Base64 Converter

    Base64 Converter

    Encode or decode text with Base64

    URL-safe Base64Uses -_ instead of +/= and omits padding
    Result
    Enter text or upload a file to see the result here.

    What is Base64?

    Common Uses

    • Convert images/files to text
    • Email attachment encoding
    • API data transfer
    • Embed resources in web dev

    Features

    • Represent binary data as text
    • Uses A-Z, a-z, 0-9, +, / characters
    • ~133% of original size
    • URL-safe variant uses -, _ and omits padding
    Related tools
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    Cake Toolbox & this page

    Cake Toolbox is K-K’s free web utilities collection at k-k.page. Where possible, tools run in your browser to reduce unnecessary data transfer; pages that call AI or external APIs explain what is sent. Calculator and converter outputs are for reference only—not legal, tax, financial, or medical advice.

    If something looks wrong, email us with the page URL. Many sites offer similar widgets; we aim to add clear context, limitations, and safe-use notes—not just the bare UI.

    Is my input stored on your servers?

    It varies by tool—read the notice on this page. Many converters and generators run fully client-side.

    Can I use this commercially?

    You may use it for personal or work reference. Uses that harm site operation (e.g. resale, abusive automation) may be restricted under our Terms.

    Where do I report bugs?

    Use /contact or ilinyion@gmail.com with the page URL and steps to reproduce.

    What is Cake Toolbox?

    It is the product name for K-K’s utilities hub. See /tools/why-cake-toolbox for how we think about editorial quality and trust.

    Does it work on mobile?

    Yes, layouts are responsive. For heavy text or code tools, a larger screen may be more comfortable.