325 free browser tools, calculators, converters and developer utilities
About OnlineToolHubs
OnlineToolHubs is a free collection of 325 browser-based calculators, converters, PDF tools and developer utilities. 309 tools process inputs entirely on the user's device, so documents, code and calculations do not need to be uploaded. No account, download or usage limit is required; the remaining tools use public APIs only when live data is needed.
✓ VerifiedSep 30, 2026
🏷️ Get an embeddable badge for OnlineToolHubs
Show it off on your own site — updates automatically, links back here.
Reviews
No reviews yet — be the first to share your experience.
Similar tools
ToolsNow
111 privacy-first browser tools — no uploads, accounts or limits.
XFreeTool
650+ free browser-based tools for everyday work
ToolsCrest – Free Online Tools
100+ Free Online Tools for PDF, Images, SEO, Developers, Calculations & More
Toolkitta
Free browser tools for images, PDFs, audio, video, and text
Tooleem
Free privacy-first browser tools for everyday tasks
Zahluna
Kostenlose Online-Tools für deinen digitalen Alltag