Data Size Converter (B to TB)

About Data Size Converter

Digital storage and transfer sizes are quoted in bytes and larger steps, but marketing sometimes mixes decimal (SI) and binary (IEC) conventions. CalculatorCamp data size converter helps translate between common labels you see on drives and download meters.

Knowing whether a vendor means 1 GB as 1,000,000,000 bytes or 1,073,741,824 bytes explains why formatted capacity looks smaller than the box label.

Use consistent units when estimating backup needs or comparing cloud plan limits.

How to use this tool

Enter the data amount, select whether your source is bytes, KB, MB, GB, or TB as defined in the form, and pick the output unit. Calculate to view the result.

Formula & methodology

This data size converter (b to tb) applies the standard relationship below. Intermediate values are kept at full precision; only the displayed result is rounded.

1 KB = 1024 B (binary IEC) or 1000 B (decimal SI)—follow tool/form convention

Tips for accurate results

• Check if your OS shows GiB vs GB in disk utility.
• Network speeds use bits per second; file sizes use bytes—convert bits separately.
• Add overhead for filesystem metadata when planning partitions.
• Cloud egress fees use provider-specific rounding—verify billing docs.

Frequently asked questions

Sources & references

The factors and formulas used by this tool follow these references:

• NIST — Prefixes for binary multiples (kibi, mebi, gibi)
• NIST Special Publication 811 — Guide for the Use of the International System of Units (SI)
• BIPM — The International System of Units (SI Brochure, 9th edition)

Last reviewed: September 2026. Found an error? Tell us and we will correct it.