diff --git a/docs/references/functions.md b/docs/references/functions.md
index eeaf65b..6bcc076 100644
--- a/docs/references/functions.md
+++ b/docs/references/functions.md
@@ -31,13 +31,14 @@ Available through the _ExpressionConfiguration.StandardFunctionsDictionary_ cons
 
 ### String Functions
 
-| Name                               | Description                                                           |
-|------------------------------------|-----------------------------------------------------------------------|
-| STR_CONTAINS(string, substring)    | Returns true if the string contains the substring (case-insensitive)  |
-| STR_ENDS_WITH(string, substring)   | Returns true if the string ends with the substring (case-sensitive)   |
-| STR_LOWER(value)                   | Converts the given value to lower case                                |
-| STR_STARTS_WITH(string, substring) | Returns true if the string starts with the substring (case-sensitive) |
-| STR_UPPER(value)                   | Converts the given value to upper case                                |
+| Name                                | Description                                                                |
+|-------------------------------------|----------------------------------------------------------------------------|
+| STR_CONTAINS(string, substring)     | Returns true if the string contains the substring (case-insensitive)       |
+| STR_ENDS_WITH(string, substring)    | Returns true if the string ends with the substring (case-sensitive)        |
+| STR_FORMAT(format [,argument, ...]) | Returns a formatted string using the specified format string and arguments |
+| STR_LOWER(value)                    | Converts the given value to lower case                                     |
+| STR_STARTS_WITH(string, substring)  | Returns true if the string starts with the substring (case-sensitive)      |
+| STR_UPPER(value)                    | Converts the given value to upper case                                     |
 
 ### Trigonometric Functions
 
diff --git a/src/main/java/com/ezylang/evalex/config/ExpressionConfiguration.java b/src/main/java/com/ezylang/evalex/config/ExpressionConfiguration.java
index 923f77d..4557e0a 100644
--- a/src/main/java/com/ezylang/evalex/config/ExpressionConfiguration.java
+++ b/src/main/java/com/ezylang/evalex/config/ExpressionConfiguration.java
@@ -181,6 +181,7 @@ public class ExpressionConfiguration {
           // string functions
           Map.entry("STR_CONTAINS", new StringContains()),
           Map.entry("STR_ENDS_WITH", new StringEndsWithFunction()),
+          Map.entry("STR_FORMAT", new StringFormatFunction()),
           Map.entry("STR_LOWER", new StringLowerFunction()),
           Map.entry("STR_STARTS_WITH", new StringStartsWithFunction()),
           Map.entry("STR_UPPER", new StringUpperFunction()),
diff --git a/src/main/java/com/ezylang/evalex/functions/string/StringFormatFunction.java b/src/main/java/com/ezylang/evalex/functions/string/StringFormatFunction.java
new file mode 100644
index 0000000..0d22146
--- /dev/null
+++ b/src/main/java/com/ezylang/evalex/functions/string/StringFormatFunction.java
@@ -0,0 +1,60 @@
+/*
+  Copyright 2012-2024 Udo Klimaschewski
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+*/
+package com.ezylang.evalex.functions.string;
+
+import com.ezylang.evalex.Expression;
+import com.ezylang.evalex.data.EvaluationValue;
+import com.ezylang.evalex.functions.AbstractFunction;
+import com.ezylang.evalex.functions.FunctionParameter;
+import com.ezylang.evalex.parser.Token;
+import java.util.stream.IntStream;
+
+/**
+ * Returns a formatted string using the specified format string and arguments.
+ *
+ * <p>For example:
+ *
+ * <blockquote>
+ *
+ * {@code STR_FORMAT("Welcome to %s!", "EvalEx")}
+ *
+ * </blockquote>
+ *
+ * <p>The result is produced using {@link String#format(String, Object...)}.
+ *
+ * @author oswaldobapvicjr
+ */
+@FunctionParameter(name = "format")
+@FunctionParameter(name = "arguments", isVarArg = true)
+public class StringFormatFunction extends AbstractFunction {
+  @Override
+  public EvaluationValue evaluate(
+      Expression expression, Token functionToken, EvaluationValue... parameterValues) {
+    String format = parameterValues[0].getStringValue();
+    Object[] arguments = getArguments(parameterValues);
+    return expression.convertValue(String.format(format, arguments));
+  }
+
+  private Object[] getArguments(EvaluationValue[] parameterValues) {
+    if (parameterValues.length > 1) {
+      return IntStream.range(1, parameterValues.length)
+          .mapToObj(i -> parameterValues[i])
+          .map(EvaluationValue::getValue)
+          .toArray();
+    }
+    return new Object[0];
+  }
+}
diff --git a/src/test/java/com/ezylang/evalex/functions/string/StringFunctionsTest.java b/src/test/java/com/ezylang/evalex/functions/string/StringFunctionsTest.java
index 63a97e3..793bd87 100644
--- a/src/test/java/com/ezylang/evalex/functions/string/StringFunctionsTest.java
+++ b/src/test/java/com/ezylang/evalex/functions/string/StringFunctionsTest.java
@@ -18,11 +18,16 @@ package com.ezylang.evalex.functions.string;
 import com.ezylang.evalex.BaseEvaluationTest;
 import com.ezylang.evalex.EvaluationException;
 import com.ezylang.evalex.parser.ParseException;
+import java.util.Locale;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.CsvSource;
 
 class StringFunctionsTest extends BaseEvaluationTest {
 
+  static {
+    Locale.setDefault(Locale.ENGLISH);
+  }
+
   @ParameterizedTest
   @CsvSource(
       delimiter = ':',
@@ -103,4 +108,19 @@ class StringFunctionsTest extends BaseEvaluationTest {
       throws EvaluationException, ParseException {
     assertExpressionHasExpectedResult(expression, expectedResult);
   }
+
+  @ParameterizedTest
+  @CsvSource(
+      delimiter = ':',
+      value = {
+        "STR_FORMAT(\"Welcome to %s!\", \"EvalEx\") : Welcome to EvalEx!",
+        "STR_FORMAT(\"%s is %.2f\", \"Result\", 11.1) : Result is 11.10",
+        "STR_FORMAT(\"%1$s_%3$s_%2$s\", \"foo\", \"baz\", \"bar\") : foo_bar_baz",
+        "STR_FORMAT(\"%03.0f\", 1) : 001",
+        "STR_FORMAT(\"No format\") : No format",
+      })
+  void testFormat(String expression, String expectedResult)
+      throws EvaluationException, ParseException {
+    assertExpressionHasExpectedResult(expression, expectedResult);
+  }
 }