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What is a megabyte?

Photo and song file-size unit — 1,000,000 bytes (SI)

Definition

The megabyte equals 1,000,000 bytes (SI) or 1,048,576 bytes (binary, MiB). Used for photos, songs and medium-size documents. A standard MP3 song is 3–5 MB.

Common uses

  • Photo and image file sizes
  • MP3 and audio files
  • Small video clips

🌍 Real-world scale

MP3 song: 3–5 MB. High-res JPEG: 2–8 MB. PDF ebook: 5–50 MB.

Convert from megabytes

7 conversions
Megabyte to Bit1 MB = 8,000,000 bMegabyte to Byte1 MB = 1,000,000 BMegabyte to Kilobyte1 MB = 1,000 KBMegabyte to Gigabyte1 MB = 0.001 GBMegabyte to Terabyte1 MB = 1.0000e-6 TBMegabyte to Petabyte1 MB = 1.0000e-9 PBMegabyte to Megabit per Second1 MB = 8 Mbps

Convert to megabytes

7 conversions
Bit to Megabyte1 b = 1.2500e-7 MBByte to Megabyte1 B = 1.0000e-6 MBKilobyte to Megabyte1 KB = 0.001 MBGigabyte to Megabyte1 GB = 1,000 MBTerabyte to Megabyte1 TB = 1,000,000 MBPetabyte to Megabyte1 PB = 1,000,000,000 MBMegabit per Second to Megabyte1 Mbps = 0.125 MB

Tips

  • SI: 1 MB = 1000 KB = 1,000,000 B.
  • Binary MiB = 1,048,576 B — 4.86% larger.
  • HD drives, networks, SSDs: SI MB.

Common mistakes

  • Mixing MB and MiB without noting the difference (~5%).
  • Confusing MB (storage) with Mb (megabit, 1/8).
  • Assuming 1 GB = 1000 MB always — correct in SI; binary it's 1024.

FAQ about the megabyte

What is a megabyte?
The megabyte equals 1,000,000 bytes (SI) or 1,048,576 bytes (binary, MiB). Used for photos, songs and medium-size documents. A standard MP3 song is 3–5 MB.
Where is the megabyte used?
The megabyte is commonly used for: Photo and image file sizes; MP3 and audio files; Small video clips.
What is an example of a megabyte in real life?
MP3 song: 3–5 MB. High-res JPEG: 2–8 MB. PDF ebook: 5–50 MB.
What category does the megabyte belong to?
The megabyte is a unit of data, part of the 8-unit data category on UnitConv.
How accurate are megabyte conversions?
All conversion factors follow NIST and BIPM international standards to 8 significant figures — the highest practical accuracy.
Explore all 8 data units and their conversions.💾 Data hub →