Based on the tagging of your question, you're using QuickBooks Self-Employed. We don't have a direct way of converting your data to Sage. You can only pull up your QBSE reports and use it as reference when entering your transactions to Sage. You can use this link for reference: Export your data from QuickBooks Self-Employed.
Aside from that, you can also look for third-party service online that can assist you in converting the data.
We'll be right here if you require additional assistance.
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