diff --git a/frontend/src/app/components/calculator/calculator.component.ts b/frontend/src/app/components/calculator/calculator.component.ts
index c276db323..39d2bff8e 100644
--- a/frontend/src/app/components/calculator/calculator.component.ts
+++ b/frontend/src/app/components/calculator/calculator.component.ts
@@ -86,6 +86,8 @@ export class CalculatorComponent implements OnInit {
       this.form.get('bitcoin').setValue(bitcoinRate, { emitEvent: false });
     });
 
+    // Default form with 1 BTC
+    this.form.get('bitcoin').setValue(1, { emitEvent: true });
   }
 
   transformInput(name: string): void {