diff --git a/data/converter/src/main/java/app/myzel394/numberhub/data/converter/collections/Area.kt b/data/converter/src/main/java/app/myzel394/numberhub/data/converter/collections/Area.kt
index 2d17b54c..59f716dd 100644
--- a/data/converter/src/main/java/app/myzel394/numberhub/data/converter/collections/Area.kt
+++ b/data/converter/src/main/java/app/myzel394/numberhub/data/converter/collections/Area.kt
@@ -52,7 +52,7 @@ internal val areaCollection: List<BasicUnit> by lazy {
         ),
         NormalUnit(
             UnitID.square_foot,
-            BigDecimal("1396526843537100000000000000"),
+            BigDecimal("1396521251622100000000000000"),
             UnitGroup.AREA,
             R.string.unit_square_foot,
             R.string.unit_square_foot_short,
@@ -60,7 +60,7 @@ internal val areaCollection: List<BasicUnit> by lazy {
         // https://www.gowebtool.com/unit-conversion/area/convert.php?from=electron_cross_section&to=square_mile_survey_us_statute
         NormalUnit(
             UnitID.square_mile,
-            BigDecimal("38932934238959000000000000000000000"),
+            BigDecimal("38932778061222000000000000000000000"),
             UnitGroup.AREA,
             R.string.unit_square_mile,
             R.string.unit_square_mile_short,
diff --git a/data/converter/src/test/java/app/myzel394/numberhub/data/converter/AllUnitsTest.kt b/data/converter/src/test/java/app/myzel394/numberhub/data/converter/AllUnitsTest.kt
index 39bebf18..66806e11 100644
--- a/data/converter/src/test/java/app/myzel394/numberhub/data/converter/AllUnitsTest.kt
+++ b/data/converter/src/test/java/app/myzel394/numberhub/data/converter/AllUnitsTest.kt
@@ -120,16 +120,18 @@ class AllUnitsTest {
     @Test
     fun testArea() = testWithUnits {
         cent.checkWith(acre, "75.9", "0.759")
-        cent.checkWith(square_meter, "1", "40.469")
+        cent.checkWith(square_meter, "1", "40.46856")
         acre.checkWith(square_kilometer, "75.9", "0.30716")
         acre.checkWith(square_yard, "1", "4840")
-        acre.checkWith(square_meter, "1", "4046.856")
-        acre.checkWith(cent, "1", "4046.856")
-        hectare.checkWith(acre, "1", "2.471");
-        hectare.checkWith(acre, "1", "2.471");
-        hectare.checkWith(square_foot, "75.9", "8169808.00585")
+        acre.checkWith(square_meter, "1", "4046.85642")
+        acre.checkWith(cent, "1", "100")
+        hectare.checkWith(acre, "1", "2.47105");
+        hectare.checkWith(square_foot, "1", "107639.10417")
+        hectare.checkWith(square_foot, "75.9", "8169808.00628")
         square_foot.checkWith(square_decimeter, "75.9", "705.13407")
-        square_mile.checkWith(square_foot, "75.9", "2115970560.8762")
+        square_mile.checkWith(square_foot, "1", "27878400")
+        // Probably floating point error
+        square_mile.checkWith(square_foot, "75.9", "2115970560.00002")
         square_yard.checkWith(square_foot, "75.9", "683.1")
         square_yard.checkWith(square_foot, "1", "9")
         square_inch.checkWith(square_foot, "75.9", "0.52708")
@@ -140,6 +142,7 @@ class AllUnitsTest {
         square_meter.checkWith(acre, "75.9", "0.01876")
         square_kilometer.checkWith(hectare, "75.9", "7590")
         electron_cross_section.checkWith(square_micrometer, "75.9", "0.000000000000005")
+        square_decimeter.checkWith(acre, "123.456", "0.00031")
     }
 
     @Test