All 72 tools

Every tool on Gen Code Tools, grouped by category. Everything runs in your browser — no sign-up, and for most tools no data leaves your device.

Life & Time 10

CalendarDays Life in Weeks See your entire life as a grid of 4,680 weeks — past and future. Cake Age Calculator Your exact age down to years, months, days, hours, and seconds. Timer Days Until Countdown to any future date — birthday, deadline, or event. TrendingUp Year Progress How far through the current year are you? Globe Time Zone Converter Convert a time across multiple time zones instantly. Moon Sleep Debt Calculator Track sleep hours across a week and see your accumulated debt. Briefcase Work Hours Calculator Total hours worked in a day, week, or month including breaks. Sunset Retirement Countdown How many days and dollars until you can retire? PieChart Life Percentage What percentage of your expected life have you already lived? History Time Since Exact time elapsed since any past date — in every unit.

Finance 12

Users Meeting Cost Calculator A real-time ticking counter showing how much this meeting costs. TrendingUp Salary Negotiation Compound effect of negotiating salary over your career. Landmark Compound Interest Watch your savings grow with compound interest over time. CreditCard Loan EMI Calculator Calculate monthly repayment for any loan amount and term. Receipt Tip Calculator Split a bill and calculate tip per person in seconds. Split Bill Splitter Split unequal costs between friends — track who owes what. BarChart2 Investment Return Calculate ROI and annualized return on any investment. Minus Break-Even Calculator How many units to sell before you start making profit? Laptop Freelance Rate Calculator What should you charge per hour to hit your income goal? PiggyBank Savings Goal Tracker How much to save monthly to reach any financial goal. CreditCard Credit Card Payoff How long to pay off your balance — and how much interest you'll pay. ShoppingBag Cost Per Use Is that expensive purchase actually worth it? Find out.

Text & Writing 10

Mail Email Tone Analyzer Does your email sound aggressive or passive? Find out before you send. AlignLeft Word Counter Words, characters, sentences, paragraphs — and reading time. BookOpen Reading Time Estimator Paste any text to see how long it takes to read. Type Case Converter Convert text to UPPER, lower, Title, camelCase, and more. Lock Password Generator Generate strong, customizable passwords instantly. FileType Lorem Ipsum Generator Generate placeholder text for mockups and designs. ArrowLeftRight Palindrome Checker Check if a word or phrase reads the same backwards. RefreshCw Text Reverser Reverse any text, word by word or character by character. Link Slug Generator Convert any title into a clean URL slug. ArrowUpDown Text Sorter Sort lines of text alphabetically, reverse, or randomly.

Productivity 8

ListChecks Decision Matrix Score options against weighted criteria to reveal the best choice. Timer Pomodoro Timer Stay focused with structured work and break intervals. Shuffle Random Decision Maker Flip a coin, roll a die, or spin a wheel to decide anything. Grid2x2 Priority Matrix Sort tasks by urgency and importance using the Eisenhower method. Flame Habit Streak Calculator How long until a habit becomes automatic? Calculate your streak. Target Goal Calculator Break any goal into daily micro-actions. ClipboardList Meeting Agenda Timer Time-box agenda items and keep meetings on track. BrainCircuit Focus Timer Deep work timer with distraction tracking.

Health & Body 8

Scale BMI Calculator Body Mass Index — and what it actually means for your health. Flame Calorie Burn Estimator Calories burned during any activity based on weight and duration. Droplets Water Intake Calculator How much water should you drink based on your weight and activity? Utensils Macro Calculator Daily protein, carbs, and fat targets based on your goal. PersonStanding Ideal Weight Range Your healthy weight range based on height and body frame. Footprints Steps to Calories How many calories did your steps burn today? Clock Fasting Timer Track intermittent fasting windows with a live countdown. Activity Heart Rate Zones Training heart rate zones based on your age for max benefit.

Math & Numbers 8

ArrowRightLeft Unit Converter Length, weight, volume, speed — all conversions in one place. Thermometer Temperature Converter Celsius, Fahrenheit, and Kelvin — convert instantly. Percent Percentage Calculator Any percentage problem — X% of Y, change, increase, decrease. Binary Number Base Converter Binary, octal, decimal, hexadecimal conversions. Hash Prime Number Checker Is a number prime? List primes up to N. Sigma Roman Numeral Converter Convert between Roman numerals and standard numbers. Divide GCD / LCM Calculator Greatest common divisor and least common multiple. Equal Ratio Calculator Simplify ratios and solve proportion problems.

Developer Tools 8

Braces JSON Formatter Beautify, minify, and validate JSON data instantly. Code Base64 Encoder / Decoder Encode or decode Base64 strings in one click. Link2 URL Encoder / Decoder Encode or decode URL components safely. Palette Color Converter HEX, RGB, HSL — convert between any color formats. Clock4 Unix Timestamp Converter Convert between Unix timestamps and human-readable dates. Blend CSS Gradient Generator Build and preview CSS gradients with live code output. Regex Regex Tester Test regular expressions against text with live highlighting. Fingerprint UUID Generator Generate multiple UUIDs v4 instantly.

Unique Insights 8

BrainCircuit Cognitive Load Scorer How hard is your text to read? Go beyond Flesch-Kincaid. HelpCircle Is This Meeting Worth It? A brutally honest calculator for meeting ROI. Hourglass Procrastination Cost How much does delaying a task actually cost you? MailOpen Email Subject Scorer Score your subject line for open-rate potential. Scale Negotiation Power Index Estimate your leverage before any negotiation. TrendingUp Life ROI Calculator Which life activities give you the highest return on time? CircleDot Coin Flip Revealer Flip a coin — then see how you feel about the result. Hash Name Numerology Assign numeric values to names and find patterns.

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