diff --git a/backend/assets/functions/functionObject.js b/backend/assets/functions/functionObject.js
index d14d987..fd7d290 100644
--- a/backend/assets/functions/functionObject.js
+++ b/backend/assets/functions/functionObject.js
@@ -5,6 +5,7 @@ const { convertTemperatureOutput }                               = require('./ma
 const { armstrongNumberOutput }                                  = require('./main/armstrongNumber');
 const { weatherRequestOutput }                                   = require('./main/weatherRequest');
 const { convertCurrencyOutput }                                  = require('./main/convertCurrency');
+const { calculateAgeOutput }                                     = require('./main/calculateAge');
 
 const functionObject = {
     randomNumber        : randomNumberOutput,
@@ -14,7 +15,8 @@ const functionObject = {
     convertTemperature  : convertTemperatureOutput,
     armstrongNumber     : armstrongNumberOutput,
     weatherRequest      : weatherRequestOutput,
-    convertCurrency     : convertCurrencyOutput
+    convertCurrency     : convertCurrencyOutput,
+    calculateAge        : calculateAgeOutput
 };
 
 // Choisi la fonction à exécuter
diff --git a/backend/assets/functions/main/calculateAge.js b/backend/assets/functions/main/calculateAge.js
new file mode 100644
index 0000000..af1a729
--- /dev/null
+++ b/backend/assets/functions/main/calculateAge.js
@@ -0,0 +1,43 @@
+const sendResponse       = require('../../utils/sendResponse');
+const moment             = require('moment');
+const { requiredFields } = require('../../config/errors');
+
+function calculateAge(currentDate, { birthDateDay, birthDateMonth, birthDateYear }) {
+    const day   = currentDate.getDate();
+    const month = currentDate.getMonth();
+    const currentDateMoment = moment([currentDate.getFullYear(), month, day]);
+    const birthDateMoment   = moment([birthDateYear, birthDateMonth - 1, birthDateDay]);
+
+    // Calcule l'âge - Moment.js
+    const ageYears = currentDateMoment.diff(birthDateMoment, 'year');
+    birthDateMoment.add(ageYears, 'years');
+    const ageMonths = currentDateMoment.diff(birthDateMoment, 'months');
+    birthDateMoment.add(ageMonths, 'months');
+    const ageDays = currentDateMoment.diff(birthDateMoment, 'days');
+
+    const isBirthday = (birthDateDay === day && birthDateMonth === (month + 1)); 
+    return { ageYears, ageMonths, ageDays, isBirthday };
+}
+
+/* OUTPUTS */
+exports.calculateAgeOutput = (res, argsObject) => {
+    let { birthDateDay, birthDateMonth, birthDateYear } = argsObject;
+    birthDateDay   = parseInt(birthDateDay);
+    birthDateMonth = parseInt(birthDateMonth);
+    birthDateYear  = parseInt(birthDateYear);
+    
+    // S'il n'y a pas les champs obligatoire
+    if (!(birthDateDay && birthDateMonth && birthDateYear)) {
+        return sendResponse(res, requiredFields);
+    }
+    
+    // Si ce n'est pas une date valide
+    const currentDate = new Date();
+    const birthDate   = new Date(birthDateYear, birthDateMonth - 1, birthDateDay);
+    if (!(currentDate > birthDate)) {
+        return sendResponse(res, { result: "Veuillez rentré une date valide...", httpStatus: 400 });
+    }
+
+    const result = calculateAge(currentDate, { birthDateYear, birthDateMonth, birthDateDay });
+    return sendResponse(res, { result }, true);
+}
\ No newline at end of file
diff --git a/backend/package-lock.json b/backend/package-lock.json
index c94caa5..ebed359 100644
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@@ -879,6 +879,11 @@
       "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==",
       "dev": true
     },
+    "moment": {
+      "version": "2.24.0",
+      "resolved": "https://registry.npmjs.org/moment/-/moment-2.24.0.tgz",
+      "integrity": "sha512-bV7f+6l2QigeBBZSM/6yTNq4P2fNpSWj/0e7jQcy87A8e7o2nAfP/34/2ky5Vw4B9S446EtIhodAzkFCcR4dQg=="
+    },
     "morgan": {
       "version": "1.9.1",
       "resolved": "https://registry.npmjs.org/morgan/-/morgan-1.9.1.tgz",
diff --git a/backend/package.json b/backend/package.json
index ad19a2b..8317cec 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -14,6 +14,7 @@
     "cors": "^2.8.5",
     "express": "^4.17.1",
     "helmet": "^3.21.3",
+    "moment": "^2.24.0",
     "smart-request-balancer": "^2.1.1"
   },
   "devDependencies": {