How many lines of code are in Android 14?
You probably came here because you searched for how much code on your device runs. The rough answer is 66 million for explanations why putting a number on this is misleading read the next section. If you want to explore explore the data yourself there are two more detailed sections below.
To be Android or not to be Android
If you want to be extremely liberal in your definition, you can consider android an ecosystem. That would include everything from the bootloader to developer documentation to store apps to the smartwatch that only works on android. This would be practically impossible to count and easily reach the billions. An extremely conservative approach would look at the bare minimum lines of OS code that need to be compiled to pass the official Compatibility Test Suite. While theoratically feasible and potentially useful the average user probably wouldn't recognize this as a mobile operating system.
As a middle ground this counting examines the contents of the main AOSP repo. A current checkout of the repo is roughly 168 GiB large this is however on only code but also documnetation, developer tools and other ecosystem components. To break down this code I created aosp-analyzer a set of scripts and a program that produces a handy HTML file (a slightly modified version is used for the interactive statistics at the end of this article). Let's break it down some more:
It depends on androids repo tool to obtain the source code and tokei to do the heavy line counting work. During line counting I do a preliminary categorization of line data based on the top level directories. After those first two slow steps it begins its actual analysis work: It seperates test code and documentation from the rest (1), removes data only files (mainly random test data) (2) and assembles the html (3). In case you are curious about the details, I think the code is more explicit than this text could ever be.
Quick facts
Details
Code Comments Blank Java 3548821 1876125 633057 Cpp 3221947 485173 491753 CHeader 1872257 667868 297198 AssemblyGAS 654921 19977 13479 CppHeader 386409 19275 77673 Kotlin 307669 94850 47725 C 269806 60948 43839 AsciiDoc 188417 4585 34479 Python 94204 12163 17095 Rust 77782 10796 10109 Protobuf 61156 24354 16021 Svg 47454 76 50 JavaScript 42178 4356 3583 Makefile 16103 6932 4054 Go 13666 1943 1915 Sh 10553 3540 2154 RPMSpecfile 8892 360 1163 Autoconf 8483 164 302 LLVM 5081 142 770 Meson 4907 609 696 Html 4232 366 467 TypeScript 2968 500 170 CMake 2881 489 580 Glsl 2559 636 448 Bash 2264 720 441 Automake 1940 87 412 Css 1616 119 305 ModuleDef 1218 0 82 Ruby 995 256 233 Batch 739 43 263 Perl 698 268 82 LinkerScript 692 21 11 ReStructuredText 595 0 245 ObjectiveC 450 72 83 FlatBuffers 335 355 114 ObjectiveCpp 331 72 74 Prolog 131 27 22 FSharp 35 0 10 MsBuild 18 0 0 Lua 15 0 4 DreamMaker 0 0 0 Hex 0 0 0 Happy 0 0 0 D 0 0 0 Dockerfile 0 0 0 XSL 0 0 0 DeviceTree 0 0 0 Markdown 0 21398 6792 Text 0 340085 10720 Code Comments Blank Java 347204 170093 78460 TypeScript 30813 5491 3942 Bash 28636 5205 4168 Batch 21032 0 7717 Python 17232 1861 3351 Sh 15755 3066 2471 Kotlin 15237 8012 3359 Cpp 9336 1580 1653 Rust 5430 451 527 JavaScript 4181 2321 406 CHeader 3817 2601 1556 Html 3153 200 209 FreeMarker 3104 610 614 Go 2808 38 322 Protobuf 1149 118 213 Prolog 784 0 121 Makefile 386 218 129 Vue 192 0 62 Ruby 183 9 43 CMake 177 15 23 Sass 164 61 44 C 161 18 25 Sql 140 1 4 Svg 133 1 1 Css 113 60 27 Perl 90 1 12 Dockerfile 62 2 7 ModuleDef 31 2 4 AssemblyGAS 12 15 5 Text 0 19787 4572 Markdown 0 18860 6535 Code Comments Blank Cpp 13984266 2223594 2191526 C 10989153 1956059 1800989 CHeader 8343412 3474531 1667042 Rust 3891385 185339 369972 Java 3724938 1909706 673631 Python 2433186 260352 373893 CppHeader 2409435 448755 416157 AssemblyGAS 1264251 91378 148896 Assembly 504043 16459 45111 Protobuf 497046 538489 193996 ReStructuredText 490850 0 197535 Go 299896 78276 34515 CMake 296012 38688 32917 Autoconf 251301 45080 40728 Kotlin 224835 64806 36111 Sh 219317 63742 37641 CSharp 190775 39559 16865 VisualStudioProject 183365 513 83 Perl 169939 20959 20667 ObjectiveC 147739 25959 26207 Html 146854 13319 13624 JavaScript 110164 16290 9224 ModuleDef 101673 2103 6892 Makefile 94464 26033 24987 TypeScript 79005 19254 10603 ObjectiveCpp 74436 8901 13905 Glsl 58324 5284 13627 Svg 33923 160 17 Css 30465 1886 5159 Meson 30144 2366 3615 Sql 30004 11490 2080 Happy 26542 0 3239 Tex 25972 12696 3177 Php 24518 21790 5741 Lua 23389 1994 2012 Automake 20654 2990 2954 Ruby 20432 7268 4035 DeviceTree 19703 2293 3037 Bash 16928 6158 3433 VisualStudioSolution 15903 0 38 OCaml 15174 2752 1625 Batch 14797 1568 3682 Pascal 12342 3125 2117 Swig 10844 462 1720 Dockerfile 9394 4588 2739 Swift 9128 2366 987 FlatBuffers 7612 3666 2136 FortranLegacy 7163 7907 33 Pan 7122 542 692 D 6540 479 375 Sass 5790 869 770 RPMSpecfile 5627 129 582 Alex 3731 0 764 ActionScript 3567 2608 746 MsBuild 3502 446 235 XSL 3371 502 364 VB6 3091 651 404 Dart 2744 411 491 Hex 2426 0 133 R 2332 989 585 OpenType 2157 289 339 Ada 2054 457 441 Velocity 2037 468 525 Groovy 1774 1715 434 Hlsl 1703 72 287 PowerShell 1545 568 291 Scons 1473 284 354 Prolog 1104 0 156 LinkerScript 1060 57 80 Julia 930 473 143 LLVM 866 19 35 Elisp 772 516 241 VimScript 770 96 86 Processing 724 89 32 Rakefile 696 81 112 Lisp 502 81 109 Tsx 457 99 53 Arduino 389 38 56 Pest 289 72 83 Handlebars 281 0 27 Stratego 223 0 14 Nix 185 2 22 DotNetResource 174 195 1 Gherkin 133 14 32 CShell 129 20 22 RubyHtml 102 0 25 XcodeConfig 95 208 29 Jsonnet 93 108 12 Zig 73 0 10 ABNF 69 1 23 FortranModern 56 0 4 Graphql 51 0 0 Fish 42 14 13 VBScript 12 0 3 AsciiDoc 6 2 2 Zsh 4 26 2 Tcl 4 0 0 Scala 0 0 0 FSharp 0 0 0 Text 0 19146293 186135 RON 0 0 0 GDB 0 0 0 Asn1 0 0 0 Less 0 0 0 Forth 0 0 0 Fstar 0 0 0 SpecmanE 0 0 0 Jupyter 0 0 0 Markdown 0 351987 123491 Code Comments Blank Rust 338973 4160 5349 Java 334887 131969 60094 Go 159363 36614 31461 Python 104113 11674 15446 Kotlin 46886 18451 7649 Makefile 29133 11434 6029 Cpp 17433 4215 3508 Sh 7826 2989 1602 CHeader 6248 3319 1742 Perl 6188 602 773 C 4181 1145 699 Protobuf 3395 2742 1028 Css 3221 155 599 JavaScript 3009 258 246 TypeScript 2421 455 217 Svg 1661 9 7 Bash 1288 1269 414 AssemblyGAS 1100 255 167 Html 979 37 83 VisualStudioProject 876 0 0 Batch 699 84 222 CSharp 670 1 83 CMake 552 116 88 XSL 398 34 42 CppHeader 159 61 47 Elisp 110 3 18 VisualStudioSolution 82 0 2 Pan 61 5 11 Dockerfile 38 3 8 Autoconf 3 0 0 DeviceTree 0 0 0 Arduino 0 0 0 Text 0 89034 6625 Assembly 0 0 0 Glsl 0 0 0 DreamMaker 0 0 0 FSharp 0 0 0 Markdown 0 5666 1874 Cobol 0 0 0 Code Comments Blank Java 2740222 870461 458470 Cpp 501530 102902 90100 Kotlin 175877 54173 26060 CHeader 131425 100681 38990 Rust 97602 9095 14711 Python 40617 3603 7218 C 19693 4656 3523 Protobuf 12988 6554 4683 RPMSpecfile 7809 0 295 Sh 3868 1314 920 Bash 2130 227 321 Makefile 1359 3175 444 Html 1256 34 120 DeviceTree 441 8 37 Batch 392 0 133 Groovy 384 54 64 Css 366 120 23 AssemblyGAS 336 220 88 Lua 311 15 40 FlatBuffers 299 72 55 CMake 242 7 45 CSharp 179 8 37 JavaScript 136 50 25 LLVM 106 0 24 Prolog 70 0 9 Dockerfile 60 18 7 Glsl 55 19 13 CppHeader 38 68 19 LinkerScript 16 0 2 Autoconf 15 0 2 Markdown 0 4632 1462 Text 0 58001 3437 SRecode 0 0 0 Sql 0 0 0 TypeScript 0 0 0 Perl 0 0 0 Code Comments Blank Cpp 13797569 1339462 1728433 CHeader 10171784 346968 174971 Java 9591246 1804891 1764810 Python 2896676 304800 501185 C 2000847 474412 393535 Assembly 1800654 65 60316 Kotlin 727274 125977 111043 LLVM 698946 503609 161851 Html 693207 11964 11267 Rust 565184 31456 76542 Go 501280 38043 50517 TypeScript 340020 94278 6402 Sh 311607 92151 65214 AssemblyGAS 207480 108735 61571 CppHeader 186979 15026 23488 CSharp 127862 6511 11532 Autoconf 116579 2668 8793 Glsl 72231 57 1041 VisualStudioProject 64489 50 28 ObjectiveC 61039 71952 16871 Protobuf 57795 29442 13889 Groovy 46852 25188 12710 FortranLegacy 38674 15550 78 XSL 38083 56395 16031 ObjectiveCpp 30503 26014 8205 Perl 26872 7725 4754 Php 26793 11303 5253 CMake 25676 5389 4255 Ruby 25490 1756 4402 Hlsl 24292 20 1920 Makefile 22202 11475 8018 JavaScript 20302 2739 2830 Bash 14480 8792 3380 DeviceTree 14431 3624 764 ReStructuredText 13839 0 5497 Automake 9982 853 2208 Swift 8600 385 1119 Dart 7574 186 938 DreamMaker 6928 1342 1 Forth 6709 54 12 Dockerfile 6161 4431 2194 Lua 4861 944 949 AsciiDoc 4146 263 802 Batch 3899 96 954 Css 3761 160 633 Svg 3584 52 18 Meson 3062 478 363 Sql 2930 1130 334 Velocity 2630 603 783 OCaml 2617 551 617 Prolog 2157 135 185 FlatBuffers 2035 443 471 D 1885 0 14 VisualStudioSolution 1597 0 10 Fstar 1419 0 0 Scons 1178 278 459 R 1078 553 368 Cobol 725 0 0 Happy 663 0 3204 Hex 648 0 2 ModuleDef 633 20 55 MsBuild 630 58 63 Sass 495 9 111 Ada 354 103 162 LinkerScript 209 0 32 FSharp 193 0 49 OpenType 176 1 24 ActionScript 148 10 46 Arduino 132 2 23 Pest 114 39 29 Alex 64 0 1 Pan 56 6 8 FreeMarker 51 0 10 GDB 44 64 20 Rakefile 36 2 12 Scala 29 46 15 Elisp 24 16 4 RON 24 0 0 PowerShell 20 5 7 FortranModern 18 260 3 Tex 16 0 10 Tcl 11 6 6 Asn1 10 0 4 SRecode 4 0 0 Pascal 1 0 0 SpecmanE 1 0 0 Markdown 0 63989 22466 Text 0 13618312 369669 VBScript 0 2 0 Code Comments Blank Html 10974672 583388 179733 ReStructuredText 362633 0 100966 JavaScript 44137 9618 10039 Css 40443 3525 4623 Svg 37831 352 93 Cpp 24665 4239 1577 AsciiDoc 15438 578 4479 Python 10482 5172 3203 C 9758 6376 2632 Autoconf 8825 20612 8057 Tex 7119 2734 1388 Java 6634 967 1077 XSL 5752 456 397 Less 5538 1533 1178 Sass 5192 204 550 RPMSpecfile 3475 2 1723 VisualStudioProject 2658 0 0 Makefile 2504 344 565 Php 1779 1 8 Batch 1530 15 240 Perl 1144 406 303 Sh 1133 320 237 CMake 869 246 134 Kotlin 858 147 95 Automake 693 305 208 Meson 599 36 88 Velocity 403 30 91 Bash 339 143 94 Protobuf 232 30 30 CHeader 160 447 65 Rust 93 0 30 Go 53 11 7 Ruby 35 31 11 Lua 4 2 0 Text 0 103949 20253 Markdown 0 234340 85049