Data Storage Converter for Bytes, KB, MB, GB and TB
This data storage converter turns any value into every other storage unit at once, from a single bit up to a yottabyte. Type a number, pick the source unit, and read the equivalent in bytes, KB, MB, GB, TB and their binary cousins instantly.
Digital storage uses two measurement systems that often disagree: decimal (SI) counts in powers of 1,000, while binary (IEC) counts in powers of 1,024. Supporting both is exactly why a "1 TB" drive shows up as roughly 931 GiB in your operating system — and this tool makes that gap easy to see.
It is built for IT staff sizing servers and backups, developers handling uploads and storage APIs, content creators estimating media space, and students learning how data is measured.
How to Use the Data Storage Converter
Enter a value and source unit
Type a number into the From field and choose its unit from the dropdown — for example 1 GB. You can search the unit list by name or symbol to jump straight to the one you need.
Read every conversion at once
The results panel updates as you type, showing the equivalent value in every enabled unit, grouped into Bits, Decimal (SI), Binary (IEC) and Other.
Swap or fine-tune the pair
Use the converter card for a focused From / To pair, hit the Swap button to flip the units, and type into either side to convert in both directions.
Customize units and precision
Open Customize Units to show or hide whole groups, and set Decimals to 2, 4, 6, 8 or Auto. Your selections are remembered for next time.
Copy what you need
Click the copy icon on any row to grab a single value, or use Copy All Results to copy every visible conversion at once, ready to paste anywhere.
Features
Comprehensive Unit Support
Convert across 23 units in four groups: Bits (b to Tb), Decimal SI (B, KB, MB, GB, TB, PB, EB, ZB, YB), Binary IEC (KiB to YiB), plus the nibble.
Real-Time Conversion
Results recalculate the moment you type — no convert button — so you can experiment with values and compare units instantly.
Dual Input Mode
Use the From / To card for one quick pair, or read the full results panel that shows conversions to every unit at once.
Smart Number Formatting
Large numbers get space separators for readability, very large or tiny values switch to scientific notation, and precision is adjustable from 2 to 8 decimals or Auto.
Customizable Display
Show or hide unit groups to focus on decimal-only or binary-only results, and your preferences are saved for your next visit.
Quick Copy Functions
Copy any single result from its row, or grab everything with Copy All Results — values copy as plain numbers, ready to paste.
Unit Reference Guide
A built-in reference panel lists each unit's symbol, conversion factor and a typical real-world use, so the numbers always have context.
Mobile Friendly
A responsive layout with touch-friendly inputs adapts to any screen, and the converter keeps working offline after the first load.
Frequently Asked Questions
How many MB are in a GB — 1,000 or 1,024?
It depends on the system. In decimal (SI) units, 1 GB = 1,000 MB. In binary (IEC) units, 1 GiB = 1,024 MiB. Storage marketing and drive labels use decimal, while operating systems usually display binary, which is why both answers turn up. Select the matching unit group in this converter to get the figure you actually need.
What is the difference between KB and KiB (decimal vs binary)?
KB (kilobyte) is decimal: 1 KB = 1,000 bytes, the standard used by manufacturers and marketing. KiB (kibibyte) is binary: 1 KiB = 1,024 bytes, what operating systems use internally. The same "i" pattern applies to MB/MiB, GB/GiB and TB/TiB — the "i" always signals base-1024 measurement.
Which is bigger — KB, MB, GB or TB?
From smallest to largest the order is byte, KB, MB, GB, TB, PB, EB, ZB and YB, with each step 1,000 times the one before in the decimal system. So a TB is bigger than a GB, a GB is bigger than an MB, and an MB is bigger than a KB. The converter shows all of these side by side so the scale is easy to compare.
Why does my hard drive show less space than advertised?
It is the decimal-versus-binary gap. A "1 TB" drive is sold as 1,000,000,000,000 bytes (decimal), but Windows reports storage in binary units, so the same drive shows about 931 GiB. No space is missing — it is simply measured differently. Convert between TB and TiB here to see the exact relationship.
How do I convert bytes to GB or MB?
Enter the number of bytes, select Byte (B) as the source unit, and read the GB and MB rows in the results. For decimal units, 1 MB = 1,000,000 bytes and 1 GB = 1,000,000,000 bytes; for binary, 1 MiB = 1,048,576 bytes and 1 GiB = 1,073,741,824 bytes. The tool does the division for you in both systems at once.
How do bits relate to bytes for internet speed?
Internet speeds are quoted in bits per second (Mbps) while file sizes are in bytes, and 1 byte = 8 bits. To estimate a download time, convert the file size to bits and divide by your speed in bits per second. For example, a 100 MB file equals 800 Mb, so on a 100 Mbps line it takes about 8 seconds.
What is a nibble?
A nibble (also spelled "nybble") is 4 bits, or half a byte. It is handy in computing because one nibble maps to a single hexadecimal digit (0 to F), so two nibbles make one byte. You will find it in the Other group of this converter.
Is my data private, and can I use this offline?
Yes to both. Every conversion is computed locally in your browser — nothing you type is sent to a server. Once the page has loaded you can disconnect from the internet and keep converting, and your unit and precision preferences are saved on your own device.
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