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    ACCESSION NUMBER:		0001564590-23-006014
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		15
    CONFORMED PERIOD OF REPORT:	20230421
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20230421
    DATE AS OF CHANGE:		20230421

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			ACME UNITED CORP
    		CENTRAL INDEX KEY:			0000002098
    		STANDARD INDUSTRIAL CLASSIFICATION:	CUTLERY, HANDTOOLS & GENERAL HARDWARE [3420]
    		IRS NUMBER:				060236700
    		STATE OF INCORPORATION:			CT
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-07698
    		FILM NUMBER:		23835024

    	BUSINESS ADDRESS:
    		STREET 1:		1 WATERVIEW DRIVE
    		CITY:			SHELTON
    		STATE:			CT
    		ZIP:			06484
    		BUSINESS PHONE:		203-254-6060

    	MAIL ADDRESS:
    		STREET 1:		1 WATERVIEW DRIVE
    		CITY:			SHELTON
    		STATE:			CT
    		ZIP:			06484

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	ACME SHEAR CO
    		DATE OF NAME CHANGE:	19710713
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    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>acu-8k_20230421.htm
    <DESCRIPTION>8-K Q1 2023 EARNINGS RELEASE
    <TEXT>
    Document 1 - file: acu-8k_20230421.htm

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    <SEQUENCE>2
    <FILENAME>acu-ex991_6.htm
    <DESCRIPTION>EX-99.1
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    <SEQUENCE>3
    <FILENAME>gc3jgf15plbi000002.jpg
    <DESCRIPTION>GRAPHIC
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    <DESCRIPTION>GRAPHIC
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    <FILENAME>acu-20230421.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
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    <FILENAME>acu-20230421_lab.xml
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    <TEXT>
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    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
    <TEXT>
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    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
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    <TYPE>XML
    <SEQUENCE>9
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    <TEXT>
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    <TYPE>EXCEL
    <SEQUENCE>10
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    <TEXT>
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    <SEQUENCE>11
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    <TEXT>
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    <SEQUENCE>12
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
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    <TYPE>XML
    <SEQUENCE>13
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    <TEXT>
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    <TYPE>JSON
    <SEQUENCE>15
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    <SEQUENCE>16
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    <TEXT>
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