Let's Encrypt · classic
What is the maximum validity (days) for Let's Encrypt · classic?
For Let's Encrypt, profile or product is classic; maximum validity (days) is 90; still issuing tls certificates is yes, recorded from its source on 2026-08-18; source re-checked 2026-09-29.
Our default certificates are valid for 90 days.
— letsencrypt.org, retrieved 2026-08-18
- Certificate Authority
- Let's Encrypt
- Profile or Product
- classic our reading
- Maximum validity (days)
- 90 verified
- Still issuing TLS certificates
- yes our reading
- Notes
- The FAQ states the default lifetime; the profiles documentation names the default profile 'classic'. Let's Encrypt recommends renewing 90 day certificates every 60 days. There is no way to adjust these lifetimes. our reading
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
Where each value comes from
The value above is stated away from the sentence quoted with the answer, so the passage that states it is shown here too.
Still issuing TLS certificates
Let’s Encrypt offers Domain Validation (DV) certificates.
— all from letsencrypt.org, retrieved 2026-08-18
Source
- letsencrypt.orghttps://letsencrypt.org/docs/faq/