Small utilities, free to use
Everything below runs entirely in your browser — nothing is uploaded, stored, or sent anywhere. Use them as much as you like.
Calculators
Age Calculator
Exact age breakdown from a date of birth.
Open →BMI Calculator
Body Mass Index from height and weight.
Open →Percentage Calculator
Three common percentage calculations in one place.
Open →EMI Calculator
Estimate monthly loan payments.
Open →Date Difference
Days, months, and years between two dates.
Open →Scientific Calculator
Standard functions — sin, cos, log, powers, roots.
Open →Discount Calculator
Find the final price and how much you save.
Open →GPA / CGPA Calculator
Weighted grade-point average from subject grades and credits.
Open →Zakat Calculator
2.5% of zakatable wealth above the nisab threshold you set.
Open →Converters
Color Converter
HEX, RGB, and HSL — all synced together.
Open →Unit Converter
Length, weight, and temperature conversions.
Open →Base64 Encoder / Decoder
Text to Base64 and back, Unicode-safe.
Open →Currency Converter
Live exchange rates — needs an internet connection.
Open →CSV ↔ JSON Converter
Convert between CSV and JSON in either direction.
Open →Text & Data
JSON Formatter
Format, validate, or minify JSON.
Open →XML Formatter
Pretty-print XML with consistent indentation.
Open →Markdown Preview
Live preview of headings, bold, links, and lists.
Open →Text Compare
Highlights word-level differences between two texts.
Open →Word & Character Counter
Counts words and characters in English and Bengali.
Open →URL Encoder / Decoder
Encode or decode text for safe use in a URL.
Open →Slug Generator
Turn a title into a clean, URL-friendly slug.
Open →Dummy Text Generator
Placeholder paragraphs in English or Bengali.
Open →Regex Tester
Test a pattern against sample text, matches highlighted.
Open →Case Converter
UPPERCASE, lowercase, Title Case, camelCase, snake_case.
Open →Text-to-Speech Preview
Hear text read aloud using your browser's voices.
Open →Generators
Password Generator
Random, secure passwords generated locally.
Open →UUID Generator
Version-4 UUIDs, one or many at once.
Open →QR Code Generator
Turn any text or URL into a scannable QR code.
Open →Network
Subnet Calculator
Network range, mask, and usable host count from an IP + CIDR.
Open →Transfer Time Calculator
Estimate file transfer time at a given connection speed.
Open →MAC Address Formatter
Validate and reformat a MAC address, show its OUI prefix.
Open →DNS Record Syntax Checker
Checks record syntax for A, AAAA, CNAME, MX, TXT, NS — not a live lookup.
Open →MikroTik Command Generator
Builds a RouterOS simple-queue bandwidth-limit command.
Open →User-Agent Parser
Breaks a user-agent string into browser, engine, and OS.
Open →File Tools
PDF Converter
Combine one or more images into a single PDF.
Open →Image Compressor
Reduce image file size directly in your browser.
Open →Image Format Converter
Convert an image between PNG, JPG, and WebP.
Open →Image Resizer
Resize an image to exact dimensions or a percentage.
Open →Favicon Generator
Generate standard favicon sizes from one image.
Open →File Hash Checker
Compute SHA-1 / SHA-256 / SHA-512 checksums for a file.
Open →Bangla Tools
Banglish to Bangla Typing
Type English/Banglish phonetically, get Bengali script.
Open →Bangla Calendar Converter
Approximate Gregorian → Bengali calendar (বঙ্গাব্দ) conversion.
Open →Number to Bangla Words
Convert a number into Bengali words — handy for cheques.
Open →NID / Birth Reg. Format Checker
Checks number length/format only — no government lookup.
Open →Need something more custom?
If a small utility like these would help your team or business, I can build one tailored to your exact workflow.