Data Reference Sheet

Conversions

Decimal (SI) — bytes

  • 1 kB = 1,000 B
  • 1 MB = 1,000,000 B
  • 1 GB = 1,000,000,000 B
  • 1 TB = 10¹² B · 1 PB = 10¹⁵ B

Binary (IEC) — bytes

  • 1 KiB = 1,024 B
  • 1 MiB = 1,048,576 B
  • 1 GiB = 1,073,741,824 B
  • 1 TiB = 1,099,511,627,776 B · 1 PiB = 2⁵⁰ B

Bits → Bytes

  • 1 bit = 0.125 B (8 bits = 1 B)
  • 1 Mbit = 125,000 B
  • 100 Mbps = 12.5 MB/s

Bytes → Bits

  • 1 B = 8 bits
  • 1 GB ≈ 0.931 GiB (dec → bin)
  • 1 GiB ≈ 1.074 GB (bin → dec)

Quick benchmarks

  • Light web page: 500 kB–2 MB
  • Phone photo (12 MP): 2–5 MB
  • 1080p video ~5–10 Mbps (stream)
  • 4K video ~15–30 Mbps (stream)

Table: factors to bytes (B)

Unit Symbol Factor → B
Bits bit 0.125
Kilobits kbit 125
Megabits mbit 125,000
Gigabits gbit 125,000,000
Terabits tbit 125,000,000,000
Bytes B 1
Kilobytes kB 1,000
Megabytes MB 1,000,000
Gigabytes GB 1,000,000,000
Terabytes TB 1,000,000,000,000
Petabytes PB 1,000,000,000,000,000
Kibibytes KiB 1,024
Mebibytes MiB 1,048,576
Gibibytes GiB 1,073,741,824
Tebibytes TiB 1,099,511,627,776
Pebibytes PiB 1,125,899,906,842,624

This printable is a quick reference. For exact conversions (and copy-ready results), use the interactive converter.