Terabytes to Megabytes
Type a value in either box to convert between terabytes and megabytes. The factor is 1e+06.
| Terabytes | Megabytes |
|---|---|
| 1 TB | 1000000 MB |
| 2 TB | 2000000 MB |
| 3 TB | 3000000 MB |
| 5 TB | 5000000 MB |
| 10 TB | 10000000 MB |
| 25 TB | 25000000 MB |
| 50 TB | 50000000 MB |
| 100 TB | 100000000 MB |
How to use
- Enter a value in the Terabytes field.
- The Megabytes figure appears immediately — no button to press.
- Typing in the Megabytes field converts back to Terabytes the same way.
- Use the reference table for the values that come up most often.
Terabytes to Megabytes formula
To convert terabytes to megabytes, multiply by 1000000.
MB = TB × 1000000
Why this factor: the terabyte and the megabyte are both defined against the byte, so dividing one definition by the other gives 1000000 directly. Both definitions are set out in full below.
To go the other way, divide by 1000000 — or use the Megabytes to Terabytes converter, which is the same calculation reversed.
Worked example
Given 64 TB, multiplying by 1000000 yields 64000000 MB.
64 TB × 1000000 = 64000000 MB
The converter above does this for any value you type, in either direction.
What is a terabyte?
A terabyte is one trillion bytes, the standard capacity unit for hard drives and large archives.
Definition: Exactly 1×10¹² bytes under SI prefixes. The binary tebibyte (TiB) is about 1.1×10¹² bytes.
Where it is used: Hard drive and SSD capacity, backup archives, and database sizes.
Worth knowing: A 1 TB drive reports as roughly 931 GiB in an operating system that counts in powers of two — the storage is not missing, just labelled differently.
What is a megabyte?
A megabyte is one million bytes, the familiar unit for photos, songs and app sizes.
Definition: Exactly 1,000,000 bytes under SI prefixes. The binary mebibyte (MiB) is 1,048,576 bytes.
Where it is used: Photo and audio file sizes, app downloads, and mobile data allowances.
Terabytes vs Megabytes
The terabyte and the megabyte belong to the same family of units, so converting between them is usually a matter of shifting a decimal point or applying a small whole-number factor.
Frequently asked questions
How many megabytes are in a terabyte?
One terabyte equals 1000000 megabytes.
What is the formula to convert terabytes to megabytes?
Multiply the number of terabytes by 1000000. To reverse it, divide by 1000000 instead.
How do I convert megabytes back to terabytes?
Divide by 1000000, which is the same as multiplying by 1e-06.
How many megabytes are in 10 terabytes?
10 TB works out to 10000000 MB.
Is there anything to watch out for with terabytes?
A 1 TB drive reports as roughly 931 GiB in an operating system that counts in powers of two — the storage is not missing, just labelled differently.
How is the terabyte defined?
Exactly 1×10¹² bytes under SI prefixes. The binary tebibyte (TiB) is about 1.1×10¹² bytes.