diff --git a/tools/decimal_to_binary.py b/tools/decimal_to_binary.py
new file mode 100644
index 0000000..64094ac
--- /dev/null
+++ b/tools/decimal_to_binary.py
@@ -0,0 +1,9 @@
+# tool: decimal_to_binary
+# description: Converts a decimal integer to its binary string representation
+# author: @Ayush-0918
+# example: decimal_to_binary "10" -> "1010"
+
+
+def run(*args) -> str:
+    n = int(args[0])
+    return bin(n)[2:]