| Cover | Nov. 12, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 12, 2021 |
| Entity File Number | 001-40060 |
| Entity Registrant Name | Longeveron Inc. |
| Entity Central Index Key | 0001721484 |
| Entity Tax Identification Number | 47-2174146 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 1951 NW 7th Avenue |
| Entity Address, Address Line Two | Suite 520 |
| Entity Address, City or Town | Miami |
| Entity Address, State or Province | FL |
| Entity Address, Postal Zip Code | 33136 |
| City Area Code | 305 |
| Local Phone Number | 909-0840 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Class A Common Stock, par value $.001 per share |
| Trading Symbol | LGVN |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
