diff --git a/DysonNetwork.Drive/Billing/UsageController.cs b/DysonNetwork.Drive/Billing/UsageController.cs
index 4f043e7..e270118 100644
--- a/DysonNetwork.Drive/Billing/UsageController.cs
+++ b/DysonNetwork.Drive/Billing/UsageController.cs
@@ -1,6 +1,25 @@
+using Microsoft.AspNetCore.Mvc;
+
 namespace DysonNetwork.Drive.Billing;
 
-public class UsageController
+[ApiController]
+[Route("api/billing/usage")]
+public class UsageController(UsageService usageService) : ControllerBase
 {
-    
-}
\ No newline at end of file
+    [HttpGet]
+    public async Task<ActionResult<TotalUsageDetails>> GetTotalUsage()
+    {
+        return await usageService.GetTotalUsage();
+    }
+
+    [HttpGet("{poolId:guid}")]
+    public async Task<ActionResult<UsageDetails>> GetPoolUsage(Guid poolId)
+    {
+        var usageDetails = await usageService.GetPoolUsage(poolId);
+        if (usageDetails == null)
+        {
+            return NotFound();
+        }
+        return usageDetails;
+    }
+}
diff --git a/DysonNetwork.Drive/Billing/UsageService.cs b/DysonNetwork.Drive/Billing/UsageService.cs
index 87ac4b1..9e2a5a3 100644
--- a/DysonNetwork.Drive/Billing/UsageService.cs
+++ b/DysonNetwork.Drive/Billing/UsageService.cs
@@ -1,6 +1,99 @@
+using Microsoft.EntityFrameworkCore;
+
 namespace DysonNetwork.Drive.Billing;
 
-public class UsageService
+public class UsageDetails
 {
-    
+    public required Guid PoolId { get; set; }
+    public required string PoolName { get; set; }
+    public required long UsageBytes { get; set; }
+    public required double Cost { get; set; }
+    public required long FileCount { get; set; }
+}
+
+public class UsageDetailsWithPercentage : UsageDetails
+{
+    public required double Percentage { get; set; }
+}
+
+public class TotalUsageDetails
+{
+    public required List<UsageDetailsWithPercentage> PoolUsages { get; set; }
+    public required long TotalUsageBytes { get; set; }
+    public required double TotalCost { get; set; }
+    public required long TotalFileCount { get; set; }
+}
+
+public class UsageService(AppDatabase db)
+{
+    public async Task<TotalUsageDetails> GetTotalUsage()
+    {
+        var poolUsages = await db.Pools
+            .Select(p => new UsageDetails
+            {
+                PoolId = p.Id,
+                PoolName = p.Name,
+                UsageBytes = db.Files
+                    .Where(f => f.PoolId == p.Id)
+                    .Sum(f => f.Size),
+                Cost = db.Files
+                           .Where(f => f.PoolId == p.Id)
+                           .Sum(f => f.Size) / 1024.0 / 1024.0 *
+                       (p.BillingConfig.CostMultiplier ?? 1.0),
+                FileCount = db.Files
+                    .Count(f => f.PoolId == p.Id)
+            })
+            .ToListAsync();
+
+        var totalUsage = poolUsages.Sum(p => p.UsageBytes);
+        var totalCost = poolUsages.Sum(p => p.Cost);
+        var totalFileCount = poolUsages.Sum(p => p.FileCount);
+
+        var poolUsagesWithPercentage = poolUsages.Select(p => new UsageDetailsWithPercentage
+        {
+            PoolId = p.PoolId,
+            PoolName = p.PoolName,
+            UsageBytes = p.UsageBytes,
+            Cost = p.Cost,
+            FileCount = p.FileCount,
+            Percentage = totalUsage > 0 ? (double)p.UsageBytes / totalUsage : 0
+        }).ToList();
+
+        return new TotalUsageDetails
+        {
+            PoolUsages = poolUsagesWithPercentage,
+            TotalUsageBytes = totalUsage,
+            TotalCost = totalCost,
+            TotalFileCount = totalFileCount
+        };
+    }
+
+    public async Task<UsageDetails?> GetPoolUsage(Guid poolId)
+    {
+        var pool = await db.Pools.FindAsync(poolId);
+        if (pool == null)
+        {
+            return null;
+        }
+
+        var usageBytes = await db.Files
+            .Where(f => f.PoolId == poolId)
+            .SumAsync(f => f.Size);
+
+        var fileCount = await db.Files
+            .Where(f => f.PoolId == poolId)
+            .CountAsync();
+
+        var cost = usageBytes / 1024.0 / 1024.0 *
+                   (pool.BillingConfig.CostMultiplier ?? 1.0);
+
+        return new UsageDetails
+        {
+            PoolId = pool.Id,
+            PoolName = pool.Name,
+            UsageBytes = usageBytes,
+            Cost = cost,
+            FileCount = fileCount
+        };
+    }
 }
\ No newline at end of file
diff --git a/DysonNetwork.Drive/Client/bun.lock b/DysonNetwork.Drive/Client/bun.lock
index ff5412a..528c761 100644
--- a/DysonNetwork.Drive/Client/bun.lock
+++ b/DysonNetwork.Drive/Client/bun.lock
@@ -11,10 +11,12 @@
         "@vueuse/core": "^13.5.0",
         "aspnet-prerendering": "^3.0.1",
         "cfturnstile-vue3": "^2.0.0",
+        "chart.js": "^4.5.0",
         "pinia": "^3.0.3",
         "tailwindcss": "^4.1.11",
         "tus-js-client": "^4.3.1",
         "vue": "^3.5.17",
+        "vue-chartjs": "^5.3.2",
         "vue-router": "^4.5.1",
       },
       "devDependencies": {
@@ -162,6 +164,8 @@
 
     "@juggle/resize-observer": ["@juggle/resize-observer@3.4.0", "", {}, "sha512-dfLbk+PwWvFzSxwk3n5ySL0hfBog779o8h68wK/7/APo/7cgyWp5jcXockbxdk5kFRkbeXWm4Fbi9FrdN381sA=="],
 
+    "@kurkle/color": ["@kurkle/color@0.3.4", "", {}, "sha512-M5UknZPHRu3DEDWoipU6sE8PdkZ6Z/S+v4dD+Ke8IaNlpdSQah50lz1KtcFBa2vsdOnwbbnxJwVM4wty6udA5w=="],
+
     "@napi-rs/wasm-runtime": ["@napi-rs/wasm-runtime@0.2.12", "", { "dependencies": { "@emnapi/core": "^1.4.3", "@emnapi/runtime": "^1.4.3", "@tybys/wasm-util": "^0.10.0" } }, "sha512-ZVWUcfwY4E/yPitQJl481FjFo3K22D6qF0DuFH6Y/nbnE11GY5uguDxZMGXPQ8WQ0128MXQD7TnfHyK4oWoIJQ=="],
 
     "@nodelib/fs.scandir": ["@nodelib/fs.scandir@2.1.5", "", { "dependencies": { "@nodelib/fs.stat": "2.0.5", "run-parallel": "^1.1.9" } }, "sha512-vq24Bq3ym5HEQm2NKCr3yXDwjc7vTsEThRDnkp2DK9p1uqLR+DHurm/NOTo0KG7HYHU7eppKZj3MyqYuMBf62g=="],
@@ -400,6 +404,8 @@
 
     "chalk": ["chalk@4.1.2", "", { "dependencies": { "ansi-styles": "^4.1.0", "supports-color": "^7.1.0" } }, "sha512-oKnbhFyRIXpUuez8iBMmyEa4nbj4IOQyuhc/wy9kY7/WVPcwIO9VA668Pu8RkO7+0G76SLROeyw9CpQ061i4mA=="],
 
+    "chart.js": ["chart.js@4.5.0", "", { "dependencies": { "@kurkle/color": "^0.3.0" } }, "sha512-aYeC/jDgSEx8SHWZvANYMioYMZ2KX02W6f6uVfyteuCGcadDLcYVHdfdygsTQkQ4TKn5lghoojAsPj5pu0SnvQ=="],
+
     "chownr": ["chownr@3.0.0", "", {}, "sha512-+IxzY9BZOQd/XuYPRmrvEVjF/nqj5kgT4kEq7VofrDoM1MxoRjEWkrCC3EtLi59TVawxTAn+orJwFQcrqEN1+g=="],
 
     "color-convert": ["color-convert@2.0.1", "", { "dependencies": { "color-name": "~1.1.4" } }, "sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ=="],
@@ -854,6 +860,8 @@
 
     "vue": ["vue@3.5.17", "", { "dependencies": { "@vue/compiler-dom": "3.5.17", "@vue/compiler-sfc": "3.5.17", "@vue/runtime-dom": "3.5.17", "@vue/server-renderer": "3.5.17", "@vue/shared": "3.5.17" }, "peerDependencies": { "typescript": "*" }, "optionalPeers": ["typescript"] }, "sha512-LbHV3xPN9BeljML+Xctq4lbz2lVHCR6DtbpTf5XIO6gugpXUN49j2QQPcMj086r9+AkJ0FfUT8xjulKKBkkr9g=="],
 
+    "vue-chartjs": ["vue-chartjs@5.3.2", "", { "peerDependencies": { "chart.js": "^4.1.1", "vue": "^3.0.0-0 || ^2.7.0" } }, "sha512-NrkbRRoYshbXbWqJkTN6InoDVwVb90C0R7eAVgMWcB9dPikbruaOoTFjFYHE/+tNPdIe6qdLCDjfjPHQ0fw4jw=="],
+
     "vue-eslint-parser": ["vue-eslint-parser@10.2.0", "", { "dependencies": { "debug": "^4.4.0", "eslint-scope": "^8.2.0", "eslint-visitor-keys": "^4.2.0", "espree": "^10.3.0", "esquery": "^1.6.0", "semver": "^7.6.3" }, "peerDependencies": { "eslint": "^8.57.0 || ^9.0.0" } }, "sha512-CydUvFOQKD928UzZhTp4pr2vWz1L+H99t7Pkln2QSPdvmURT0MoC4wUccfCnuEaihNsu9aYYyk+bep8rlfkUXw=="],
 
     "vue-router": ["vue-router@4.5.1", "", { "dependencies": { "@vue/devtools-api": "^6.6.4" }, "peerDependencies": { "vue": "^3.2.0" } }, "sha512-ogAF3P97NPm8fJsE4by9dwSYtDwXIY1nFY9T6DyQnGHd1E2Da94w9JIolpe42LJGIl0DwOHBi8TcRPlPGwbTtw=="],
diff --git a/DysonNetwork.Drive/Client/package.json b/DysonNetwork.Drive/Client/package.json
index a67af57..dbb65f2 100644
--- a/DysonNetwork.Drive/Client/package.json
+++ b/DysonNetwork.Drive/Client/package.json
@@ -22,10 +22,12 @@
     "@vueuse/core": "^13.5.0",
     "aspnet-prerendering": "^3.0.1",
     "cfturnstile-vue3": "^2.0.0",
+    "chart.js": "^4.5.0",
     "pinia": "^3.0.3",
     "tailwindcss": "^4.1.11",
     "tus-js-client": "^4.3.1",
     "vue": "^3.5.17",
+    "vue-chartjs": "^5.3.2",
     "vue-router": "^4.5.1"
   },
   "devDependencies": {
diff --git a/DysonNetwork.Drive/Client/src/views/dashboard/usage.vue b/DysonNetwork.Drive/Client/src/views/dashboard/usage.vue
index 34f5c8f..d4b136e 100644
--- a/DysonNetwork.Drive/Client/src/views/dashboard/usage.vue
+++ b/DysonNetwork.Drive/Client/src/views/dashboard/usage.vue
@@ -1,9 +1,103 @@
 <template>
-  <section class="h-full"></section>
+  <section class="h-full container-fluid mx-auto py-4 px-5">
+    <div class="h-full flex justify-center items-center" v-if="!usage">
+      <n-spin />
+    </div>
+    <n-grid cols="1 s:2 m:3 l:4" responsive="screen" :x-gap="16" :y-gap="16" v-else>
+      <n-gi>
+        <n-card class="h-stats">
+          <n-statistic label="All Uploads" tabular-nums>
+            <n-number-animation
+              :from="0"
+              :to="toGigabytes(usage.total_usage_bytes)"
+              :precision="3"
+            />
+            <template #suffix>GiB</template>
+          </n-statistic>
+        </n-card>
+      </n-gi>
+      <n-gi>
+        <n-card class="h-stats">
+          <n-statistic label="All Files" tabular-nums>
+            <n-number-animation :from="0" :to="usage.total_file_count" />
+          </n-statistic>
+        </n-card>
+      </n-gi>
+      <n-gi>
+        <n-card class="h-stats">
+          <n-statistic label="Cost" tabular-nums>
+            <n-number-animation :from="0" :to="usage.total_cost" :precision="2" />
+            <template #suffix>NSD</template>
+          </n-statistic>
+        </n-card>
+      </n-gi>
+      <n-gi>
+        <n-card class="h-stats">
+          <n-statistic label="Pools" tabular-nums>
+            <n-number-animation :from="0" :to="usage.pool_usages.length" />
+          </n-statistic>
+        </n-card>
+      </n-gi>
+      <n-gi span="2">
+        <n-card class="ratio-video" title="Pool Usage">
+          <pie
+            :data="chartData"
+            :options="{
+              maintainAspectRatio: false,
+              responsive: true,
+              plugins: { legend: { position: isDesktop ? 'right' : 'bottom' } },
+            }"
+          />
+        </n-card>
+      </n-gi>
+    </n-grid>
+  </section>
 </template>
 
 <script setup lang="ts">
-import { useUserStore } from '@/stores/user';
+import { NSpin, NCard, NStatistic, NGrid, NGi, NNumberAnimation } from 'naive-ui'
+import { Chart as ChartJS, Title, Tooltip, Legend, ArcElement } from 'chart.js'
+import { Pie } from 'vue-chartjs'
+import { computed, onMounted, ref } from 'vue'
+import { breakpointsTailwind, useBreakpoints } from '@vueuse/core'
 
-const userStore = useUserStore()
+ChartJS.register(Title, Tooltip, Legend, ArcElement)
+
+const breakpoints = useBreakpoints(breakpointsTailwind)
+const isDesktop = breakpoints.greaterOrEqual('md')
+
+const chartData = computed(() => ({
+  labels: usage.value.pool_usages.map((pool: any) => pool.pool_name),
+  datasets: [
+    {
+      label: 'Pool Usage',
+      backgroundColor: '#7D80BAFF',
+      data: usage.value.pool_usages.map((pool: any) => pool.usage_bytes),
+    },
+  ]
+}))
+
+const usage = ref<any>()
+async function fetchUsage() {
+  try {
+    const response = await fetch('/api/billing/usage')
+    if (!response.ok) {
+      throw new Error('Network response was not ok')
+    }
+    usage.value = await response.json()
+  } catch (error) {
+    console.error('Failed to fetch usage data:', error)
+  }
+}
+onMounted(() => fetchUsage())
+
+function toGigabytes(bytes: number): number {
+  return bytes / (1024 * 1024 * 1024)
+}
 </script>
+
+<style scoped>
+.h-stats {
+  height: 105px;
+}
+</style>
diff --git a/DysonNetwork.Drive/Startup/ServiceCollectionExtensions.cs b/DysonNetwork.Drive/Startup/ServiceCollectionExtensions.cs
index 0dc0459..4f64952 100644
--- a/DysonNetwork.Drive/Startup/ServiceCollectionExtensions.cs
+++ b/DysonNetwork.Drive/Startup/ServiceCollectionExtensions.cs
@@ -139,6 +139,7 @@ public static class ServiceCollectionExtensions
         services.AddScoped<Storage.FileService>();
         services.AddScoped<Storage.FileReferenceService>();
         services.AddScoped<Billing.UsageService>();
+        services.AddScoped<Billing.UsageService>();
         
         return services;
     }
diff --git a/DysonNetwork.Drive/Storage/FilePool.cs b/DysonNetwork.Drive/Storage/FilePool.cs
index 186553c..1f77fe4 100644
--- a/DysonNetwork.Drive/Storage/FilePool.cs
+++ b/DysonNetwork.Drive/Storage/FilePool.cs
@@ -21,7 +21,7 @@ public class RemoteStorageConfig
 
 public class BillingConfig
 {
-    public double CostMultiplier { get; set; } = 1.0;
+    public double? CostMultiplier { get; set; } = 1.0;
 }
 
 public class PolicyConfig