Is this RAID Calculator free to use?

Yes, RAID Calculator is 100% free to use online with no installation or account required.

How do I use the RAID Calculator?

Simply enter your values into the required input fields and click calculate to view the results instantly.

Yes, the calculator is fully responsive and compatible with Android, iOS, Windows, macOS, and Linux web browsers.

RAID Calculator — Free Online Tool

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Calculate usable storage capacity and fault tolerance for RAID arrays

Instructions: Enter the number of drives, individual drive size, and select your RAID level below.

Array Configuration

Number of Drives

Drive Size (TB)

RAID Level

⚠️ For server planning, storage estimation, and reference purposes only.

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