6 widgets · free · no ads

Free Networking & IT Calculator Widgets

IP range to CIDR, download time, data storage and data rate converters, uptime SLA and RAID capacity widgets - all computed in the browser.

Who these are for

Network engineers, hosting providers, IT teams, MSPs and computing students.

Common uses

  • An IP-range-to-CIDR converter in firewall documentation
  • A download-time and bandwidth estimate on an ISP or hosting page
  • An uptime SLA table on a status or contract page

How embedding works

Pick a widget, set the theme and size, copy one line of HTML and paste it into your page. It runs in its own frame, so it cannot clash with your site's styles, and it resizes itself if you use the loader.

  • IP Range to CIDR Converter

    Networking & IT Converter New

    Turn any IPv4 start-end range into the minimal list of CIDR blocks that covers exactly it.

    Get code

  • Download Time Calculator

    Networking & IT Calculator New

    How long a file takes at a given connection speed - or the speed a deadline needs.

    Get code

  • Data Storage Converter

    Networking & IT Converter New

    Bits, bytes, kB to PB and KiB to PiB in one table - and why a 1 TB drive shows 931 GiB.

    Get code

  • Data Rate Converter

    Networking & IT Converter New

    Convert Mbps, Gbps and kbps to MB/s, MiB/s and back, with every rate unit side by side.

    Get code

  • Uptime SLA Calculator

    Networking & IT Calculator New

    Allowed downtime per day, week, month, quarter and year for any availability %, and the reverse.

    Get code

  • RAID Calculator

    Networking & IT Calculator New

    Usable capacity, efficiency and failures survived for RAID 0, 1, 5, 6, 10, 50 and 60 arrays.

    Get code

Other widget categories

How to add a widget

Open a widget, choose the theme, width and style, check the live preview, then copy the code. Paste it into an HTML or "Custom code" block on your site - step-by-step instructions for each platform.

Preview

CustomizeGet code