| Cover | Jan. 15, 2025 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Jan. 15, 2025 |
| Entity Registrant Name | Certara, Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-39799 |
| Entity Tax Identification Number | 82-2180925 |
| Entity Address, Address Line One | 4 Radnor Corporate Center |
| Entity Address, Address Line Two | Suite 350 |
| Entity Address, City or Town | Radnor |
| Entity Address, State or Province | PA |
| Entity Address, Postal Zip Code | 19087 |
| City Area Code | 415 |
| Local Phone Number | 237-8272 |
| 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 $0.01 per share |
| Trading Symbol | CERT |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001827090 |
| Amendment Flag | false |
| Document Fiscal Year Focus | 2025 |
| Document Fiscal Period Focus | FY |
