diff --git a/src/ts/plugins/metrica.ts b/src/ts/plugins/metrica.ts
index 428b43eb..20e522c1 100644
--- a/src/ts/plugins/metrica.ts
+++ b/src/ts/plugins/metrica.ts
@@ -1,15 +1,15 @@
 
-const convertion:[string,string,number][] = [
-    ['kg', 'lbs', 2.20462],
-    ['m', 'ft', 3.28084],
-    ['cm', 'in', 0.393701],
-    ['mm', 'in', 0.0393701],
-    ['km', 'mi', 0.621371],
-    ['killogram', 'pound', 2.20462],
-    ['meter', 'foot', 3.28084],
-    ['centimeter', 'inch', 0.393701],
-    ['millimeter', 'inch', 0.0393701],
-    ['kilometer', 'mile', 0.621371],
+const convertion:[string,string,number, boolean][] = [
+    ['kg', 'lbs', 2.20462, true],
+    ['m', 'ft', 3.28084, true],
+    ['cm', 'inch', 0.393701, false],
+    ['mm', 'inch', 0.0393701, false],
+    ['km', 'mi', 0.621371, true],
+    ['killogram', 'pound', 2.20462, true],
+    ['meter', 'foot', 3.28084, true],
+    ['centimeter', 'inch', 0.393701, true],
+    ['millimeter', 'inch', 0.0393701, true],
+    ['kilometer', 'mile', 0.621371, true],
 ]
 
 export function metricaPlugin(data:string, toSystem:'metrics'|'imperial'){
@@ -20,12 +20,23 @@ export function metricaPlugin(data:string, toSystem:'metrics'|'imperial'){
             [from, to] = [to, from];
             ratio = 1 / ratio;
         }
+        if(!c[i][3]){
+            if(toSystem === 'metrics'){
+                continue;
+            }
+        }
         const reg = new RegExp(`(\\d+(?:\\.\\d+)?)\\s*${from}`, 'g');
         data = data.replace(reg, (_, value) => {
             const result = parseFloat(value) * ratio;
             return `${result.toFixed(2)} ${to}`;
         });
     }
+    //convert height like 5' 11'' to 180 cm
+    const reg = /(\d+)'?\s*(\d+)"?/g;
+    data = data.replace(reg, (_, feet, inch) => {
+        const result = parseFloat(feet) * 30.48 + parseFloat(inch) * 2.54;
+        return `${result.toFixed(2)} cm`;
+    });
     
     return data
 }
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