Convert Terabits to Gigabytes
Convert Terabits (Tbit) to Gigabytes (GB) instantly and accurately.
Conversion Formula
GB = Tbit × 125
About Terabits
A terabit (Tbit) = 10¹² bits (SI). Submarine cable capacity: 2Africa cable (2024) designed at 180 Tbit/s; MAREA (2017) at 160 Tbit/s. Data-centre interconnects use 400 Gbit/s (0.4 Tbit/s) per link. PCIe 6.0 ×16 delivers ≈0.5 Tbit/s aggregate. NVMe RAID arrays with 100+ PCIe 5.0 SSDs approach 1 Tbit/s aggregate sequential read. 1 Tbit = 10¹² bits = 125 GB.
About Gigabytes
A gigabyte (GB) = 10⁹ bytes (SI). All consumer HDDs, SSDs, SD cards, USB drives, and smartphones advertise in GB. Media sizes: 4K Blu-ray 66-100 GB; 4K Netflix film 10-15 GB; modern AAA PC game 50-200 GB; Google Maps offline country data 5-30 GB. The IBM 350 RAMAC (1956) stored 0.00000375 GB; a Seagate Exos 20 TB holds 20,000 GB - 5.3-million-fold increase in 66 years. 1 GB = 10⁹ bytes = 1,000 MB.
Quick Reference Table
| Terabits (Tbit) | Gigabytes (GB) |
|---|---|
| 1 Tbit | 125 GB |
| 2 Tbit | 250 GB |
| 5 Tbit | 625 GB |
| 10 Tbit | 1250 GB |
| 25 Tbit | 3125 GB |
| 50 Tbit | 6250 GB |
| 100 Tbit | 12500 GB |