| No. | Single pass compiler | Multi pass compiler |
| 1 | A one-pass compiler is a compiler that passes through the source code of each compilation unit only once. | A multi-pass compiler is a type of compiler that processes the source code or abstract syntax tree of a program several times. |
| 2 | A one-pass compiler is faster than multi-pass compiler. | A multi-pass compiler is slower than single- pass compiler. |
| 3 | One-pass compiler are sometimes called narrow compiler. | Multi-pass compilers are sometimes called wide compiler. |
| 4 | Language like Pascal can be implemented with a single pass compiler. | Languages like Java require a multi-pass compiler. |
