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Document and Entity Information
May 13, 2024
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date May 13, 2024
Entity Central Index Key 0001703647
Entity File Number 001-39062
Entity Registrant Name Korro Bio, Inc.
Entity Incorporation State Country Code DE
Entity Tax Identification Number 47-2324450
Entity Address Address Line One One Kendall Square
Entity Address, Address Line Two Building 600-700
Entity Address, Address Line Three Suite 6-401
Entity Address City Or Town Cambridge
Entity Address Postal Zip Code 02139
Entity Address State Or Province MA
City Area Code (617)
Local Phone Number 468-1999
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Title of 12(b) Security Common stock, par value $0.001 per share
Trading Symbol KRRO
Security Exchange Name NASDAQ
Entity Emerging Growth Company true
Entity Ex Transition Period false