diff --git a/contrib/remind-conf-mode/remind-conf-mode.el b/contrib/remind-conf-mode/remind-conf-mode.el
index d8db0103..8ca010d1 100644
--- a/contrib/remind-conf-mode/remind-conf-mode.el
+++ b/contrib/remind-conf-mode/remind-conf-mode.el
@@ -169,7 +169,7 @@
          "baseyr" "catch" "catcherr" "char" "choose" "codepoint" "coerce" "columns" "const" "current" "date"
          "datepart" "datetime" "dawn" "day" "daysinmon" "defined" "dosubst"
          "dusk" "easterdate" "escape" "eval" "evaltrig" "filedate" "filedatetime"
-         "filedir" "filename" "getenv" "hebdate" "hebday" "hebmon" "hebyear"
+         "filedir" "filename" "getenv" "hebdate" "hebday" "hebmon" "hebyear" "hex"
          "hour" "htmlescape" "htmlstriptags" "iif" "index" "isany" "isconst" "isdst"
          "isleap" "isomitted" "language" "localtoutc" "lower" "max"
          "mbasc" "mbindex" "mbstrlen" "mbsubstr" "min"
diff --git a/man/remind.1.in b/man/remind.1.in
index 33a9276d..fd8e97c6 100644
--- a/man/remind.1.in
+++ b/man/remind.1.in
@@ -2605,7 +2605,7 @@ as being the combination of \fBDATE\fR and \fBTIME\fR parts.
 The following examples illustrate constants in \fBRemind\fR expressions:
 .TP
 .B INT constants
-12, 36, \-10, 0, 1209
+12, 36, \-10, 0, 1209, 0x1F, 0xfe00 (the last two demonstrate the use of hexadecimal constants)
 .TP
 .B STRING constants
 "Hello there", "This is a test", "\\nHello\\tThere", ""
@@ -4055,6 +4055,11 @@ Support for Hebrew dates - see the section "THE HEBREW CALENDAR"
 .B hebyear(dq_date)
 Support for Hebrew dates - see the section "THE HEBREW CALENDAR"
 .TP
+.B hex(i_n)
+Returns a STRING that is the hexadecimal representation of \fIn\fR.
+There is no "0x" prefix and any letters in the returned value
+are uppper-case.
+.TP
 .B hour(tq_time)
 Returns the hour component of \fItime\fR.
 .TP
diff --git a/src/funcs.c b/src/funcs.c
index 7e8b3f53..a1548ab3 100644
--- a/src/funcs.c
+++ b/src/funcs.c
@@ -113,6 +113,7 @@ static int FHebdate        (func_info *);
 static int FHebday         (func_info *);
 static int FHebmon         (func_info *);
 static int FHebyear        (func_info *);
+static int FHex            (func_info *);
 static int FHour           (func_info *);
 static int FHtmlEscape     (func_info *);
 static int FHtmlStriptags  (func_info *);
@@ -297,6 +298,7 @@ BuiltinFunc Func[] = {
     {   "hebday",       1,      1,      0,          FHebday, NULL },
     {   "hebmon",       1,      1,      0,          FHebmon, NULL },
     {   "hebyear",      1,      1,      0,          FHebyear, NULL },
+    {   "hex",          1,      1,      1,          FHex, NULL },
     {   "hour",         1,      1,      1,          FHour, NULL },
     {   "htmlescape",   1,      1,      1,          FHtmlEscape, NULL },
     {   "htmlstriptags",1,      1,      1,          FHtmlStriptags, NULL },
@@ -734,6 +736,20 @@ static int FAsc(func_info *info)
     return OK;
 }
 
+/***************************************************************/
+/*                                                             */
+/*  FHex - return hexadecimal representation of an integer     */
+/*                                                             */
+/***************************************************************/
+static int FHex(func_info *info)
+{
+    char buf[64];
+
+    ASSERT_TYPE(0, INT_TYPE);
+    snprintf(buf, sizeof(buf), "%X", (unsigned int) ARGV(0));
+    return RetStrVal(buf, info);
+}
+
 /***************************************************************/
 /*                                                             */
 /*  FCodepoint - wide-character codepoint of start of str      */
diff --git a/tests/test-rem b/tests/test-rem
index be2adbfc..a55e0441 100644
--- a/tests/test-rem
+++ b/tests/test-rem
@@ -813,6 +813,17 @@ REM MSG fib(30) = [fib(30)]
 
 EOF
 
+# Test hex constants
+../src/remind -dh --flush -q - 2025-01-01 <<'EOF' >> ../tests/test.out 2>&1
+BANNER %
+SET $AddBlankLines 0
+set a 0xfe + 0xef
+rem msg a = [a]; hex(a) = [hex(a)]
+rem msg hex(-1) = [hex(-1)]
+set a 0x7fff
+rem msg a = [a]; hex(a) = [hex(a)]
+EOF
+
 cmp -s ../tests/test.out ../tests/test.cmp
 if [ "$?" = "0" ]; then
    echo "Remind:  Acceptance test PASSED"
diff --git a/tests/test.cmp b/tests/test.cmp
index 6f9ec75a..a8519ec1 100644
--- a/tests/test.cmp
+++ b/tests/test.cmp
@@ -24635,6 +24635,7 @@ hebdate
 hebday
 hebmon
 hebyear
+hex
 hour
 htmlescape
 htmlstriptags
@@ -39862,3 +39863,28 @@ Expression nodes high-water: 16
      Parse level high-water: 25
 Max expr node evaluations per line: 1000000
 Total expression node evaluations:  3999940
+a = 493; hex(a) = 1ED
+hex(-1) = FFFFFFFF
+a = 32767; hex(a) = 7FFF
+Variable hash table statistics:
+  Entries: 1; Buckets: 7; Non-empty Buckets: 1
+  Maxlen: 1; Minlen: 0; Avglen: 0.143; Stddev: 0.350; Avg nonempty len: 1.000
+  Growths: 0; Shrinks: 0
+Function hash table statistics:
+  Entries: 0; Buckets: 7; Non-empty Buckets: 0
+  Maxlen: 0; Minlen: 0; Avglen: 0.000; Stddev: 0.000; Avg nonempty len: 0.000
+  Growths: 0; Shrinks: 0
+Dedupe hash table statistics:
+  Entries: 0; Buckets: 7; Non-empty Buckets: 0
+  Maxlen: 0; Minlen: 0; Avglen: 0.000; Stddev: 0.000; Avg nonempty len: 0.000
+  Growths: 0; Shrinks: 0
+Translation hash table statistics:
+  Entries: 1; Buckets: 7; Non-empty Buckets: 1
+  Maxlen: 1; Minlen: 0; Avglen: 0.143; Stddev: 0.350; Avg nonempty len: 1.000
+  Growths: 0; Shrinks: 0
+ Expression nodes allocated: 256
+Expression nodes high-water: 3
+    Expression nodes leaked: 0
+     Parse level high-water: 17
+Max expr node evaluations per line: 3
+Total expression node evaluations:  13