In 1 megabytes there are 0.00000100000 terabytes. Meanwhile in 1 terabytes there are 1,000,000 megabytes. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Terabytes to Megabytes calculator above to convert any number.
* Values rounded to 6 decimal places for readability
To convert megabytes (MB) to terabytes (TB), divide the MB value by the right factor for the unit system you’re using.
Binary (base-2, most common in computing):
1 TB = 1,048,576 MB
TB = MB ÷ 1,048,576
Decimal (base-10, common for drive labels):
1 TB = 1,000,000 MB
TB = MB ÷ 1,000,000
Example (binary):
Small rounding differences can happen, so round to the precision you need.
In decimal units (base-10), 1 terabyte (TB) = 1,000,000 megabytes (MB). This is the standard used by most drive makers and many storage plans.
In binary units (base-2), 1 tebibyte (TiB) = 1,048,576 mebibytes (MiB). Some operating systems show storage closer to these base-2 values.
Not in decimal units. In decimal (base-10), 1 TB = 1000 GB.
The 1024 step comes from binary (base-2) math. In that system, 1 TiB = 1024 GiB. People often say “1 TB = 1024 GB,” but that mixes the two systems.
Storage can be shown in two systems:
Drives and plans often use decimal. Many computer displays use binary, even if they label it as “GB” or “TB.” That can make the same drive look smaller on screen.
MB and TB are decimal units. MiB and TiB are binary units.
These differences add up at large sizes, like terabytes.
For decimal conversion, divide megabytes by 1,000,000:
Example: 500,000 MB = 0.5 TB
For binary-style conversion, divide mebibytes by 1,048,576:
For decimal conversion, multiply terabytes by 1,000,000:
Example: 2 TB = 2,000,000 MB
For binary-style conversion, multiply tebibytes by 1,048,576:
Using decimal units (base-10):
If you’re working with binary units, the values will be higher in MiB per TiB.
In decimal units, they are the same:
If your device reports storage using binary units, the displayed “1 TB” may not match what you expect because the system may be showing TiB-like values.
Drive makers usually label using decimal units: 1 TB = 1,000,000,000,000 bytes.
Many computers display storage using binary math. When you convert those bytes into binary units, you get about:
Some systems still label that number as “TB” even though the math is closer to TiB. That’s why the drive looks smaller.
Yes. Data plans, downloads, and upload limits often use MB, GB, and TB in decimal units. That means:
Some apps may show binary values, so the numbers can differ depending on the device and settings.
Yes, but overhead can change the exact result. A drive holds files plus:
So the total usable space in TB may be a bit less than the label, and the number of MB you can store can be lower than simple math suggests.
A simple decimal shortcut works well for most storage and plan labels:
For exact results, stick to one system (decimal or binary) from start to finish.
The Calculate Box tool to convert megabytes to terabytes uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a megabytes value in the box and have it instantly converted to terabytes.