diff -r 8dc0a00b1db4 -r 107c12c3e49d www/includes/formulas.php
--- a/www/includes/formulas.php	Thu Nov 15 17:17:33 2018 +0100
+++ b/www/includes/formulas.php	Thu Nov 15 22:22:51 2018 +0100
@@ -129,7 +129,7 @@
 /*
  * sugars is the total extract weight of sugars.
  */
-function estimate_og($sugars, $batch_size) {
+function estimate_sg($sugars, $batch_size) {
 	$plato = 100 * $sugars / $batch_size;
 	$sg = plato_to_sg($plato);