Convert data sizes between bytes, KB, MB, GB, TB, and PB. Understand disk space and file sizes in different units. Everything runs locally in your browser — nothing is uploaded.
Convert between bytes, kilobytes, megabytes, and more
Compare and convert between A0, A1, A4, Letter, and Legal paper sizes. Understand how many sheets of one size fit into another.
Convert clothing sizes between US/Canada, UK, EU, Japan, and France sizing systems. Supports women's apparel size conversions with international standards.
Bidirectional converter between iCalendar (ICS) and CSV formats. Migrate events between Google Calendar, Outlook, Apple Calendar, and spreadsheets.
Convert between 100+ units across 16 categories — length, weight, volume, area, speed, power, pressure, temperature, time, data size, cooking, fuel consumption, paper sizes, and clothing sizes.
Reduces JPG, PNG, and WebP file sizes using smart compression with a side-by-side quality preview slider. Balance file size and visual quality visually — max 20MB per image. Perfect for web optimization, email attachments, and social media uploads.
Data Size Converter lets you convert data sizes between bytes, KB, MB, GB, TB, and PB. Understand disk space and file sizes in different units. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Convert data sizes between bytes, KB, MB, GB, TB, and PB. Understand disk space and file sizes in different units. Everything runs locally in your browser — nothing is uploaded. It runs entirely in your browser — no software installation or data uploads required.
Direct text entry, file upload, or URL-based input — depending on the tool. Common file formats are supported for upload-based tools.
Yes. After the initial page load, Data Size Converter runs entirely on your device with no internet connection needed. All processing is done locally.
Yes, this tool is completely free with no usage limits, registration, or credit card required.
All processing happens locally in your browser. Your data is never uploaded to any server.
Yes. After the initial page load, the tool runs entirely offline without requiring an internet connection.
No. You can use this tool unlimited times with no quotas or restrictions.
Any modern web browser (Chrome, Firefox, Safari, Edge) on desktop or mobile. No installation needed.
Privacy Cleaner
Scans and clears browser cookies, localStorage, sessionStorage, and cached data for the current site.
Speed Test
Measures your internet connection’s download speed and latency by downloading a test file from a CDN. Upload speed is not currently measured.
Wheel of Names
Displays an animated spinning wheel that randomly selects one entry from a customizable list of names or options.
QR Code Generator
Renders a scannable QR code from any text or URL using a client-side Reed-Solomon encoder. Download as PNG.
Random Number Generator
Generates cryptographically secure random integers or decimals within a user-defined min-max range with optional repetition filtering.
Resume Builder
Provides a structured, form-based interface for entering work history, education, and skills, then renders a professionally formatted PDF resume.