Resources

Free calculators for everyday network and IT questions.

Convert between kbit/s, Mbit/s and Gbit/s and kB/s, MB/s and GB/s. See one speed in every unit at once.

Estimate how long a download or upload will take from the file size and your connection speeds.

Get the network and broadcast address, usable host range and masks for any IPv4 network, or split it into smaller subnets.

Estimate how long a UPS will run your equipment on battery, or how big a battery you need for a target runtime.

Find how many days of camera video your drives will hold, or how much storage you need for the retention you want.

Add up the cameras, phones and access points on a switch and check them against its PoE budget and port standard.

Plan how much storage you need as your data grows per day, week or month, and see when you will outgrow your current storage.

Estimate the usable capacity and the read and write speed of a ZFS pool from its layout, drives and workload.

Find the usable capacity, fault tolerance and speed of a RAID 0, 1, 5, 6, 10, 50 or 60 array.

Find out how long a full or nightly backup takes over your connection and whether it fits your window.

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