What is the difference between MB and MiB?

1 MB = 1,000,000 bytes (SI decimal). 1 MiB = 1,048,576 bytes (IEC binary, 1024²). Storage vendors use MB; RAM and operating systems often use MiB.

Why does my 1 TB drive show as ~931 GB in my OS?

Vendors mark capacity in TB (decimal): 1 TB = 10¹² bytes. Most OSes report in GiB (binary): 10¹² / 1024³ ≈ 931 GiB. Both are correct — different units.

Is a bit always 1/8 of a byte?

Yes in practice. We use the standard 8-bit byte for all conversions.

Is my input uploaded?

No — every byte stays in your browser.

Home
Unit Converters
Data Storage Converter

Unit Converters

Data Storage Converter

Convert bits, bytes, KB/MB/GB/TB (SI) and KiB/MiB/GiB/TiB (IEC). Spot the difference between decimal and binary scales.

Data storage converter

Base unit: B · 12 units

From

MB — MegabyteSI

95.367432

MiB — MebibyteIEC

All units

800,000,000
100,000,000
100,000
100
0.1
1.0000e-4
1.0000e-7
97,656.25
95.367432
0.09313226
9.0949e-5
8.8818e-8

Unit Converters

Energy Converter

Convert joules, kilojoules, calories, kilocalories, watt-hours, BTU, foot-pounds and electronvolts.

Unit Converters

Speed Converter

Convert m/s, km/h, mph, knots, ft/s, mach, and the speed of light. Live, browser-only, free.

Unit Converters

Length Converter

Convert between meters, feet, inches, kilometers, miles, yards, nautical miles and more — instantly, in your browser.

Unit Converters

Weight Converter

Convert kilograms, pounds, ounces, stones, tonnes, troy ounces and more. Live, accurate, in your browser.

Unit Converters

Temperature Converter

Convert Celsius, Fahrenheit, Kelvin, Rankine, Réaumur. Handles negative temperatures and below-absolute-zero edge cases gracefully.

Unit Converters

Volume Converter

Convert liters, milliliters, US/UK gallons, cups, tablespoons, fluid ounces, cubic meters and more — live in your browser.

About Data Storage Converter

A precision data-storage converter that distinguishes SI decimal prefixes (KB = 1000 B) from IEC binary prefixes (KiB = 1024 B). Essential for accurate disk, RAM, and network reporting.

How to use

Enter a value (e.g. 100 MB).
Pick the source unit.
Pick the target unit, or compare across the grid.
Spot the SI vs IEC difference instantly.

FAQ

Frequently asked questions

Got questions? We’ve got answers. Here are some of the most common inquiries about Data Storage Converter.

Data storage converter

Base unit: B · 12 units

From

MB — MegabyteSI

95.367432

MiB — MebibyteIEC

All units

800,000,000
100,000,000
100,000
100
0.1
1.0000e-4
1.0000e-7
97,656.25
95.367432
0.09313226
9.0949e-5
8.8818e-8

Related tools

About Data Storage Converter

How to use

Frequently asked questions

What is the difference between MB and MiB?

Why does my 1 TB drive show as ~931 GB in my OS?

Is a bit always 1/8 of a byte?

Is my input uploaded?

Related tools

About Data Storage Converter

How to use

Frequently asked questions

What is the difference between MB and MiB?

Why does my 1 TB drive show as ~931 GB in my OS?

Is a bit always 1/8 of a byte?

Is my input uploaded?