Check File Size (Bytes, KB, MB, GB)

Inspect exact file byte sizes and human-readable units (KB, MB, GB) across single or batch files.

How It Works & Processing Standards

Inspect exact file byte sizes and human-readable units (KB, MB, GB) across single or batch files.

Your input data is never sent to any server and is securely processed on your device.

Current Limits

  • Desktop max file size: 100MB
  • Mobile max file size: 40MB

Check File Size (Bytes, KB, MB, GB) is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.

How to Use Check File Size (Bytes, KB, MB, GB)

  1. 1
    Select FilesDrag and drop or select files to inspect.
  2. 2
    Review MetricsInspect exact bytes and formatted sizes in a structured table.

Common Use Cases

  • Auditing attachment file sizes before sending email or uploading to cloud quotas
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