Data Calculators

Storage, bandwidth and transfer-time calculations.

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Download Time CalculatorEnter the size of a file and your connection speed to see how long the transfer should take and when it will finish. Choose bits or bytes per second, and decimal or binary units.
RAID CalculatorPick a RAID level, the size and price of one drive, the drives per group and the number of groups. The calculator returns usable storage, cost per unit, efficiency and a rough speed gain.

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Reeliy's calculators, converters, randomizers and articles are provided free of charge, as they are, for general information. We check our tools carefully, but mistakes can happen, so please read the Disclaimer and Terms of Use before relying on a result.