| Document and Entity Information | Sep. 26, 2023 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Sep. 26, 2023 |
| Entity Registrant Name | ROADZEN INC. |
| Entity Incorporation, State or Country Code | D8 |
| Entity File Number | 001-41094 |
| Entity Tax Identification Number | 98-1600102 |
| Entity Address, Address Line One | 111 Anza Blvd. |
| Entity Address, Address Line Two | Suite 109 |
| Entity Address, City or Town | Burlingame |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94010 |
| City Area Code | 347 |
| Local Phone Number | 745-6448 |
| Entity Information, Former Legal or Registered Name | Vahanna Tech Edge Acquisition I Corp. |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Current Fiscal Year End Date | --03-31 |
| Amendment Flag | false |
| Entity Central Index Key | 0001868640 |
| Former Address [Member] | |
| Document Information [Line Items] | |
| Entity Address, Address Line One | 1230 Avenue of the Americas |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10020 |
| Common Stock [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Ordinary Shares, par value $0.0001 per share |
| Trading Symbol | RDZN |
| Security Exchange Name | NASDAQ |
| Redeemable warrants, each warrant exercisable for one Class A ordinary share, each at an exercise price of $11.50 per share [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Warrants, each warrant exercisable for one ordinary share, each at an exercise price of $11.50 per share |
| Trading Symbol | RDZNW |
| Security Exchange Name | NASDAQ |
