Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

The Board of Directors

ThredUp Inc.:

We consent to the use of our report incorporated by reference herein.

Our report refers to a change in the Company’s method of accounting for leases due to the adoption of Financial Accounting Standards Board Accounting Standards Codification 842, Leases, effective January 1, 2020.

/s/ KPMG LLP

San Francisco, California

March 26, 2021