diff --git a/y2024_bot3/www/constants.ts b/y2024_bot3/www/constants.ts
new file mode 100644
index 0000000..97d6e28
--- /dev/null
+++ b/y2024_bot3/www/constants.ts
@@ -0,0 +1,8 @@
+// Conversion constants to meters
+export const IN_TO_M = 0.0254;
+export const FT_TO_M = 0.3048;
+// Dimensions of the field in meters
+// Numbers are slightly hand-tuned to match the PNG that we are using.
+export const FIELD_WIDTH = 26 * FT_TO_M + 11.25 * IN_TO_M;
+export const FIELD_LENGTH = 54 * FT_TO_M + 3.25 * IN_TO_M;
+