100 Free Online Tools
Calculators, converters, PDF utilities, and developer tools whose primary processing happens in your browser. NVR Nexus also builds a standalone web product and publishes technology content.
Featured Tools
Hand-picked tools for everyday tasks, learning, work, and creativity. No account is required, and primary processing happens in your browser.
Convert epoch seconds through nanoseconds to UTC, local, ISO, and HTTP dates with exact unit conversion and timestamp differences.
Change audio speed from 0.25x to 4x, preserve pitch, apply natural resampling, or shift pitch by semitones. Preview and export privately.
Calculate adult BMI with metric or imperial units and view BMI Prime, category, and a healthy-weight screening range.
Estimate adult body fat percentage from height and tape measurements with metric or imperial units and optional fat-mass results.
Calculate years, completed months, weeks, total days, weekdays, weekends, hours, minutes, and seconds between two calendar dates.
Resize images by pixels or percentage, choose Fit or Crop, export JPEG, PNG or WebP, and download batches locally.
Product
Your Relationship Playground
Match with FLAMES, Zodiac Sync, and Destiny Numbers. Explore Relationship Tools and Bond Studio. Share quotes, greeting cards, social posts, photo collages, and Daily Bond — free, no signup.
Series
Curated technology stories and historical comparisons.
Technology Evolution
Explore how technology transformed everyday life through the decades.
Founders & Inventors
Short profiles of the founders and inventors behind the products and ideas that reshaped technology.
Blog
Insights on AI, software development, and the future of technology.
Artificial intelligence is changing how newsrooms research stories, analyze evidence, create formats, reach audiences, and verify digital media. The opportunity is significant—but so are the risks to accuracy, transparency, trust, and editorial independence.
Wearable technology is evolving beyond smartwatches into intelligent clothing, health sensors, augmented-reality glasses, and body-integrated devices. Discover how wearables could transform health, work, communication, and everyday life.
Artificial Intelligence is transforming the legal industry through contract analysis, legal research, document automation, compliance monitoring, and predictive case insights. Discover how AI is reshaping the future of legal services.
Knowledge Hub
Clear explanations of how everyday and emerging technologies work.
Learn how the Domain Name System turns domain names into IP addresses, how a DNS lookup moves through resolvers and authoritative servers, and how records, caching, TTL, DNSSEC, and encrypted DNS work.
Learn how search engines discover, crawl, render, index, retrieve, rank, and present webpages—and how SEO, AI answers, and privacy fit into the process.
Follow a URL through parsing, DNS, TCP or QUIC, TLS, HTTP, server processing, caching and browser rendering until a webpage becomes interactive.
FAQ
Common questions about NVR Nexus products, tools, and content.