How to convert terabytes to megabytes
To convert terabytes (TB) to megabytes (MB), divide the value in terabytes by 0.000001.
MB = TB ÷ 0.000001 (decimal)
MB = TB × 1,048,576 (binary)
Example: 5 TB = 5,000,000 MB, or 5,242,880 MB in binary.
Decimal (SI) counting steps by 1,000 and is what drive makers, macOS and phones use. Binary counting steps by 1,024 and is what Windows and RAM use; its unambiguous IEC names are KiB, MiB and GiB. Bits are decimal either way.
You can also type 5 TB to MB into the smart calculator, or mix units: 1 TB + 1 MB.
Terabytes to Megabytes conversion table
| Terabytes | Megabytes (decimal) | Megabytes (binary) |
|---|---|---|
| 0.01 TB | 10,000 MB | 10,485.76 MB |
| 0.1 TB | 100,000 MB | 104,857.6 MB |
| 0.25 TB | 250,000 MB | 262,144 MB |
| 0.5 TB | 500,000 MB | 524,288 MB |
| 1 TB | 1,000,000 MB | 1,048,576 MB |
| 2 TB | 2,000,000 MB | 2,097,152 MB |
| 3 TB | 3,000,000 MB | 3,145,728 MB |
| 4 TB | 4,000,000 MB | 4,194,304 MB |
| 5 TB | 5,000,000 MB | 5,242,880 MB |
| 6 TB | 6,000,000 MB | 6,291,456 MB |
| 7 TB | 7,000,000 MB | 7,340,032 MB |
| 8 TB | 8,000,000 MB | 8,388,608 MB |
| 9 TB | 9,000,000 MB | 9,437,184 MB |
| 10 TB | 10,000,000 MB | 10,485,760 MB |
| 12 TB | 12,000,000 MB | 12,582,912 MB |
| 15 TB | 15,000,000 MB | 15,728,640 MB |
| 20 TB | 20,000,000 MB | 20,971,520 MB |
| 25 TB | 25,000,000 MB | 26,214,400 MB |
| 30 TB | 30,000,000 MB | 31,457,280 MB |
| 40 TB | 40,000,000 MB | 41,943,040 MB |
| 50 TB | 50,000,000 MB | 52,428,800 MB |
| 60 TB | 60,000,000 MB | 62,914,560 MB |
| 75 TB | 75,000,000 MB | 78,643,200 MB |
| 100 TB | 100,000,000 MB | 104,857,600 MB |
| 250 TB | 250,000,000 MB | 262,144,000 MB |
| 500 TB | 500,000,000 MB | 524,288,000 MB |
| 1,000 TB | 1,000,000,000 MB | 1,048,576,000 MB |
Converting megabytes back to terabytes
1 MB = 0.000001 TB. See the Megabytes to Terabytes converter, or press the swap button above.
About the units
Terabyte (TB)
In decimal mode 1,000 GB, which is how drives are sold; in binary mode 1,024 GB.
Megabyte (MB)
In decimal mode 1,000,000 bytes (1,000 KB); in binary mode 1,048,576 bytes (1,024 KB).
Digital storage is counted in bits and bytes (1 byte = 8 bits). There are two ways to count bytes. Decimal (SI) prefixes step by 1,000: 1 KB = 1,000 B and 1 GB = 1,000 MB, which is how drive makers, macOS, iOS and Android report sizes. Binary prefixes step by 1,024: 1 KB = 1,024 B and 1 GB = 1,024 MB, which is how Windows and RAM count (the IEC names for these are KiB, MiB and GiB). Bits are always decimal: 1 Kb = 1,000 b.
Questions and answers
How many megabytes are in a terabyte?
One terabyte (TB) equals 1,000,000 megabytes in decimal (SI) counting, or 1,048,576 megabytes in binary counting (1 KB = 1,024 B), which Windows uses.
How do I convert terabytes to megabytes?
To convert terabytes to megabytes, divide the value in terabytes by 0.000001. The formula is MB = TB ÷ 0.000001. For example, 5 TB = 5,000,000 MB.
What is 5 TB in MB?
5 terabytes is 5,000,000 megabytes.
Which is bigger, a terabyte or a megabyte?
A terabyte is bigger: 1 TB = 1,000,000 MB.
Is 1 GB equal to 1,000 MB or 1,024 MB?
Both are in use. In decimal (SI) counting, which drive makers, macOS, iOS and Android use, 1 GB = 1,000 MB. In binary counting, which Windows and RAM use, 1 GB = 1,024 MB; the unambiguous IEC name for that size is the gibibyte (GiB). ConvertEasy has a Decimal / Binary switch so KB, MB, GB and TB follow whichever you need, while KiB, MiB and GiB are always binary.
Are kilobits 1,000 or 1,024 bits?
ConvertEasy treats bits as decimal in both modes: 1 Kb = 1,000 b, 1 Mb = 1,000 Kb. A byte is always 8 bits, so only byte units (KB, MB, GB…) change with the switch.
Does this TB to MB converter work offline?
Yes. ConvertEasy is a progressive web app: after your first visit it keeps working with no connection, and you can install it to your home screen from the browser menu.