diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0e83884eb49cafbfdf9d0e7a87092106328d11c7..0465031b94a154bd5ff823d4792f53ea838555b9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,7 @@ This changelog aims to follow the guiding principles of
 - MinMax enabled in OpenCV HAL, float version added.
 - Resize 4x4 for float.
 - Resize 0.5x0.5 for uint8_t.
+- Conversion from float to (u)int8_t and vice versa.
 
 ### Fixed
 
diff --git a/doc/functionality.md b/doc/functionality.md
index 483ddb29cd3bc2641136db8fe1719ac37c6cba4c..57541bf422491bc65eabcc70708ca6942e6d37cb 100644
--- a/doc/functionality.md
+++ b/doc/functionality.md
@@ -49,6 +49,13 @@ See `doc/opencv.md` for details of the functionality available in OpenCV.
 | BGR-YUV   |  x  |
 | BGRA-YUV  |  x  |
 
+## Data type conversions
+|            | u8  | s8  | f32 |
+|------------|-----|-----|-----|
+| To float32 |  x  |  x  |     |
+| To uint8   |     |     |  x  |
+| To int8    |     |     |  x  |
+
 ## Aggregate operations
 |                 | s8  | u8  | s16 | u16 | s32 | u32 | s64 | f32 |
 |-----------------|-----|-----|-----|-----|-----|-----|-----|-----|