Is this calculator free?

Yes! 100% free with no signup required.

What's the difference between KB and KiB?

KB (kilobyte) uses decimal (1000 bytes), KiB (kibibyte) uses binary (1024 bytes).

Why do my file sizes look different?

Operating systems use different calculation methods. We show both.

No, all calculations happen in your browser.

Free File Size Calculator

Convert file sizes between bytes, KB, MB, GB, and TB instantly. Perfect for storage planning.

Value

Unit

Base

104,857,600

Bytes

102,400

KiB (Kibibytes)

100.0

MiB (Mebibytes)

0.0977

GiB (Gibibytes)

9.54e-5

TiB (Tebibytes)

Transfer Time Estimate

Connection Speed

17 seconds

at 50 Mbps

✓ 100% Free✓ No signup required✓ All calculations in your browser

How It Works

Enter Size

Input the file size you want to convert.

Select Unit

Choose the unit (KB, MB, GB, TB).

See Results

Instantly see conversions to all units.

Calculator Features

All units

Convert between B, KB, MB, GB, and TB.

Instant conversion

Results update as you type.

Binary & decimal

Support for both calculation methods.

Storage planning

Calculate storage needs easily.

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