Data Storage Calculator & Unit Converter
Free tools for storage professionals. Convert GB to TB, Mbps to MB/s, and all data units. Calculate RAID capacity, IOPS, transfer time, storage cost per TB, and deduplication ratios.
Storage Calculators
RAID Calculator
Calculate usable capacity, overhead, and fault tolerance
Transfer Time Calculator
Estimate migration and backup durations
Storage Capacity Planner
Plan raw vs usable capacity
IOPS Calculator
Understand performance characteristics
Dedup & Compression Calculator
Calculate storage savings from data reduction
Storage Cost Calculator
Estimate cost per TB across storage tiers
About StorageMath
StorageMath provides free, accurate tools for data storage professionals, system administrators, and anyone working with storage infrastructure. Every calculator and converter on this site is built on precise mathematical standards — not approximations.
Storage unit conversion covers all 41 SI decimal units (KB, MB, GB, TB, PB, EB, ZB, YB) and IEC binary units (KiB, MiB, GiB, TiB, PiB, EiB, ZiB, YiB), including bit equivalents. The data transfer rate converter handles all 47 bandwidth units from bps to Ybps — essential for sizing network links and storage interfaces.
The RAID calculator computes usable capacity, parity overhead, and fault tolerance for RAID 0, 1, 5, 6, and 10. The transfer time calculator estimates migration and backup duration for any data size and link speed. The IOPS calculator models storage performance using latency, queue depth, and block size parameters. The storage capacity planner calculates true usable capacity after RAID, hot spares, and file system overhead.
New tools include the deduplication and compression ratio calculator for sizing all-flash arrays and backup targets, and the storage cost calculator for comparing NVMe, SSD, HDD, tape, and cloud pricing on a true cost-per-usable-TB basis.