Base64 Encode
Encode text to standard Base64.
How to use Base64 Encode
Base64 Encode — Alternate URL for the same tool. Encode text to standard Base64 (RFC 4648), including = padding. Free to use in D2i DevTools — no account required.
Steps
- Fill in Input. This field is required.
- Click Run and copy the result under the form.
Frequently asked questions
What is Base64 Encode used for?
Use it for data URLs, basic auth credentials, or any API that asks for standard Base64 rather than URL-safe Base64.
How do I use the free online Base64 Encode tool?
Fill in Input. This field is required. Click Run and copy the result under the form.
What can I paste or upload into Base64 Encode?
Paste the text to encode. It is read as UTF-8 bytes, not as already-encoded Base64.
What output does Base64 Encode give me?
A Base64 string using A–Z, a–z, 0–9, +, and /, with = padding. For example, hello becomes aGVsbG8=.
Is Base64 Encode free, and is my input private?
Yes — Your input is processed in memory for this request only. It is not saved to disk or the database, and it is cleared after the tool finishes.
Why does my token use - and _ instead of + and /?
That is Base64url, not standard Base64. Use Base64 URL Encode for tokens, JWTs, and query strings.
Inputs are processed in memory only and are not saved to disk or the database. Data exists only for the duration of your request.