diff --git a/app/src/app/app.module.ts b/app/src/app/app.module.ts
index ca547f3..c0b673b 100644
--- a/app/src/app/app.module.ts
+++ b/app/src/app/app.module.ts
@@ -8,6 +8,7 @@ import { InsightApp } from './app.component';
 import { PagesModule, BlocksPage, BroadcastTxPage, NodeStatusPage, VerifyMessagePage } from '../pages';
 import { BlocksService, StorageService } from '../services';
 import { ApiProvider } from '../providers/api/api';
+import { CurrencyProvider } from '../providers/currency/currency';
 
 @NgModule({
   declarations: [
@@ -33,7 +34,8 @@ import { ApiProvider } from '../providers/api/api';
     StorageService,
     BlocksService,
     {provide: ErrorHandler, useClass: IonicErrorHandler},
-    ApiProvider
+    ApiProvider,
+    CurrencyProvider
   ]
 })
 
diff --git a/app/src/components/head-nav/head-nav.html b/app/src/components/head-nav/head-nav.html
index b441164..e7f73fd 100644
--- a/app/src/components/head-nav/head-nav.html
+++ b/app/src/components/head-nav/head-nav.html
@@ -4,6 +4,9 @@
   </button>
   <ion-title>{{title}}</ion-title>
   <ion-buttons end>
+    <button ion-button (click)="changeCurrency()">
+      <ion-icon name="logo-bitcoin" *ngIf="currency.currencySymbol !== 'USD'"></ion-icon><ion-icon name="logo-usd" *ngIf="currency.currencySymbol === 'USD'"></ion-icon>&nbsp;{{ currency.currencySymbol }}
+    </button>
     <button ion-button icon-only>
       <ion-icon name="search"></ion-icon>
     </button>
diff --git a/app/src/components/head-nav/head-nav.ts b/app/src/components/head-nav/head-nav.ts
index 54fee4c..b38b01c 100644
--- a/app/src/components/head-nav/head-nav.ts
+++ b/app/src/components/head-nav/head-nav.ts
@@ -3,6 +3,8 @@ import { Input } from '@angular/core';
 import { NavController } from 'ionic-angular';
 import { Http } from '@angular/http';
 import { ApiProvider } from '../../providers/api/api';
+import { CurrencyProvider } from '../../providers/currency/currency';
+import { ActionSheetController } from 'ionic-angular';
 
 /**
  * Generated class for the HeadNavComponent component.
@@ -21,7 +23,7 @@ export class HeadNavComponent {
   public q: string;
   public badQuery: boolean = false;
 
-  constructor(private navCtrl: NavController, private http: Http, private api: ApiProvider) {
+  constructor(private navCtrl: NavController, private http: Http, private api: ApiProvider, public currency: CurrencyProvider, public actionSheetCtrl: ActionSheetController) {
   }
 
   private resetSearch(): void {
@@ -98,4 +100,48 @@ export class HeadNavComponent {
   };
   /* tslint:enable:no-unused-variable */
 
+  public changeCurrency() {
+    console.log('changeCurrency');
+    this.presentActionSheet();
+  }
+
+  presentActionSheet() {
+    let actionSheet = this.actionSheetCtrl.create({
+      title: 'Change Currency',
+      buttons: [
+        {
+          text: 'USD',
+          handler: () => {
+            this.currency.setCurrency('USD');
+          }
+        },
+        {
+          text: 'BTC',
+          handler: () => {
+            this.currency.setCurrency('BTC');
+          }
+        },
+        {
+          text: 'mBTC',
+          handler: () => {
+            this.currency.setCurrency('mBTC');
+          }
+        },
+        {
+          text: 'bits',
+          handler: () => {
+            this.currency.setCurrency('bits');
+          }
+        },
+        {
+          text: 'Cancel',
+          role: 'cancel',
+          handler: () => {
+            console.log('Cancel clicked');
+          }
+        }
+      ]
+    });
+    actionSheet.present();
+  }
 }
diff --git a/app/src/pages/block-detail/block-detail.html b/app/src/pages/block-detail/block-detail.html
index fcd94f6..daa0444 100644
--- a/app/src/pages/block-detail/block-detail.html
+++ b/app/src/pages/block-detail/block-detail.html
@@ -24,7 +24,7 @@
     <ion-item>
       Block Reward
       <span item-end>
-        {{ block.reward + ' BTC' }}
+        {{ currency.getConversion(block.reward) }}
       </span>
     </ion-item>
     <ion-item>
diff --git a/app/src/pages/block-detail/block-detail.ts b/app/src/pages/block-detail/block-detail.ts
index 66053d5..fb3b333 100644
--- a/app/src/pages/block-detail/block-detail.ts
+++ b/app/src/pages/block-detail/block-detail.ts
@@ -2,6 +2,7 @@ import { Component } from '@angular/core';
 import { IonicPage, NavController, NavParams } from 'ionic-angular';
 import { Http } from '@angular/http';
 import { ApiProvider } from '../../providers/api/api';
+import { CurrencyProvider } from '../../providers/currency/currency';
 
 /**
  * Generated class for the BlockDetailPage page.
@@ -25,7 +26,7 @@ export class BlockDetailPage {
     tx: []
   };
 
-  constructor(public navCtrl: NavController, private http: Http, public navParams: NavParams, private api: ApiProvider) {
+  constructor(public navCtrl: NavController, private http: Http, public navParams: NavParams, private api: ApiProvider, public currency: CurrencyProvider) {
     this.blockHash = navParams.get('blockHash');
 
     this.http.get(this.api.apiPrefix + 'block/' + this.blockHash).subscribe(