Free Online Data Size Converter

Data sizes use two bases: decimal SI (1 KB = 1000 B) and binary IEC (1 KiB = 1024 B). Toggle which one you want.

Your data is processed entirely in your browser and never sent to any server.

Instant results 100% private No signup needed
Result
0.000977 GB

How to Use This Converter

  1. Toggle the base between Decimal (1000) and Binary (1024).
  2. Type a value into any unit field.
  3. Every other unit field updates simultaneously.

What Is a Data Size Converter?

Two competing conventions live side by side. The SI / decimal version uses powers of 10: 1 KB = 1000 bytes, 1 MB = 1,000,000 bytes. The IEC / binary version uses powers of 2: 1 KiB = 1024 bytes, 1 MiB = 1,048,576 bytes. Disk manufacturers and network gear use decimal; Windows, Linux and macOS file managers usually report binary. The same drive reads as 500 GB on the box and 465 GiB in your file manager.

Developers sizing uploads against API limits, sysadmins reconciling marketing specs with df output and students comparing RAM specs all need the conversion to land in the right base. Toggle between the two and watch every unit refresh.

Numbers are kept exact internally and rounded only on display, so large multi-petabyte values stay accurate to the byte.

Frequently Asked Questions

How many MB in a GB?
1 GB = 1024 MB (binary) or 1000 MB (decimal). We support both standards.
What's the difference between KB and KiB?
KB = 1000 bytes (decimal). KiB = 1024 bytes (binary). Storage often uses binary.
How big is a TB?
1 TB = 1024 GB ≈ 1 trillion bytes. Common for hard drives and cloud storage.

Published by the WeGotEveryTool team. We build and test every tool in-house and update pages when the underlying spec, formula, or recommendation changes.

Reviewed: May 2026. Disclaimer: this tool is provided as-is for general informational use. For decisions with material consequences (medical, legal, financial, security) verify results against a qualified professional source.

Related Unit Converters

Length Converter

Convert between length units: meters, feet, inches, miles, kilometers, and more. Fast and accurate.

Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin. Perfect for cooking, weather, and science.

Weight Converter

Convert between weight and mass units: kg, lbs, oz, grams, stones. Essential for cooking and fitness.