This repository (and the following table) contains a complete list of all Fortran Standard keywords, including intrinsic procedure argument names (specifiers). This list conforms to the current latest Fortran Standard (2018). See the Excel and the text files for other formats of this table.
| keyword | category |
|---|---|
| ABSTRACT | attribute |
| ALLOCATABLE | attribute |
| ASSIGNMENT | attribute |
| ASYNCHRONOUS | attribute |
| BIND | attribute |
| CODIMENSION | attribute |
| CONTIGUOUS | attribute |
| DEFAULT | attribute |
| DEFERRED | attribute |
| DIMENSION | attribute |
| ELEMENTAL | attribute |
| EXTENDS | attribute |
| EXTERNAL | attribute |
| IMPURE | attribute |
| INTENT(IN) | attribute |
| INTENT(INOUT) | attribute |
| INTENT(OUT) | attribute |
| INTRINSIC | attribute |
| LOCAL | attribute |
| LOCAL_INIT | attribute |
| LOGICAL | attribute |
| NON_INTRINSIC | attribute |
| NON_OVERRIDABLE | attribute |
| NON_RECURSIVE | attribute |
| NOPASS | attribute |
| OPERATOR | attribute |
| OPTIONAL | attribute |
| PARAMETER | attribute |
| PASS | attribute |
| POINTER | attribute |
| PRIVATE | attribute |
| PROTECTED | attribute |
| PUBLIC | attribute |
| PURE | attribute |
| READ(FORMATTED) | attribute |
| READ(UNFORMATTED) | attribute |
| RECURSIVE | attribute |
| SAVE | attribute |
| SEQUENCE | attribute |
| SHARED | attribute |
| TARGET | attribute |
| VALUE | attribute |
| VOLATILE | attribute |
| WRITE(FORMATTED) | attribute |
| WRITE(UNFORMATTED) | attribute |
| C_ALERT | constant |
| C_BACKSPACE | constant |
| C_BOOL | constant |
| C_CARRIAGE_RETURN | constant |
| C_CHAR | constant |
| C_DOUBLE | constant |
| C_DOUBLE_COMPLEX | constant |
| C_FLOAT | constant |
| C_FLOAT_COMPLEX | constant |
| C_FORM_FEED | constant |
| C_HORIZONTAL_TAB | constant |
| C_INT | constant |
| C_INT_FAST16_T | constant |
| C_INT_FAST32_T | constant |
| C_INT_FAST64_T | constant |
| C_INT_FAST8_T | constant |
| C_INT_LEAST16_T | constant |
| C_INT_LEAST32_T | constant |
| C_INT_LEAST64_T | constant |
| C_INT_LEAST8_T | constant |
| C_INT16_T | constant |
| C_INT32_T | constant |
| C_INT64_T | constant |
| C_INT8_T | constant |
| C_INTMAX_T | constant |
| C_INTPTR_T | constant |
| C_LONG | constant |
| C_LONG_DOUBLE | constant |
| C_LONG_DOUBLE_COMPLEX | constant |
| C_LONG_LONG | constant |
| C_NEW_LINE | constant |
| C_NULL_CHAR | constant |
| C_NULL_FUNPTR | constant |
| C_NULL_PTR | constant |
| C_SHORT | constant |
| C_SIGNED_CHAR | constant |
| C_SIZE_T | constant |
| C_VERTICAL_TAB | constant |
| CHARACTER_KINDS | constant |
| CHARACTER_STORAGE_SIZE | constant |
| CURRENT_TEAM | constant |
| ERROR_UNIT | constant |
| FILE_STORAGE_SIZE | constant |
| IEEE_ALL | constant |
| IEEE_ALL | constant |
| IEEE_AWAY | constant |
| IEEE_DATATYPE | constant |
| IEEE_DENORMAL | constant |
| IEEE_DIVIDE | constant |
| IEEE_DIVIDE_BY_ZERO | constant |
| IEEE_DOWN | constant |
| IEEE_HALTING | constant |
| IEEE_INEXACT | constant |
| IEEE_INEXACT_FLAG | constant |
| IEEE_INF | constant |
| IEEE_INVALID | constant |
| IEEE_INVALID_FLAG | constant |
| IEEE_NAN | constant |
| IEEE_NEAREST | constant |
| IEEE_NEGATIVE_DENORMAL | constant |
| IEEE_NEGATIVE_INF | constant |
| IEEE_NEGATIVE_NORMAL | constant |
| IEEE_NEGATIVE_SUBNORMAL | constant |
| IEEE_NEGATIVE_ZERO | constant |
| IEEE_OTHER | constant |
| IEEE_OTHER_VALUE | constant |
| IEEE_OVERFLOW | constant |
| IEEE_POSITIVE_DENORMAL | constant |
| IEEE_POSITIVE_INF | constant |
| IEEE_POSITIVE_NORMAL | constant |
| IEEE_POSITIVE_SUBNORMAL | constant |
| IEEE_POSITIVE_ZERO | constant |
| IEEE_ROUNDING | constant |
| IEEE_SIGNALING_NAN | constant |
| IEEE_SQRT | constant |
| IEEE_SUBNORMAL | constant |
| IEEE_TO_ZERO | constant |
| IEEE_UNDERFLOW | constant |
| IEEE_UNDERFLOW_FLAG | constant |
| IEEE_UP | constant |
| IEEE_USUAL | constant |
| INITIAL_TEAM | constant |
| INPUT_UNIT | constant |
| INT16 | constant |
| INT32 | constant |
| INT64 | constant |
| INT8 | constant |
| INTEGER_KINDS | constant |
| IOSTAT_END | constant |
| IOSTAT_EOR | constant |
| IOSTAT_INQUIRE_INTERNAL_UNIT | constant |
| LOGICAL_KINDS | constant |
| NUMERIC_STORAGE_SIZE | constant |
| OUTPUT_UNIT | constant |
| PARENT_TEAM | constant |
| REAL_KINDS | constant |
| REAL128 | constant |
| REAL32 | constant |
| REAL64 | constant |
| STAT_FAILED_IMAGE | constant |
| STAT_LOCKED | constant |
| STAT_LOCKED_OTHER_IMAGE | constant |
| STAT_STOPPED_IMAGE | constant |
| STAT_UNLOCKED | constant |
| STAT_UNLOCKED_FAILED_IMAGE | constant |
| ACHAR | function_elemental |
| ACOS | function_elemental |
| ACOSH | function_elemental |
| ADJUSTL | function_elemental |
| ADJUSTR | function_elemental |
| AIMAG | function_elemental |
| AINT | function_elemental |
| ANINT | function_elemental |
| ASIN | function_elemental |
| ASINH | function_elemental |
| ATAN | function_elemental |
| ATAN2 | function_elemental |
| ATANH | function_elemental |
| BESSEL_J0 | function_elemental |
| BESSEL_J1 | function_elemental |
| BESSEL_JN | function_elemental |
| BESSEL_Y0 | function_elemental |
| BESSEL_Y1 | function_elemental |
| BESSEL_YN | function_elemental |
| BGE | function_elemental |
| BGT | function_elemental |
| BLE | function_elemental |
| BLT | function_elemental |
| BTEST | function_elemental |
| CEILING | function_elemental |
| CHAR | function_elemental |
| CMPLX | function_elemental |
| CONJG | function_elemental |
| COS | function_elemental |
| COSH | function_elemental |
| DBLE | function_elemental |
| DIM | function_elemental |
| DPROD | function_elemental |
| DSHIFTL | function_elemental |
| DSHIFTR | function_elemental |
| ERF | function_elemental |
| ERFC | function_elemental |
| ERFC_SCALED | function_elemental |
| EXP | function_elemental |
| EXPONENT | function_elemental |
| FLOOR | function_elemental |
| FRACTION | function_elemental |
| GAMMA | function_elemental |
| HYPOT | function_elemental |
| IACHAR | function_elemental |
| IAND | function_elemental |
| IBCLR | function_elemental |
| IBITS | function_elemental |
| IBSET | function_elemental |
| ICHAR | function_elemental |
| IEEE_CLASS | function_elemental |
| IEEE_COPY_SIGN | function_elemental |
| IEEE_FMA | function_elemental |
| IEEE_GET_FLAG | function_elemental |
| IEEE_GET_HALTING_MODE | function_elemental |
| IEEE_INT | function_elemental |
| IEEE_IS_FINITE | function_elemental |
| IEEE_IS_NAN | function_elemental |
| IEEE_IS_NEGATIVE | function_elemental |
| IEEE_IS_NORMAL | function_elemental |
| IEEE_LOGB | function_elemental |
| IEEE_MAX_NUM | function_elemental |
| IEEE_MAX_NUM_MAG | function_elemental |
| IEEE_MIN_NUM | function_elemental |
| IEEE_MIN_NUM_MAG | function_elemental |
| IEEE_NEXT_AFTER | function_elemental |
| IEEE_NEXT_DOWN | function_elemental |
| IEEE_NEXT_UP | function_elemental |
| IEEE_QUIET_EQ | function_elemental |
| IEEE_QUIET_GE | function_elemental |
| IEEE_QUIET_GT | function_elemental |
| IEEE_QUIET_LE | function_elemental |
| IEEE_QUIET_LT | function_elemental |
| IEEE_QUIET_NAN | function_elemental |
| IEEE_QUIET_NE | function_elemental |
| IEEE_REAL | function_elemental |
| IEEE_REM | function_elemental |
| IEEE_RINT | function_elemental |
| IEEE_SCALB | function_elemental |
| IEEE_SIGNALING_EQ | function_elemental |
| IEEE_SIGNALING_GE | function_elemental |
| IEEE_SIGNALING_GT | function_elemental |
| IEEE_SIGNALING_LE | function_elemental |
| IEEE_SIGNALING_LT | function_elemental |
| IEEE_SIGNALING_NE | function_elemental |
| IEEE_SIGNBIT | function_elemental |
| IEEE_UNORDERED | function_elemental |
| IEEE_VALUE | function_elemental |
| IEOR | function_elemental |
| IMAGE_STATUS | function_elemental |
| INT | function_elemental |
| IOR | function_elemental |
| ISHFT | function_elemental |
| ISHFTC | function_elemental |
| LEADZ | function_elemental |
| LEN_TRIM | function_elemental |
| LGE | function_elemental |
| LGT | function_elemental |
| LLE | function_elemental |
| LLT | function_elemental |
| LOG | function_elemental |
| LOG_GAMMA | function_elemental |
| LOG10 | function_elemental |
| LOGICAL | function_elemental |
| MASKL | function_elemental |
| MASKR | function_elemental |
| MAX | function_elemental |
| MIN | function_elemental |
| MOD | function_elemental |
| MODULO | function_elemental |
| MVBITS | function_elemental |
| NEAREST | function_elemental |
| NINT | function_elemental |
| NOT | function_elemental |
| OUT_OF_RANGE | function_elemental |
| POPCNT | function_elemental |
| POPPAR | function_elemental |
| REAL | function_elemental |
| SCALE | function_elemental |
| SCAN | function_elemental |
| SET_EXPONENT | function_elemental |
| SHAPE | function_elemental |
| SHIFTA | function_elemental |
| SHIFTL | function_elemental |
| SHIFTR | function_elemental |
| SIGN | function_elemental |
| SIN | function_elemental |
| SINH | function_elemental |
| SPACING | function_elemental |
| SQRT | function_elemental |
| TAN | function_elemental |
| TANH | function_elemental |
| TRAILZ | function_elemental |
| VERIFY | function_elemental |
| ALLOCATED | function_inquiry |
| ASSOCIATED | function_inquiry |
| BIT_SIZE | function_inquiry |
| C_SIZEOF | function_inquiry |
| COSHAPE | function_inquiry |
| DIGITS | function_inquiry |
| EPSILON | function_inquiry |
| EXTENDS_TYPE_OF | function_inquiry |
| FAILED_IMAGES | function_inquiry |
| HUGE | function_inquiry |
| IEEE_SUPPORT_DATATYPE | function_inquiry |
| IEEE_SUPPORT_DENORMAL | function_inquiry |
| IEEE_SUPPORT_DIVIDE | function_inquiry |
| IEEE_SUPPORT_INF | function_inquiry |
| IEEE_SUPPORT_IO | function_inquiry |
| IEEE_SUPPORT_NAN | function_inquiry |
| IEEE_SUPPORT_SQRT | function_inquiry |
| IEEE_SUPPORT_STANDARD | function_inquiry |
| IEEE_SUPPORT_SUBNORMAL | function_inquiry |
| IEEE_SUPPORT_UNDERFLOW_CONTROL | function_inquiry |
| IS_CONTIGUOUS | function_inquiry |
| IS_IOSTAT_END | function_inquiry |
| IS_IOSTAT_EOR | function_inquiry |
| KIND | function_inquiry |
| LBOUND | function_inquiry |
| LCOBOUND | function_inquiry |
| LEN | function_inquiry |
| MAXEXPONENT | function_inquiry |
| MINEXPONENT | function_inquiry |
| NEW_LINE | function_inquiry |
| PRECISION | function_inquiry |
| PRESENT | function_inquiry |
| RADIX | function_inquiry |
| RANGE | function_inquiry |
| RANK | function_inquiry |
| SAME_TYPE_AS | function_inquiry |
| SIZE | function_inquiry |
| STORAGE_SIZE | function_inquiry |
| TINY | function_inquiry |
| UBOUND | function_inquiry |
| UCOBOUND | function_inquiry |
| ALL | function_transformational |
| ANY | function_transformational |
| BESSEL_JN | function_transformational |
| BESSEL_YN | function_transformational |
| C_ASSOCIATED | function_transformational |
| C_FUNLOC | function_transformational |
| C_LOC | function_transformational |
| COMMAND_ARGUMENT_COUNT | function_transformational |
| COMPILER_OPTIONS | function_transformational |
| COMPILER_VERSION | function_transformational |
| COUNT | function_transformational |
| CSHIFT | function_transformational |
| DOT_PRODUCT | function_transformational |
| EOSHIFT | function_transformational |
| FINDLOC | function_transformational |
| GET_TEAM | function_transformational |
| IALL | function_transformational |
| IANY | function_transformational |
| IEEE_SELECTED_REAL_KIND | function_transformational |
| IEEE_SUPPORT_FLAG | function_transformational |
| IEEE_SUPPORT_HALTING | function_transformational |
| IEEE_SUPPORT_ROUNDING | function_transformational |
| IMAGE_INDEX | function_transformational |
| INDEX | function_transformational |
| IPARITY | function_transformational |
| MATMUL | function_transformational |
| MAXLOC | function_transformational |
| MAXVAL | function_transformational |
| MERGE | function_transformational |
| MERGE_BITS | function_transformational |
| MINLOC | function_transformational |
| MINVAL | function_transformational |
| NORM2 | function_transformational |
| NULL | function_transformational |
| NUM_IMAGES | function_transformational |
| PACK | function_transformational |
| PARITY | function_transformational |
| PRODUCT | function_transformational |
| REDUCE | function_transformational |
| REPEAT | function_transformational |
| RESHAPE | function_transformational |
| SELECTED_CHAR_KIND | function_transformational |
| SELECTED_INT_KIND | function_transformational |
| SELECTED_REAL_KIND | function_transformational |
| SPREAD | function_transformational |
| STOPPED_IMAGES | function_transformational |
| SUM | function_transformational |
| TEAM_NUMBER | function_transformational |
| THIS_IMAGE | function_transformational |
| TRANSPOSE | function_transformational |
| TRIM | function_transformational |
| UNPACK | function_transformational |
| CFI_address | function_void |
| CFI_allocate | function_void |
| CFI_deallocate | function_void |
| CFI_establish | function_void |
| CFI_is_contiguous | function_void |
| CFI_section | function_void |
| CFI_select_part | function_void |
| CFI_setpointer | function_void |
| mpi | module_extension |
| mpi_f08 | module_extension |
| OMP_LIB | module_extension |
| OMP_LIB_KINDS | module_extension |
| OPENACC | module_extension |
| IEEE_ARITHMETIC | module_intrinsic |
| IEEE_EXCEPTIONS | module_intrinsic |
| IEEE_FEATURES | module_intrinsic |
| ISO_C_BINDING | module_intrinsic |
| ISO_FORTRAN_ENV | module_intrinsic |
| ACCESS | specifier |
| ACQUIRED_LOCK | specifier |
| ACTION | specifier |
| ADVANCE | specifier |
| ASYNCHRONOUS | specifier |
| BLANK | specifier |
| DECIMAL | specifier |
| DELIM | specifier |
| DIRECT | specifier |
| ENCODING | specifier |
| EOR | specifier |
| ERR | specifier |
| ERRMSG | specifier |
| EXIST | specifier |
| FILE | specifier |
| FMT | specifier |
| FORM | specifier |
| FORMATTED | specifier |
| ID | specifier |
| IOLENGTH | specifier |
| IOMSG | specifier |
| IOSTAT | specifier |
| MOLD | specifier |
| NAME | specifier |
| NAMED | specifier |
| NEW_INDEX | specifier |
| NEWUNIT | specifier |
| NEXTREC | specifier |
| NML | specifier |
| NUMBER | specifier |
| OPENED | specifier |
| PAD | specifier |
| PENDING | specifier |
| POS | specifier |
| POSITION | specifier |
| QUIET | specifier |
| READ | specifier |
| READWRITE | specifier |
| REC | specifier |
| RECL | specifier |
| ROUND | specifier |
| SEQUENTIAL | specifier |
| SIGN | specifier |
| SIZE | specifier |
| SOURCE | specifier |
| STAT | specifier |
| STATUS | specifier |
| STREAM | specifier |
| TEAM | specifier |
| TEAM_NUMBER | specifier |
| UNFORMATTED | specifier |
| UNIT | specifier |
| UNTIL_COUNT | specifier |
| WRITE | specifier |
| ALLOCATABLE | statement |
| ALLOCATE | statement |
| ASSIGN | statement |
| ASSOCIATE(...) | statement |
| ASYNCHRONOUS | statement |
| BACKSPACE | statement |
| BIND | statement |
| BLOCK | statement |
| BLOCK DATA | statement |
| CALL | statement |
| CASE | statement |
| CHANGE TEAM | statement |
| CHANGE TEAM(...) | statement |
| CLASS | statement |
| CLASS DEFAULT | statement |
| CLASS IS | statement |
| CLOSE | statement |
| COMMON | statement |
| CONTAINS | statement |
| CONTIGUOUS | statement |
| CONTINUE | statement |
| CRITICAL | statement |
| CYCLE | statement |
| DATA | statement |
| DEALLOCATE | statement |
| DIMENSION | statement |
| DO | statement |
| DO CONCURRENT(...) | statement |
| DO WHILE(...) | statement |
| DOUBLE PRECISION | statement |
| ELSE | statement |
| ELSE IF | statement |
| ELSEWHERE | statement |
| END | statement |
| END ASSOCIATE | statement |
| END BLOCK | statement |
| END BLOCK | statement |
| END BLOCK DATA | statement |
| END CRITICAL | statement |
| END DO | statement |
| END ENUM | statement |
| END FORALL | statement |
| END FUNCTION | statement |
| END IF | statement |
| END INTERFACE | statement |
| END MODULE | statement |
| END PROCEDURE | statement |
| END PROGRAM | statement |
| END SELECT | statement |
| END SUBMODULE | statement |
| END SUBROUTINE | statement |
| END TEAM | statement |
| END TYPE | statement |
| END WHERE | statement |
| ENDFILE | statement |
| ENTRY | statement |
| ENUM | statement |
| ENUMERATOR | statement |
| EQUIVALENCE | statement |
| ERROR STOP | statement |
| EVENT POST | statement |
| EVENT WAIT | statement |
| EXIT | statement |
| EXTERNAL | statement |
| FAIL IMAGE | statement |
| FINAL | statement |
| FLUSH | statement |
| FORALL | statement |
| FORALL(...) | statement |
| FORM TEAM | statement |
| FORMAT | statement |
| FUNCTION | statement |
| GENERIC | statement |
| GO TO | statement |
| IF | statement |
| IF (...) THEN | statement |
| IMPLICIT | statement |
| IMPLICIT NONE | statement |
| IMPORT | statement |
| INCLUDE | statement |
| INQUIRE | statement |
| INTERFACE | statement |
| INTRINSIC | statement |
| LOCK | statement |
| MODULE | statement |
| NAMELIST | statement |
| NULLIFY | statement |
| ONLY | statement |
| OPEN | statement |
| OPTIONAL | statement |
| PARAMETER | statement |
| PAUSE | statement |
| POINTER | statement |
| statement | |
| PRIVATE | statement |
| PROCEDURE | statement |
| PROGRAM | statement |
| PROTECTED | statement |
| PUBLIC | statement |
| RANK DEFAULT | statement |
| READ | statement |
| RESULT | statement |
| RETURN | statement |
| REWIND | statement |
| SAVE | statement |
| SELECT CASE | statement |
| SELECT CASE(...) | statement |
| SELECT RANK | statement |
| SELECT RANK(...) | statement |
| SELECT TYPE | statement |
| SELECT TYPE(...) | statement |
| SEQUENCE | statement |
| STOP | statement |
| SUBMODULE | statement |
| SUBROUTINE | statement |
| SYNC ALL | statement |
| SYNC IMAGES | statement |
| SYNC MEMORY | statement |
| SYNC TEAM | statement |
| TARGET | statement |
| TYPE | statement |
| TYPE IS | statement |
| UNLOCK | statement |
| USE | statement |
| VALUE | statement |
| VOLATILE | statement |
| WAIT | statement |
| WHERE(...) | statement |
| WRITE | statement |
| C_F_POINTER | subroutine |
| CPU_TIME | subroutine |
| DATE_AND_TIME | subroutine |
| EVENT_QUERY | subroutine |
| EXECUTE_COMMAND_LINE | subroutine |
| GET_COMMAND | subroutine |
| GET_COMMAND_ARGUMENT | subroutine |
| GET_ENVIRONMENT_VARIABLE | subroutine |
| IEEE_GET_MODES | subroutine |
| IEEE_GET_ROUNDING_MODE | subroutine |
| IEEE_GET_STATUS | subroutine |
| IEEE_GET_UNDERFLOW_MODE | subroutine |
| IEEE_SET_MODES | subroutine |
| IEEE_SET_ROUNDING_MODE | subroutine |
| IEEE_SET_STATUS | subroutine |
| IEEE_SET_UNDERFLOW_MODE | subroutine |
| MOVE_ALLOC | subroutine |
| RANDOM_INIT | subroutine |
| RANDOM_NUMBER | subroutine |
| RANDOM_SEED | subroutine |
| SYSTEM_CLOCK | subroutine |
| ATOMIC_ADD | subroutine_atomic |
| ATOMIC_AND | subroutine_atomic |
| ATOMIC_CAS | subroutine_atomic |
| ATOMIC_DEFINE | subroutine_atomic |
| ATOMIC_FETCH_ADD | subroutine_atomic |
| ATOMIC_FETCH_AND | subroutine_atomic |
| ATOMIC_FETCH_OR | subroutine_atomic |
| ATOMIC_FETCH_XOR | subroutine_atomic |
| ATOMIC_INT_KIND | subroutine_atomic |
| ATOMIC_LOGICAL_KIND | subroutine_atomic |
| ATOMIC_OR | subroutine_atomic |
| ATOMIC_REF | subroutine_atomic |
| ATOMIC_XOR | subroutine_atomic |
| CO_BROADCAST | subroutine_collective |
| CO_MAX | subroutine_collective |
| CO_MIN | subroutine_collective |
| CO_REDUCE | subroutine_collective |
| CO_SUM | subroutine_collective |
| C_F_PROCPOINTER | subroutine_pure |
| IEEE_SET_FLAG | subroutine_pure |
| IEEE_SET_HALTING_MODE | subroutine_pure |
| MOVE_ALLOC | subroutine_pure |
| C_FUNPTR | type_derived |
| C_PTR | type_derived |
| CFI_cdesc_t | type_derived |
| EVENT_TYPE | type_derived |
| IEEE_CLASS_TYPE | type_derived |
| IEEE_FEATURES_TYPE | type_derived |
| IEEE_FLAG_TYPE | type_derived |
| IEEE_MODES_TYPE | type_derived |
| IEEE_ROUND_TYPE | type_derived |
| IEEE_STATUS_TYPE | type_derived |
| LOCK_TYPE | type_derived |
| TEAM_TYPE | type_derived |