⚡
DEVELOPER UTILITY
SQL Formatter & Query Beautifier
Beautify, indent, and format messy SQL queries instantly with standard keywords.
Open Tool
🔒
SECURITY & CRYPTO
SHA-256 & Hash Generator
Instant client-side cryptographic hashing for SHA-256, SHA-512, MD5, and SHA-1.
Open Tool
VIRAL
Aesthetic Fancy Font Generator
35+ stylish unicode font styles (Cursive, Gothic, Bubbles, Glitch) for Instagram bios, TikTok captions, and Discord names.
Generate Fonts
CREATOR
Viral Hook & Caption Generator
High-retention 3-second opening hooks built on psychology for TikTok, Reels, YouTube Shorts, and X threads.
Get Viral Hooks
FINANCE
Compound Interest & Wealth Calculator
Multi-currency investment growth planner with visual breakdown of monthly contributions and yearly wealth timeline.
Calculate Wealth
SECURITY
Ultra-Secure Password Generator
100% offline cryptographic password maker with live entropy bits auditor and brute-force crack time estimator.
Generate Password
REMOTE
World Timezone & Meeting Planner
Interactive 24-hour slider showing simultaneous times in San Francisco, New York, London, Tokyo, and Sydney.
Plan Meetings
12+ GAMES
Retro Arcade Game Zone
Instant browser retro gaming: Snake, 2048, Flappy Bird, Reaction Speed, Breakout & Sudoku. Zero download.
Play Games

Global Academic Suite (US / Canada / International)

POPULAR (US/CA)
4.0 GPA Calculator
Standard college & high school GPA calculator with Letter Grades (A+, A, B, C), credit hours, and target GPA planning.
Open Calculator
100% PRIVATE
PDF Master Suite
Merge multiple PDFs or extract pages in seconds. 100% in-browser processing — files never upload to any server.
Open PDF Suite
NEW
Citation Generator
Instant APA 7, MLA 9, Harvard & Chicago reference generator for research papers, websites, and essays.
Create Citations
10.0 SCALE
CGPA to Percentage
Accurate 10.0 scale university CGPA/SGPA converter for engineering and degree college students.
Calculate CGPA

Global High-Traffic Utilities & Productivity Suite (100% In-Browser)

VIRAL
Exact Age & Life Tracker
Calculate exact chronological age down to the second, total days lived, heartbeats, next birthday countdown & planet ages.
Calculate Age
HOT
Pomodoro Focus Timer
Scientific 25/5 interval study clock with ambient audio chimes, task checklist, streak tracking, and fullscreen mode.
Start Focus
DEV
JSON Formatter & Validator
Beautify, validate, minify, and inspect JSON payloads with interactive collapsible tree view and line error pointers.
Format JSON
GLOBAL
Universal Unit Converter
Fast 2-way conversion for length, mass (lbs to kg), temperature (C to F), digital data, speed, and volume with formulas.
Convert Units
UTILITY
Universal Case Converter
Transform text to UPPERCASE, lowercase, Title Case, camelCase, snake_case, and kebab-case with live word count stats.
Convert Case
VIRAL
Internet Speed Test & Ping Meter
Accurate real-time WiFi, 5G, and broadband speed test. Measures download Mbps, upload rate, ping, and network jitter.
Test Speed
HOT
Reaction Time & Reflex Benchmark
Test your neurological reaction speed in milliseconds. Compare your reflexes against global gaming percentiles.
Test Reflexes
HEALTH
BMI & Daily Calorie TDEE Analyzer
Calculate Body Mass Index (BMI), healthy weight range, BMR, and daily maintenance calories with zero data storage.
Analyze Health
DESIGN
Aesthetic Color Palette Generator
Press spacebar to generate harmonious color schemes, lock colors, inspect WCAG accessibility, and export CSS root variables.
Generate Palette
OCR VISION
Handwritten → Digital Text
Client-side WebAssembly OCR to extract clean editable text from notebook photos, scans, and PDFs with zero server uploads.
Scan Image
VIRAL
Live Word Counter & Stats
Real-time word, character, sentence, reading time, speaking pace, and top keyword density tracker for essays and articles.
Count Words
MATH
Multi-Mode Percentage Calculator
Solve percentage increase, decrease, what is X% of Y, and store discounts with step-by-step mathematical formulas.
Calculate %
DESIGN
Lorem Ipsum Dummy Generator
Generate custom placeholder dummy text in paragraphs, sentences, or words with HTML tags and 1-click clipboard copy.
Generate Text
DEV
Base64 Text & Image Encoder
Convert UTF-8 text and image files (PNG, JPG, SVG) to Base64 strings and CSS data URLs 100% in-browser.
Encode Base64

Developer & Tech Productivity

DEV SUITE
Developer Utilities
JSON Beautifier & Validator, Base64 Encoder/Decoder, SHA-256 Hash generator, and URL Tools in one place.
Open Dev Suite
CERTIFIED
Typing Speed Master
Measure your WPM, typing accuracy, and earn an authentic verifiable certificate to share on LinkedIn.
Test Your Speed
INSTANT
Custom QR Generator
Create high-resolution QR codes for websites, WiFi, and contact cards with custom colors and logo embedding.
Create QR Code
FOCUS OS
LocalBrain Student OS
A full distraction-free desktop operating system inside your browser. Offline coding, notes, and focus timer.
Launch OS

Career & Placement Arena

ATS PRO
ATS Resume Builder
Build modern, recruiter-approved resumes tested against automated Applicant Tracking Systems. 100% Free.
Build Resume
LIVE RADAR
Global Hackathon Radar
Track active and upcoming hackathons, AI coding competitions, and student grants with prize pools and deadlines.
Explore Hackathons
PREP
HR Interview Master
Top 50+ behavioural and technical HR interview questions with model STAR-framework answers and strategies.
Practice Questions

AKTU Hub (India's Dedicated Engineering Portal)

MAIN HUB
AKTU Command Hub
All-in-one portal for AKTU B.Tech students. Free semester notes, syllabus, PYQs, and OneView result links.
Visit AKTU Hub
1ST YEAR
AKTU 1st Year Portal
Complete study materials for common first-year subjects: Engineering Math, Physics, Chemistry, and Electrical.
Open 1st Year
CSE
CSE 2nd Year Suite
Data Structures, Computer Organization (COA), Discrete Maths, and Operating Systems comprehensive notes.
Open CSE 2nd Year
QUANTUM
AKTU Quantum Series
Free access to AKTU short-answer exam quantum preparation guides organized by subject and semester.
View Quantums
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