# JetBrains/kotlin SLOC report

> As of 2026-08-26 (commit 3a578d6e27ad), JetBrains/kotlin contains 5,653,114 total lines: 2,451,017 code, 2,454,437 comments, 747,660 blank, across 82,973 files in 34 languages (top: Kotlin 75.9%). Counted with tokei via OctoCounts.

OctoCounts produced this report by resolving JetBrains/kotlin to commit 3a578d6e27ad, downloading the repository source archive, and counting every source file with tokei, the open-source line counter written in Rust. The table below breaks the count down by programming language into files, total lines, code lines, comment lines, and blank lines, so the figures can be compared across languages and projects. Results are cached by commit, tokei version, and analysis options, so counting the same revision again reproduces exactly these numbers.

## Repository size insights

This is a very large codebase by counted code lines. Code represents 43.4% of all lines, comments represent 43.4%, and the repository averages 30 code lines per file. Kotlin accounts for 75.9% of counted code.

| Language | Files | Lines | Code | Comments | Blanks |
| --- | ---: | ---: | ---: | ---: | ---: |
| Kotlin | 51,376 | 2,658,609 | 1,860,978 | 384,247 | 413,384 |
| Java | 3,356 | 480,075 | 350,744 | 61,748 | 67,583 |
| JSON | 251 | 58,055 | 58,055 | 0 | 0 |
| Swift | 336 | 48,333 | 44,631 | 908 | 2,794 |
| C++ | 211 | 38,375 | 29,855 | 2,460 | 6,060 |
| XML | 271 | 23,177 | 22,180 | 170 | 827 |
| C Header | 457 | 32,391 | 20,637 | 3,922 | 7,832 |
| TypeScript | 221 | 18,306 | 16,554 | 927 | 825 |
| C++ Header | 139 | 14,973 | 10,149 | 1,785 | 3,039 |
| C | 37 | 13,126 | 9,665 | 1,648 | 1,813 |
| Module-Definition | 709 | 7,086 | 6,102 | 0 | 984 |
| JavaScript | 331 | 6,950 | 5,821 | 217 | 912 |

Top language (Kotlin 75.9%). Generated at 2026-08-26T18:19:24.776816660+00:00. Canonical report: https://octocounts.com/github/JetBrains/kotlin

## Report FAQ

### How many lines of code does JetBrains/kotlin have?

JetBrains/kotlin has 5,653,114 total lines, including 2,451,017 code lines, 2,454,437 comment lines, and 747,660 blank lines.

### How was the JetBrains/kotlin line count measured?

OctoCounts resolved the public GitHub repository to commit 3a578d6e27ad, downloaded the source archive, counted it with tokei, and cached the report by commit, tokei version, and analysis options.

### What commit was counted for JetBrains/kotlin?

This OctoCounts report was generated from master at commit 3a578d6e27ad on 2026-08-26T18:19:24.776816660+00:00.

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