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Document And Entity Information
 6 Months Ended
Jun. 30, 2022
Document Information [Line Items]  
Entity Central Index Key 0001341170
Entity Registrant Name EUROSEAS LTD.
Amendment Flag false
Current Fiscal Year End Date --12-31
Document Fiscal Period Focus Q2
Document Fiscal Year Focus 2022
Document Type 6-K
Document Period End Date Jun. 30, 2022
Entity File Number 001-33283
Entity Address, Address Line One 4 Messogiou & Evropis Street
Entity Address, Postal Zip Code 151 24
Entity Address, City or Town Maroussi
Entity Address, Country GR