JSON Formatter
Format, validate & minify JSON online free
Mortgage Calculator
Monthly payment with PMI calculator free
TDEE Calculator
Calculate daily calories free online
Password Generator
Generate secure random passwords free
AI Resume Scanner
Beat ATS systems — find missing keywords
Age Calculator
Exact age in years, months, days
Random Number
Generate random numbers
GPA Calculator
Calculate your GPA
Unit Converter
Temp, weight, length, volume
Coin Flip
Heads or tails?
Dice Roller
Roll d4 through d20
Apr 3, 2026 — Added Typing Speed Test, Compare Mortgages, Compare Job Offers, Everyday tools (Age, Random Number, GPA, Unit Converter, Coin Flip, Dice Roller), Personal Dashboard, AI Resume Scanner, tool chaining, and shareable results. 58+ tools!
Apr 1, 2026 — Added Word Counter, Case Converter, Image to Base64, Pomodoro Timer, Countdown Timer, Git Cheat Sheet, HTTP Status Codes, ASCII Table. Amazon affiliate recommendations on all tools.
Mar 30, 2026 — 🚀 LifeStack launched with 32 free tools across dev, finance, health, and travel.
JSON Formatter
Beautify, minify & validate
Base64
Encode & decode text
UUID Generator
v4 UUIDs, one click copy
Regex Tester
Live pattern matching
JWT Decoder
Decode token payloads
Timestamp
Unix ↔ human date
Color Converter
HEX ↔ RGB ↔ HSL
Text Diff
Compare two text blocks
Hash Generator
SHA-256, SHA-1, SHA-512
URL Encode
Encode & decode URLs
Lorem Ipsum
Generate placeholder text
Password Generator
Secure random passwords
QR Code
Generate QR codes
Markdown Preview
Live markdown rendering
Cron Parser
Explain cron expressions
Git Cheat Sheet
Searchable command reference
HTTP Status Codes
Complete code reference
ASCII Table
Character code lookup
Word Counter
Count words & characters
Case Converter
Upper, lower, title case
Image to Base64
Convert images to data URI
Pomodoro Timer
25-min focus sessions
Countdown Timer
Count down to any date
Compound Interest
Watch your money grow
50/30/20 Budget
Needs, wants, savings
Net Worth
Assets minus liabilities
Paycheck
Estimate take-home pay
Mortgage
Monthly payment calculator
Savings Goal
How much to save monthly
Debt Payoff
Payoff time & interest
Hourly ↔ Salary
Convert pay rates
Compare Mortgages
Side-by-side comparison
Compare Job Offers
Total compensation comparison
Percentage
Quick percentage math
Retirement
Are you on track?
Rent vs Buy
Which saves more?
ROI Calculator
Return on investment
TDEE Calculator
Daily calorie needs
Macros
Protein, carbs & fat
BMI
Body mass index
Water Intake
Daily hydration goal
One-Rep Max
Estimate your 1RM
Body Fat %
Navy method estimate
Caffeine Tracker
When will it wear off?
Sleep Cycles
Best time to fall asleep
Protein Intake
Daily protein target
Running Pace
Pace, speed & splits