Terabytes to Megabytes

Convert TB to MB instantly — decimal (SI), with a table, common file sizes, and a live calculator.

1 TB equals 1000000 MB.

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Result (MB)1000000 MB

TB to MB table

TBMB
1 TB1000000 MB
2 TB2000000 MB
3 TB3000000 MB
5 TB5000000 MB
10 TB10000000 MB
15 TB15000000 MB
20 TB20000000 MB
25 TB25000000 MB
30 TB30000000 MB
40 TB40000000 MB
50 TB50000000 MB
60 TB60000000 MB
75 TB75000000 MB
90 TB90000000 MB
100 TB100000000 MB
120 TB120000000 MB
150 TB150000000 MB
200 TB200000000 MB
250 TB250000000 MB
300 TB300000000 MB
400 TB400000000 MB
500 TB500000000 MB

MB to TB (reverse)

MBTB
1 MB0.000001 TB
2 MB0.000002 TB
3 MB0.000003 TB
5 MB0.000005 TB
10 MB0.00001 TB
15 MB0.000015 TB
20 MB0.00002 TB
25 MB0.000025 TB
30 MB0.00003 TB
40 MB0.00004 TB
50 MB0.00005 TB
60 MB0.00006 TB
75 MB0.000075 TB
90 MB0.00009 TB
100 MB0.0001 TB
120 MB0.00012 TB
150 MB0.00015 TB
200 MB0.0002 TB
250 MB0.00025 TB
300 MB0.0003 TB
400 MB0.0004 TB
500 MB0.0005 TB

Common file sizes

TBMB
5 TB5000000 MB
10 TB10000000 MB
25 TB25000000 MB
50 TB50000000 MB
75 TB75000000 MB
100 TB100000000 MB
120 TB120000000 MB
150 TB150000000 MB
200 TB200000000 MB
300 TB300000000 MB
400 TB400000000 MB
500 TB500000000 MB

How it scales

2500000050000000750000001000000000255075100TB

1 GB in other units

1000MB1000000KB1000000000bytes

The ratio at a glance

1 TB1000000 MB

Decimal vs. binary — why 1 GB isn't always 1 GB

This page uses the decimal (SI) convention: 1 KB = 1000 bytes, 1 MB = 1000 KB, 1 GB = 1000 MB, and 1 TB = 1000 GB. That is how hard-drive and SSD makers, Google, and macOS state capacity. Windows and RAM, by contrast, use the binary (IEC) convention, where 1 KiB = 1024 bytes and 1 GiB = 1024 MiB. The gap grows with size: 1 GiB = 1.073741824 GB, which is why a 1 TB drive (1000 GB) shows as about 931 GiB in Windows. No storage is missing — these are simply two different measuring systems.

Data-storage conversions are exact and rest on fixed factors — for more unit pairs, use our data storage conversion hub.

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Frequently asked questions

How many MB are in 1 TB?

1 TB equals 1000000 MB.

How many MB are in 2 TB?

2 TB equal 2000000 MB.

How do I convert TB to MB?

Multiply the amount in TB by 1000000 to get MB.

Is 1 GB equal to 1000 MB or 1024 MB?

On this page we use the decimal (SI) convention: 1 GB = 1000 MB, 1 MB = 1000 KB, and so on. That is what storage manufacturers, Google, and macOS use. The binary (IEC) convention (1 GiB = 1024 MiB), used by Windows and RAM, gives different numbers: 1 GiB = 1.073741824 GB.

Why does my computer show less space?

Hard-drive and SSD makers state capacity in decimal units (1 TB = 1000 GB = 1,000,000,000,000 bytes). Windows, however, counts in binary and reports the same capacity as GiB (dividing by 1024 instead of 1000). So a 1 TB drive shows as about 931 GiB in Windows — no space is missing, it is just a different unit (1 GiB = 1.073741824 GB). macOS has shown decimal GB since OS X 10.6.

What are these data-storage units used for?

Bytes and bits are the smallest units — 1 byte = 8 bits; bits per second measure bandwidth. Kilobytes (KB) and megabytes (MB) describe documents, photos, and songs; gigabytes (GB) and terabytes (TB) describe hard drives, SSDs, and data plans. All values here are decimal (SI).

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