diff --git a/oscar/SleepLib/common.cpp b/oscar/SleepLib/common.cpp
index c574b664..73d9cc48 100644
--- a/oscar/SleepLib/common.cpp
+++ b/oscar/SleepLib/common.cpp
@@ -283,7 +283,7 @@ QString weightString(float kg, UnitSystem us)
     if (us == US_Metric) {
         return QString("%1kg").arg(kg, 0, 'f', 2);
     } else if (us == US_English) {
-        int oz = (kg * 1000.0) / (float)ounce_convert;
+        int oz = (kg * 1000.0) * (float)gram_ounce_convert;
         int lb = oz / 16.0;
         oz = oz % 16;
         return QString("%1lb %2oz").arg(lb, 0, 10).arg(oz);
diff --git a/oscar/SleepLib/common.h b/oscar/SleepLib/common.h
index 12d6df1f..ce2433fc 100644
--- a/oscar/SleepLib/common.h
+++ b/oscar/SleepLib/common.h
@@ -83,6 +83,7 @@ bool operator <(const ValueCount &a, const ValueCount &b);
 
 const float ounce_convert = 28.3495231F; // grams
 const float pound_convert = ounce_convert * 16;
+const float gram_ounce_convert = 0.0352754; // ounces in a gram
 
 QString weightString(float kg, UnitSystem us = US_Undefined);