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Convert TB to GB

A practical reference for converting terabytes (TB) to gigabytes (GB), a data unit. Type any value for an instant result, or use the reference table below.

1 TB = 1,024 GB
GB = TB × 1024
1,024 GB

Conversion formula

GB = TB × 1024

This page uses the binary convention where 1 TB = 1024 GB, which is why drive capacity appears smaller than advertised.

Quick reference table

terabytesgigabytes
0.5 TB512 GB
1 TB1,024 GB
2 TB2,048 GB
4 TB4,096 GB
5 TB5,120 GB
8 TB8,192 GB
10 TB10,240 GB
12 TB12,288 GB
16 TB16,384 GB
20 TB20,480 GB

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Frequently asked questions

How many GB is 1 TB?

1 TB equals 1,024 GB.

Why does my result differ slightly from other sites?

Rounding. This page displays four decimal places while the underlying calculation keeps full precision.

Is my input sent to a server?

No. Every calculation runs locally in your browser and nothing is transmitted.

All calculations on this page run in your browser. Your input is never sent to a server.

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