Base64 to Binary Byte-Size
Calculate the original binary file size from a Base64 encoded string length.
When receiving data as Base64 (e.g., from an API), it's often necessary to know the size of the original binary file for storage or processing limits. This tool reverses the Base64 overhead calculation, providing the actual byte count of the decoded asset.
This is particularly useful for validating file upload limits on the backend when the data is sent via JSON. By calculating the binary size before decoding, developers can reject oversized payloads early in the request lifecycle, saving memory and CPU cycles.
Privacy: Size calculations are performed locally. No string data is uploaded to our servers.
Terms: Calculation is an estimate. Actual size may be slightly smaller due to padding characters (=) at the end of the string.
Terms: Calculation is an estimate. Actual size may be slightly smaller due to padding characters (=) at the end of the string.
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