Tech & Data
File size, data storage, DPI/PPI, aspect ratio, screen size and download time.
QR Code Generator
Turn any text or URL into a downloadable QR code — free & private.
WiFi QR Code
Share your WiFi instantly — guests scan to connect, no typing.
vCard QR Code
Hand out your contact info as a scannable QR — instant address book.
Barcode Generator
Create CODE128, EAN-13, UPC & CODE39 barcodes — instant PNG download.
Email / SMS / Phone QR
Turn an email, SMS or phone number into a one-tap QR code.
QR Code with Logo
Brand your QR code by embedding a logo in the center — still scannable.
QR Code Reader
Scan a QR code with your camera or upload an image — 100% private.
File Size Converter
Convert between B, KB, MB, GB, TB & PB — 1024-based.
Aspect Ratio Calculator
Find the missing dimension for any aspect ratio.
Currency Formatter
Format any number as a currency — 18 currencies & compact notation.
DPI / PPI Calculator
Compute pixel density from resolution & diagonal — and reverse it.
Data Storage Converter
Convert between bit, byte, KB/KiB, MB/MiB, GB/GiB, TB/TiB.
Download Time Calculator
Estimate download time for any file size and connection speed.
Screen Size Calculator
Compute PPI, physical dimensions, and area from resolution + diagonal.
Technology and Data Converters
Technology converters handle digital measurements like file sizes, pixel density, aspect ratios, and screen dimensions. Essential for web developers, designers, and IT professionals.
These converters use industry-standard definitions (1 KB = 1024 bytes for binary, 1 KB = 1000 bytes for decimal) and clearly indicate which system is being used.
Quick access to these conversions saves time during development, design, and technical documentation tasks.