diff --git a/docs/en/sql-reference/functions/geo/h3.md b/docs/en/sql-reference/functions/geo/h3.md
index 896b0226259..e8f91a0cbbb 100644
--- a/docs/en/sql-reference/functions/geo/h3.md
+++ b/docs/en/sql-reference/functions/geo/h3.md
@@ -986,4 +986,40 @@ Result:
 └────────────────────┘
 ```
 
+## h3ExactEdgeLengthRads {#h3exactedgelengthrads}
+
+Returns the exact edge length of the unidirectional edge represented by the input h3 index in radians.
+
+**Syntax**
+
+``` sql
+h3ExactEdgeLengthRads(index)
+```
+
+**Parameter**
+
+-   `index` — Hexagon index number. Type: [UInt64](../../../sql-reference/data-types/int-uint.md).
+
+**Returned value**
+
+-  Edge length in radians.
+
+Type: [Float64](../../../sql-reference/data-types/float.md).
+
+**Example**
+
+Query:
+
+``` sql
+SELECT h3ExactEdgeLengthRads(1310277011704381439) AS exactEdgeLengthRads;;
+```
+
+Result:
+
+``` text
+┌──exactEdgeLengthRads─┐
+│ 0.030677980118976447 │
+└──────────────────────┘
+```
+
 [Original article](https://clickhouse.com/docs/en/sql-reference/functions/geo/h3) <!--hide-->