Free Technology Utilities & Diagnostics
Browser-based, lightweight, and 100% private. Test internet latency, audit password entropy, and calculate media aspect ratios without installing third-party software.
Text Case Converter
Transform text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, and snake_case.
Word Counter & Analyzer
Calculate live words, characters, sentences, paragraphs, reading time, and keyword density.
Character Counter & SMS Segments
Exact character counts by letter, digit, space, symbol, and GSM-7 vs Unicode SMS billing segments.
Line Counter & List Organizer
Count total, empty, and non-empty lines with automatic duplicate removal, sorting, and numbering.
HEX ↔ RGB Color Code Converter
Convert colors between HEX, RGB, RGBA, HSL, and HSLA with real-time swatch preview, alpha slider, and WCAG contrast score.
Timestamp & Timezone Converter
Convert dates into ISO 8601, RFC 2822, and major world timezones (UTC, EST, PST, GMT, IST, JST) with relative time offsets.
Unix Timestamp Converter
Live ticking Unix epoch clock. Convert epoch seconds and milliseconds to human dates and vice versa with multi-language code.
Download Time Calculator
Accurately estimate how long it will take to download any file, 4K movie, or 100 GB game based on your connection speed.
Upload Time Calculator
Estimate upload durations for YouTube videos, Google Drive archives, and iCloud backups on asymmetric cable or fiber.
Data Usage & Bandwidth Calculator
Calculate monthly gigabyte consumption across 4K streaming, Zoom calls, gaming, and mobile apps to prevent data overages.
Network Ping, Jitter & Latency Test
Measure physical round-trip delay to nearby CDN edge clusters, packet variance, and streaming suitability.
Password Strength & Entropy Analyzer
Client-side cryptographic Shannon entropy evaluator. Estimate GPU brute-force crack time with 100% privacy.
Image Aspect Ratio & DPI Calculator
Calculate proportional pixel dimensions, physical photo print sizing at 300 DPI, and WebP compression savings.