diff --git a/src/lib/isFloat.js b/src/lib/isFloat.js
index 84bdc782c..3d91b8af6 100644
--- a/src/lib/isFloat.js
+++ b/src/lib/isFloat.js
@@ -9,7 +9,8 @@ export default function isFloat(str, options) {
   if (str === '' || str === '.' || str === ',' || str === '-' || str === '+') {
     return false;
   }
-  const value = parseFloat(str.replace(',', '.'));
+  const decimalSeparator = options.locale ? decimal[options.locale] : '.';
+  const value = parseFloat(str.replace(decimalSeparator, '.'));
   return float.test(str) &&
     (!options.hasOwnProperty('min') || isNullOrUndefined(options.min) || value >= options.min) &&
     (!options.hasOwnProperty('max') || isNullOrUndefined(options.max) || value <= options.max) &&
diff --git a/test/validators.test.js b/test/validators.test.js
index a4c3d7193..323d2fe52 100644
--- a/test/validators.test.js
+++ b/test/validators.test.js
@@ -4857,6 +4857,26 @@ describe('Validators', () => {
         'foo',
       ],
     });
+    test({
+      validator: 'isFloat',
+      args: [{
+        locale: 'ar',
+        min: 3.1,
+        max: 4,
+      }],
+      valid: [
+        '3٫1',
+        '3٫14',
+        '3٫999',
+        '4',
+      ],
+      invalid: [
+        '3٫09',
+        '4٫01',
+        '9٫99',
+        '3',
+      ],
+    });
     test({
       validator: 'isFloat',
       args: [{