RAID Calc2

Stop guessing your RAID capacity. RAID Calculator gives instant, accurate RAID size and redundancy estimates right on your iPhone.

Understand your RAID before you build it. RAID Calculator gives you quick, accurate estimates of usable capacity and redundancy for common RAID levels. Whether you’re planning a homelab, sizing storage for a small office, or just learning how RAID works, this simple calculator helps you reason about your arrays in seconds. Features • Supports common RAID levels (e.g., RAID 0, 1, 5, 6, 10)* • Enter disk size and disk count to see usable capacity • See how many drive failures your configuration can tolerate • Works completely offline – no accounts, no analytics, no ads • Clean, focused UI with instant results Privacy-friendly by design All calculations run locally on your device. RAID Calculator doesn’t collect personal data, use trackers, or send your RAID configurations anywhere. Who is it for? • Homelab and NAS enthusiasts • IT admins and sysadmins • Students learning about storage and redundancy • Anyone who wants a quick RAID sanity check Plan your arrays with more confidence and less guesswork.