Free Tools
Handle images, text, numbers and data formats without digging through random sites.
Images and social assets
Compress images, check social sizes and convert colors.
Quotes, tax and business numbers
Invoice tax, loans, Chinese amount and business calculators.
Data format and debugging
JSON, Base64, URL encoding, timestamps and hashes.
Everyday calculations
BMI, percentages, units, age, countdowns and overtime.
QR Code Generator
Turn a URL, text, phone, email or Wi-Fi login into a downloadable QR code.
Image Compressor
Compress JPG/PNG/WebP right in your browser — files never upload, fully private.
Invoice / Tax (VAT) Calculator
Enter an amount to get the net, tax (5%) and gross total — handy for quotes and invoices.
Delivery Rider Income Calculator
Estimate monthly net income and net hourly pay from orders, pay, hours and vehicle costs.
Delivery Quest Bonus Calculator
Enter tiered Uber Eats or foodpanda quests to estimate trips, bonus value and net hourly pay.
Cake Cost / Pricing Calculator
Enter ingredients, labor, packaging, waste and fees to estimate cake price and margin.
Bakery Capacity Planner
Estimate daily order capacity from staff, ovens, cold storage and finishing time.
Shop Break-even Calculator
Estimate how many orders per day are needed to cover rent, payroll, materials and fees.
Password Generator
Generate strong random passwords with custom length and character types — fully private.
Word Counter
Count words, characters, sentences and paragraphs in real time — great for writing.
BMI Calculator
Enter your height and weight to get your BMI and weight category instantly.
Loan / Mortgage Calculator
Enter amount, rate, term and income to estimate payment, interest and rate stress.
Overtime Pay Calculator (Taiwan)
Enter salary and overtime hours to break down weekday and rest-day OT pay under Taiwan labor law.
Social Media Image Sizes
Look up the latest recommended image sizes for Facebook, Instagram, YouTube, LINE and more.
JSON Formatter / Validator
Paste JSON to beautify, minify and validate — runs locally, your data stays private.
Color Converter
Convert between HEX, RGB and HSL instantly, with a color picker and one-click copy.
Base64 Encoder / Decoder
Convert text to and from Base64 instantly, with UTF-8 support — runs locally.
Unit Converter
Convert length, weight and temperature instantly — common units in one place.
Age Calculator
Enter your birth date to get your exact age, total days lived and days to your next birthday.
Percentage Calculator
Three modes: percent of a value, what-percent ratio, and percent change.
Unix Timestamp Converter
Convert timestamps to dates and back, with a live current timestamp and auto s/ms detection.
URL Encoder / Decoder
Percent-encode and decode URLs and text instantly, with full UTF-8 support.
Number to Chinese Amount
Convert a numeric amount into the formal Chinese capital characters used on cheques.
Random Number / Picker
Generate a random number in a range, or randomly pick one name from a list.
Countdown Timer
Set a target date and count down the days, hours, minutes and seconds live.
SHA Hash Generator
Generate SHA-1/256/384/512 hashes from text instantly, fully in-browser.
Text Case Converter
Convert text to UPPERCASE, lowercase, Title Case or Sentence case in one click.
NHI Supplementary Premium Calculator (Taiwan)
Pick bonus, dividend, rent, part-time wage and more to estimate the 2.11% premium.