Terabytes to Megabytes Converter

About the tb to mb calculation

One terabyte is exactly 1,000,000 megabytes, so converting between them is a single multiplication. Enter any value above and the result updates as you type. Decimal terabyte — 1,000,000,000,000 bytes. Decimal megabyte — 1,000,000 bytes, the definition storage manufacturers use.

Formula

MB = TB × 1,000,000

1 TB = 1,000,000 MB
1 MB = 0.000001 TB

Worked example

To convert 1 TB, multiply by 1,000,000: 1 × 1,000,000 = 1,000,000 MB.

Frequently asked questions

How many megabytes are in a terabyte?

There are 1,000,000 megabytes in one terabyte. To convert any amount, multiply the number of terabytes by 1,000,000.

How do I convert megabytes back to terabytes?

Divide instead of multiplying, or equivalently multiply by 0.000001. One megabyte is 0.000001 terabytes.

Is this conversion exact?

Yes, provided both sides use the same convention. Decimal units (KB, MB, GB) are powers of 1,000 and binary units (KiB, MiB, GiB) are powers of 1,024. Both are exact — the confusion comes from software labelling binary values with decimal names.

Where is each of these units used?

Terabytes: decimal terabyte — 1,000,000,000,000 bytes. Megabytes: decimal megabyte — 1,000,000 bytes, the definition storage manufacturers use.

Sources

• IEC 80000-13 — binary and decimal prefixes for information units