Online tools for everyday life
Fast, accurate calculators and generators — everything runs right in your browser.
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Age Calculator
Calculate exact age in years, months, and days from a date of birth.
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to readable text, with UTF-8 support.
Blood Pressure Calculator
Classify your blood pressure reading into the standard category.
BMI Calculator
Calculate your Body Mass Index instantly with metric units and see which weight range you fall into.
BMR & TDEE Calculator
Calculate your Basal Metabolic Rate (Mifflin-St Jeor) and Total Daily Energy Expenditure.
Bonus Tax Calculator (Thailand)
Estimate withholding tax on a bonus under Thailand's two methods — lump-sum or combined with salary.
Car Loan Calculator (Thailand)
Estimate monthly instalment, down payment, and total interest for a car loan.
Case Converter
Convert text between UPPER, lower, Title Case, camelCase, snake_case, and kebab-case.
Color Converter (HEX/RGB/HSL)
Convert colors between HEX, RGB, and HSL instantly, with a live color preview.
Countdown Timer
Count down days, hours, minutes, and seconds to any target date and time.
Currency Converter (THB)
Convert between Thai Baht and major world currencies with live ECB reference rates (auto-fallback to saved rates offline).
Date Difference Calculator
Count days, weeks, months, and years between two dates.
Discount Calculator
Work out the final price after a percentage discount, plus the amount saved.
Dividend Calculator
Calculate dividend income and yield from shares held and dividend per share.
Pregnancy Due Date Calculator
Estimate your delivery due date and current pregnancy week using Naegele's rule.
Electricity Bill Calculator (Thailand)
Estimate your monthly electricity bill using the Thailand MEA/PEA progressive tariff plus the current FT rate.
GPA Calculator
Compute your Grade Point Average from courses and credit units (4.0 scale).
Hourly Rate Calculator
Convert salary between monthly, daily, and hourly rates for Thailand's standard 8-hour workday.
Thai ID Card Validator
Validate a 13-digit Thai national ID card number using its checksum, and decode what each part means.
Ideal Weight Calculator
Find your ideal body weight using the Devine and Hamwi formulas based on height and sex.
Personal Income Tax Calculator
Estimate your Thai personal income tax (PIT) from annual taxable income using the 2024 progressive brackets.
Invoice Generator
Build a professional invoice with items, quantities, prices, and optional 7% VAT — ready to copy.
JSON Formatter & Validator
Beautify, minify, and validate JSON. Catch syntax errors with a clear message.
Loan Payment Calculator
Work out the monthly instalment and total interest for any loan using the standard amortisation formula.
Lorem Ipsum Generator (Thai)
Generate Thai filler text for design mockups and layout testing.
Mortgage Calculator (Thailand)
Estimate monthly mortgage payment, down payment, and total interest for a home loan.
Net Salary Calculator (Thailand)
Convert your gross monthly salary into take-home pay after Thai social security contributions.
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal.
Number to English Words
Convert any number into English words (12345 → twelve thousand three hundred forty-five).
Number to Thai Words Converter
Convert any number into Thai words (12345 → หนึ่งหมื่นสองพันสามร้อยสี่สิบห้า). Also converts Thai numerals to Arabic and back.
Overtime (OT) Calculator (Thailand)
Estimate overtime pay under Thailand's Labour Protection Act: 1.5x weekday, 2x holiday, 3x holiday OT.
Password Generator
Generate a strong random password with custom length and character sets.
Password Strength Checker
Analyze a password for length, character variety, common patterns, and estimate crack time.
Percentage Calculator
Three modes — find % of a number, find what % one number is of another, or % change.
AI Prompt Generator
Generate structured prompts for ChatGPT/Claude/Midjourney from your goal — copy and paste.
QR Code Generator
Generate a QR code from a URL or text instantly, fully in your browser.
Random Number Generator
Generate one or more random numbers in any range, with optional uniqueness.
Random Name Picker
Pick a random name or item from a list — perfect for classrooms, raffles, or decisions.
Salary Proration Calculator
Calculate prorated salary when joining or leaving mid-month, by working days.
Savings Interest Calculator
Calculate interest on a savings or fixed deposit, with optional monthly compounding.
SHA-256 Hash Generator
Generate SHA-256 hashes of text or file content using the browser's native crypto API.
Sleep Cycle Calculator
Best times to wake up or fall asleep based on 90-minute sleep cycles, so you avoid grogginess.
URL Slug Generator
Convert titles and text into SEO-friendly URL slugs, including Thai transliteration.
Text Diff Checker
Compare two texts line by line and highlight what was added, removed, or changed.
Text Reverser
Reverse characters, words, or lines of any text — useful for puzzles and formatting.
Unix Timestamp Converter
Convert Unix timestamps to readable dates and back — for developers and SQL queries.
Tip Calculator
Split a bill and add a tip across any number of people.
Unit Converter
Convert between length, weight, and temperature units instantly.
Vacation Day Calculator
Count working days in a date range excluding Thai public holidays and weekends.
VAT Calculator (Thailand)
Add or remove 7% Thai VAT from any amount. Switch between "from net" and "from gross".
Word Counter
Count words, characters, sentences, paragraphs, and estimate reading time.