Data Size Converter
Convert between KB/MB/GB and KiB/MiB/GiB.
Reach for Data Size Converter when you're debugging data transport, building a test fixture or just learning how text is encoded. It converts both ways, is fully UTF-8 safe, and runs free and private in your browser.
About Data Size Converter
Data Size Converter convert between KB/MB/GB and KiB/MiB/GiB instantly, in both directions, right in your browser. It's the quick, UTF-8-safe utility developers reach for when debugging data transport, building test fixtures or learning how text is represented under the hood. Like every ToolJolt utility it runs 100% in your browser — no sign-up, no upload, and nothing ever sent to a server, so it's safe for proprietary code and confidential data.
How to use Data Size Converter
- 1Paste or type your input.
- 2Pick the direction (encode or decode) if applicable.
- 3The converted value appears instantly.
- 4Copy it wherever you need it.
Why use Data Size Converter?
- ✓Converts both directions instantly
- ✓Fully UTF-8 aware — emoji and accents round-trip
- ✓Copy the result with one click
- ✓Handy for debugging, transport and learning
Frequently asked questions
Does Data Size Converter handle Unicode correctly?+
Yes. Data Size Converter is UTF-8 aware, so multi-byte characters such as emoji, accents and non-Latin scripts encode and decode without corruption.
Is encoding the same as encryption?+
No. Encoding only changes how data is represented so it can travel safely through text systems — anyone can reverse it. It provides no secrecy; use an encryption tool when you need confidentiality.
Is Data Size Converter free?+
Yes. Data Size Converter is completely free with no sign-up, no account, no usage limits and no watermarks. Use it as often as you like.
Does Data Size Converter send my data to a server?+
No. Data Size Converter runs entirely in your browser with JavaScript — your input never leaves your device, which makes it safe for private API payloads, schemas and source code.
Embed Data Size Converter on your website
Want Data Size Converteron your own site? Paste this snippet into any HTML page — it's free, with no API key or sign-up. The tool loads in an iframe and keeps working exactly as it does here.
<iframe src="https://tooljolt.com/tools/data-size-converter" width="100%" height="640" style="border:1px solid #e5e7eb;border-radius:12px;max-width:680px" title="Data Size Converter — ToolJolt" loading="lazy"></iframe>