Document and Entity Information
Mar. 31, 2022
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Mar. 31, 2022
Trading Symbol UBX
Entity Registrant Name UNITY BIOTECHNOLOGY, INC.
Entity Central Index Key 0001463361
Entity Emerging Growth Company true
Entity Ex Transition Period false
Entity File Number 001-38470
Entity Tax Identification Number 26-4726035
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 285 East Grand Ave.
Entity Address, City or Town South San Francisco
Entity Address, State or Province CA
Entity Address, Postal Zip Code 94080
City Area Code (650)
Local Phone Number 416-1192
Title of 12(b) Security Common Stock, par value $0.0001 per share
Security Exchange Name NASDAQ
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false