03 calculators
Free NAS calculators
Work out usable RAID capacity, NAS electricity cost and SSD lifespan before you buy. Every calculator runs in your browser and shows the formula behind the result.
These calculators answer the questions people usually get wrong before buying a NAS: how much of the raw capacity on the drive labels you can actually use, what the box will add to your electricity bill, and whether an SSD will wear out early under cache or database writes. Each one runs in your browser, needs no account, and prints the formula it used so you can check the result.
Index
Calculators and related guides
- 01RAID Calculator: Usable Capacity for RAID 5, 6, 10, ZFS RAIDZ, SHR & UnraidFree RAID calculator: usable capacity, fault tolerance and wasted space for RAID 0/1/5/6/10, ZFS RAIDZ1–3, Synology SHR and Unraid, including mixed drive sizes.Jul 1, 2026 · 5 min
- 02NAS Power Consumption Calculator: How Much Does a NAS Cost to Run per Year?Calculate how much electricity your NAS uses and what it costs per month and per year, from idle watts, drive count, busy hours and your price per kWh.Jul 1, 2026 · 4 min
- 03SSD Endurance Calculator: TBW, DWPD and How Long a NAS SSD Will LastEstimate how many years an SSD lasts in a NAS from its TBW rating and your daily writes, convert TBW to DWPD, and compare NAS SSD endurance ratings.Jul 26, 2026 · 10 min