Business	3 Months Ended
Jun. 30, 2020
Accounting Policies [Abstract]
Business	1. Business Business RocketFuel Blockchain Company, a Nevada corporation (“RocketFuel” or the “Company”) was formed on January 12, 2018 for the purpose of bringing highly efficient check-out systems to eCommerce. These new check-out means based upon blockchain technology are designed to increase speed, security, and ease of use. Using RocketFuel’s technology, merchants can enable new impulse buying schemes that may be unavailable in present day eCommerce sites. On June 27, 2018, we consummated a transaction as contemplated by that certain Contribution Agreement made and entered into as of June 27, 2018 by and among B4MC Gold Mines, Inc. (“B4MC”), a Nevada corporation, and us. Pursuant to the Contribution Agreement, B4MC issued 17,001,312 shares of its $0.001 par value common stock to us in exchange for a 100% ownership interest in us resulting in 22,668,416 post-merger shares of B4MC common stock issued and outstanding. On September 25, 2018, B4MC changed its name to RocketFuel Blockchain, Inc.

The entire disclosure for the business description and basis of presentation concepts. Business description describes the nature and type of organization including but not limited to organizational structure as may be applicable to holding companies, parent and subsidiary relationships, business divisions, business units, business segments, affiliates and information about significant ownership of the reporting entity. Basis of presentation describes the underlying basis used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-URI http://asc.fasb.org/topic&trid=2122369

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-URI http://asc.fasb.org/topic&trid=2122149

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-URI http://asc.fasb.org/topic&trid=2134479

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