Fix force conversion rates

Common/UnitDefinitions/Force.json

@@ -18,6 +18,8 @@
       },
       "FromUnitToBaseFunc": "{x} / 1e5",
       "FromBaseToUnitFunc": "{x} * 1e5",
+      "XmlDocSummary": "One dyne is equal to 10 micronewtons, 10e−5 N or to 10 nsn (nanosthenes) in the old metre–tonne–second system of units.",
+      "XmlDocRemarks": "https://en.wikipedia.org/wiki/Dyne#Definition",
       "Localization": [
         {
           "Culture": "en-US",
@@ -32,8 +34,10 @@
     {
       "SingularName": "KilogramForce",
       "PluralName": "KilogramsForce",
-      "FromUnitToBaseFunc": "{x} * 9.80665002864",
-      "FromBaseToUnitFunc": "{x} / 9.80665002864",
+      "FromUnitToBaseFunc": "{x} * 9.80665",
+      "FromBaseToUnitFunc": "{x} / 9.80665",
+      "XmlDocSummary": "The kilogram-force, or kilopond, is equal to the magnitude of the force exerted on one kilogram of mass in a 9.80665 m/s2 gravitational field (standard gravity). Therefore, one kilogram-force is by definition equal to 9.80665 N.",
+      "XmlDocRemarks": "https://en.wikipedia.org/wiki/Kilogram-force",
       "Localization": [
         {
           "Culture": "en-US",
@@ -48,8 +52,10 @@
     {
       "SingularName": "TonneForce",
       "PluralName": "TonnesForce",
-      "FromUnitToBaseFunc": "{x} * 9.80665002864e3",
-      "FromBaseToUnitFunc": "{x} / 9.80665002864e3",
+      "FromUnitToBaseFunc": "{x} * 9.80665e3",
+      "FromBaseToUnitFunc": "{x} / 9.80665e3",
+      "XmlDocSummary": "The tonne-force, metric ton-force, megagram-force, and megapond (Mp) are each 1000 kilograms-force.",
+      "XmlDocRemarks": "https://en.wikipedia.org/wiki/Kilogram-force#Related_units",
       "Localization": [
         {
           "Culture": "en-US",
@@ -71,6 +77,8 @@
       },
       "FromUnitToBaseFunc": "{x}",
       "FromBaseToUnitFunc": "{x}",
+      "XmlDocSummary": "The newton (symbol: N) is the unit of force in the International System of Units (SI). It is defined as 1 kg⋅m/s2, the force which gives a mass of 1 kilogram an acceleration of 1 metre per second per second.",
+      "XmlDocRemarks": "https://en.wikipedia.org/wiki/Newton_(unit)",
       "Prefixes": [ "Micro", "Milli", "Deca", "Kilo", "Mega" ],
       "Localization": [
         {
@@ -86,8 +94,10 @@
     {
       "SingularName": "KiloPond",
       "PluralName": "KiloPonds",
-      "FromUnitToBaseFunc": "{x} * 9.80665002864",
-      "FromBaseToUnitFunc": "{x} / 9.80665002864",
+      "FromUnitToBaseFunc": "{x} * 9.80665",
+      "FromBaseToUnitFunc": "{x} / 9.80665",
+      "XmlDocSummary": "The kilogram-force, or kilopond, is equal to the magnitude of the force exerted on one kilogram of mass in a 9.80665 m/s2 gravitational field (standard gravity). Therefore, one kilogram-force is by definition equal to 9.80665 N.",
+      "XmlDocRemarks": "https://en.wikipedia.org/wiki/Kilogram-force",
       "Localization": [
         {
           "Culture": "en-US",
@@ -107,8 +117,10 @@
         "M": "Pound",
         "T": "Second"
       },
-      "FromUnitToBaseFunc": "{x} * 0.13825502798973041652092282466083",
-      "FromBaseToUnitFunc": "{x} / 0.13825502798973041652092282466083",
+      "FromUnitToBaseFunc": "{x} * 0.138254954376",
+      "FromBaseToUnitFunc": "{x} / 0.138254954376",
+      "XmlDocSummary": "The poundal is defined as the force necessary to accelerate 1 pound-mass at 1 foot per second per second. 1 pdl = 0.138254954376 N exactly.",
+      "XmlDocRemarks": "https://en.wikipedia.org/wiki/Poundal",
       "Localization": [
         {
           "Culture": "en-US",
@@ -123,8 +135,10 @@
     {
       "SingularName": "PoundForce",
       "PluralName": "PoundsForce",
-      "FromUnitToBaseFunc": "{x} * 4.4482216152605095551842641431421",
-      "FromBaseToUnitFunc": "{x} / 4.4482216152605095551842641431421",
+      "FromUnitToBaseFunc": "{x} * 4.4482216152605",
+      "FromBaseToUnitFunc": "{x} / 4.4482216152605",
+      "XmlDocSummary": "The standard values of acceleration of the standard gravitational field (gn) and the international avoirdupois pound (lb) result in a pound-force equal to 4.4482216152605 N.",
+      "XmlDocRemarks": "https://en.wikipedia.org/wiki/Pound_(force)#Definitions",
       "Prefixes": [ "Kilo" ],
       "Localization": [
         {
@@ -142,8 +156,10 @@
     {
       "SingularName": "OunceForce",
       "PluralName": "OunceForce",
-      "FromUnitToBaseFunc": "{x} * 2.780138509537812e-1",
-      "FromBaseToUnitFunc": "{x} / 2.780138509537812e-1",
+      "FromUnitToBaseFunc": "{x} * 0.27801385095378125",
+      "FromBaseToUnitFunc": "{x} / 0.27801385095378125",
+      "XmlDocSummary": "An ounce-force is 1⁄16 of a pound-force, or about 0.2780139 newtons.",
+      "XmlDocRemarks": "https://en.wikipedia.org/wiki/Ounce#Ounce-force",
       "Localization": [
         {
           "Culture": "en-US",

UnitsNet.Tests/CustomCode/ForceTests.cs

@@ -1,4 +1,4 @@
-// Licensed under MIT No Attribution, see LICENSE file at the root.
+// Licensed under MIT No Attribution, see LICENSE file at the root.
 // Copyright 2013 Andreas Gullberg Larsen (andreas.larsen84@gmail.com). Maintained at https://github.com/angularsen/UnitsNet.
 
 using Xunit;
@@ -7,33 +7,36 @@ namespace UnitsNet.Tests
 {
     public class ForceTests : ForceTestsBase
     {
+        private const double StandardGravity = 9.80665;
+        private const double PoundsConversionRate = 4.4482216152605;
+
         protected override bool SupportsSIUnitSystem => true;
         protected override double DecanewtonsInOneNewton => 1E-1;
         protected override double DyneInOneNewton => 1E5;
 
-        protected override double KilogramsForceInOneNewton => 0.101972;
+        protected override double KilogramsForceInOneNewton => 1.0 / StandardGravity;
 
-        protected override double KilopoundsForceInOneNewton => 0.22481e-3;
+        protected override double KilopoundsForceInOneNewton => 1.0 / (PoundsConversionRate * 1_000.0);
         protected override double MeganewtonsInOneNewton => 1E-6;
         protected override double KilonewtonsInOneNewton => 1E-3;
 
-        protected override double KiloPondsInOneNewton => 0.101972;
+        protected override double KiloPondsInOneNewton => 1.0 / StandardGravity;
 
         protected override double NewtonsInOneNewton => 1;
 
         protected override double PoundalsInOneNewton => 7.23301;
 
-        protected override double PoundsForceInOneNewton => 0.22481;
+        protected override double PoundsForceInOneNewton => 1.0 / PoundsConversionRate;
 
-        protected override double TonnesForceInOneNewton => 1.019716212977928e-4;
+        protected override double TonnesForceInOneNewton => 1.0 / (StandardGravity * 1_000.0);
 
         protected override double MillinewtonsInOneNewton => 1.0e3;
 
         protected override double MicronewtonsInOneNewton => 1.0e6;
 
-        protected override double OunceForceInOneNewton => 3.596943089595368;
+        protected override double OunceForceInOneNewton => 1.0 / (PoundsConversionRate / 16.0);
 
-        protected override double ShortTonsForceInOneNewton => 1.12404471549816e-4;
+        protected override double ShortTonsForceInOneNewton => 1.0 / (PoundsConversionRate * 2_000.0);
 
         [Fact]
         public void ForceDividedByAreaEqualsPressure()
@@ -104,5 +107,12 @@ public void ForceDividedByForceChangeRateEqualsDuration()
             Duration duration = Force.FromNewtons(200) / ForceChangeRate.FromNewtonsPerSecond(50);
             Assert.Equal(duration, Duration.FromSeconds(4));
         }
+
+        [Fact]
+        public void KilogramForceDividedByNewtonEqualsStandardGravity()
+        {
+            double duration = Force.FromKilogramsForce(1) / Force.FromNewtons(1);
+            Assert.Equal(StandardGravity, duration);
+        }
     }
 }