diff --git a/README.md b/README.md
index aa15dc1..87000cb 100644
--- a/README.md
+++ b/README.md
@@ -153,6 +153,13 @@ Convert Jalaali calendar date to javascript Date object by giving Jalaali year,
 ```js
 jalaali.jalaaliToDateObject(1400, 4, 30) // new Date(2021, 6, 21)
 ```
+### jalaaliToTimestamp(jy, jm, jd, millisecond = true)
+
+Convert Jalaali calendar date to Timestamp.
+
+```js
+jalaali.jalaaliToTimestamp(1400, 4, 30) // 1626809400000
+```
 
 ## License
 
diff --git a/index.js b/index.js
index 2c06d94..4449cce 100644
--- a/index.js
+++ b/index.js
@@ -13,6 +13,7 @@ module.exports =
   , g2d: g2d
   , d2g: d2g
   , jalaaliToDateObject: jalaaliToDateObject
+  , jalaaliToTimestamp: jalaaliToTimestamp
   }
 
 /*
@@ -314,4 +315,16 @@ function mod(a, b) {
     gregorianCalenderDate.gm - 1, 
     gregorianCalenderDate.gd
   );
+}
+
+/**
+ * Convert Jalaali calendar dates to Timestamp
+ * @param {number} jy jalaali year
+ * @param {number} jm jalaali month
+ * @param {number} jd jalaali day
+ * @param {boolean} [millisecond=true] calculate millisecond
+ * @returns Timestamp
+ */
+function jalaaliToTimestamp(jy, jm, jd, millisecond = true) {
+  return jalaaliToDateObject(jy, jm, jd).getTime() / (millisecond ? 1 : 1000);
 }
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