v3.25.2
S000094556 [Member] N-1A Cover
Oct. 01, 2025
Prospectus [Line Items]  
Document Type 485BPOS
Amendment Flag false
Registrant Name PUTNAM ETF TRUST
Entity Central Index Key 0001845809
Entity Investment Company Type N-1A
Document Period End Date Oct. 01, 2025
Prospectus Date Oct. 08, 2025