diff --git a/System-Tools.md b/System-Tools.md
index 6a484d24f..acdfe5753 100644
--- a/System-Tools.md
+++ b/System-Tools.md
@@ -284,6 +284,7 @@
 * [LittleBigMouse](https://github.com/mgth/LittleBigMouse) - DPI Test
 * [Scalizer](https://github.com/wonmor/Scalizer-Windows) - Auto DPI Scaling / [YouTube](https://youtu.be/f_3XWlmyat4)
 * [ICM](https://rentry.co/ICM) or [ICC Profiles](https://tftcentral.co.uk/articles/icc_profiles) - ICC Profiles and Monitor Calibration
+* [Display Calc](https://www.tools.rodrigopolo.com/display_calc/) - Display Distance / Dimension Calculator
 * [Multi-Monitor Calculator](https://multimonitorcalculator.com/) - Dual-Monitor Setup Planning / Tests
 * [Wide Gamut](https://www.wide-gamut.com/) - Color Compatibility Test
 * [WhiteScreen](https://www.whitescreen.online/) - Screen Color Test