diff --git a/src/lib/addressconverter.ts b/src/lib/addressconverter.ts
index 46a6542a5..686b4c385 100644
--- a/src/lib/addressconverter.ts
+++ b/src/lib/addressconverter.ts
@@ -73,3 +73,28 @@ export const bsvirt_to_fsvirt = new AddressSectionMapper([
   { off_beg: 0x8044ec00, off_end: 0x804ac804, delta: 0x1a0 },
   { off_beg: 0x804ac880, off_end: 0x8081f013, delta: 0x200 },
 ]);
+
+// Boom Street Virtual to Itadaki Street Wii Virtual
+export const bsvirt_to_isvirt = new AddressSectionMapper([
+  { off_beg: 0x80000100, off_end: 0x8007a283, delta: 0x0 },
+  { off_beg: 0x8007a2f4, off_end: 0x80268717, delta: 0x94 },
+  { off_beg: 0x8026871f, off_end: 0x8040d97b, delta: 0x90 },
+  { off_beg: 0x8040d97f, off_end: 0x80410278, delta: 0x80 },
+  { off_beg: 0x80410578, off_end: 0x8044ebe3, delta: 0x2a8 },
+  { off_beg: 0x8044ebff, off_end: 0x804ac804, delta: 0x2c0 },
+  { off_beg: 0x804ac880, off_end: 0x8081f013, delta: 0x300 },
+]);
+
+// Itadaki Street Wii Virtual to Itadaki Street Wii File
+export const isvirt_to_isfile = new AddressSectionMapper([
+  { off_beg: 0x80004000, off_end: 0x80006720, delta: 0x80003f00 },
+  { off_beg: 0x80006720, off_end: 0x80006c80, delta: 0x7fbfda80 },
+  { off_beg: 0x80006c80, off_end: 0x80007480, delta: 0x7fbfda80 },
+  { off_beg: 0x80007480, off_end: 0x8040d900, delta: 0x80004c60 },
+  { off_beg: 0x8040d900, off_end: 0x8040de40, delta: 0x80003f00 },
+  { off_beg: 0x8040de40, off_end: 0x8040de60, delta: 0x80003f00 },
+  { off_beg: 0x8040de80, off_end: 0x8044e940, delta: 0x80003f20 },
+  { off_beg: 0x8044e940, off_end: 0x804ac560, delta: 0x80003f20 },
+  { off_beg: 0x80814980, off_end: 0x808170c0, delta: 0x8036c340 },
+  { off_beg: 0x80818ca0, off_end: 0x8081ece0, delta: 0x8036df20 },
+]);
diff --git a/src/pages/calculator.astro b/src/pages/calculator.astro
index 3d08295dd..e33f0030e 100644
--- a/src/pages/calculator.astro
+++ b/src/pages/calculator.astro
@@ -2,12 +2,14 @@
 import Layout from '~/layouts/layout.astro';
 ---
 <script>
-  import { bsvirt_to_bsfile, bsvirt_to_fsvirt, fsvirt_to_fsfile } from '~/lib/addressconverter';
+  import { bsvirt_to_bsfile, bsvirt_to_fsvirt, bsvirt_to_isvirt, fsvirt_to_fsfile, isvirt_to_isfile } from '~/lib/addressconverter';
   
   let fsvirt: number | null;
   let bsvirt: number | null;
+  let isvirt: number | null;
   let fsfile: number | null;
   let bsfile: number | null;
+  let isfile: number | null;
 
   const setAddress = (input: HTMLInputElement, address: number | null): number | null => {
     if (address !== null) {
@@ -18,25 +20,31 @@ import Layout from '~/layouts/layout.astro';
 
   const fsvirt_input = document.getElementById('fsvirt_input') as HTMLInputElement;
   const bsvirt_input = document.getElementById('bsvirt_input') as HTMLInputElement;
+  const isvirt_input = document.getElementById('isvirt_input') as HTMLInputElement;
   const fsfile_input = document.getElementById('fsfile_input') as HTMLInputElement;
   const bsfile_input = document.getElementById('bsfile_input') as HTMLInputElement;
+  const isfile_input = document.getElementById('isfile_input') as HTMLInputElement;
 
   const inputHandler = (e: Event) => {
     const target = e.target as HTMLInputElement;
     fsvirt_input.classList.remove('is-valid', 'is-invalid');
     bsvirt_input.classList.remove('is-valid', 'is-invalid');
+    isvirt_input.classList.remove('is-valid', 'is-invalid');
     fsfile_input.classList.remove('is-valid', 'is-invalid');
     bsfile_input.classList.remove('is-valid', 'is-invalid');
+    isfile_input.classList.remove('is-valid', 'is-invalid');
     let address = parseInt(target.value, 16);
 
     switch (target) {
       case fsvirt_input:
         fsvirt = address;
         bsvirt = setAddress(bsvirt_input, bsvirt_to_fsvirt.inverseMap(fsvirt));
-        if (bsvirt !== null) {
+        isvirt = setAddress(isvirt_input, bsvirt_to_isvirt.map(bsvirt));
+        if (bsvirt !== null || isvirt !== null) {
           target.classList.add('is-valid');
           setAddress(fsfile_input, fsvirt_to_fsfile.map(fsvirt));
           setAddress(bsfile_input, bsvirt_to_bsfile.map(bsvirt));
+          setAddress(isfile_input, isvirt_to_isfile.map(isvirt));
         } else {
           target.classList.add('is-invalid');
         }
@@ -44,22 +52,39 @@ import Layout from '~/layouts/layout.astro';
       case bsvirt_input:
         bsvirt = address;
         fsvirt = setAddress(fsvirt_input, bsvirt_to_fsvirt.map(bsvirt));
-        if (fsvirt !== null) {
+        isvirt = setAddress(isvirt_input, bsvirt_to_isvirt.map(bsvirt));
+        if (fsvirt !== null || isvirt !== null) {
           target.classList.add('is-valid');
           setAddress(fsfile_input, fsvirt_to_fsfile.map(fsvirt));
           setAddress(bsfile_input, bsvirt_to_bsfile.map(bsvirt));
+          setAddress(isfile_input, isvirt_to_isfile.map(isvirt));
         } else {
           target.classList.add('is-invalid');
         }
         break;
+      case isvirt_input:
+        isvirt = address;
+        bsvirt = setAddress(bsvirt_input, bsvirt_to_isvirt.inverseMap(isvirt));
+        fsvirt = setAddress(fsvirt_input, bsvirt_to_fsvirt.map(bsvirt));
+        if (bsvirt !== null || fsvirt !== null) {
+          target.classList.add('is-valid');
+          setAddress(fsfile_input, fsvirt_to_fsfile.map(fsvirt));
+          setAddress(bsfile_input, bsvirt_to_bsfile.map(bsvirt));
+          setAddress(isfile_input, isvirt_to_isfile.map(isvirt));
+        } else {
+          target.classList.add('is-invalid');
+        }
+        break;        
       case fsfile_input:
         fsfile = address;
         fsvirt = setAddress(fsvirt_input, fsvirt_to_fsfile.inverseMap(fsfile));
         if (fsvirt !== null) {
           target.classList.add('is-valid');
           bsvirt = setAddress(bsvirt_input, bsvirt_to_fsvirt.inverseMap(fsvirt));
-          if (bsvirt !== null) {
+          isvirt = setAddress(isvirt_input, bsvirt_to_isvirt.map(bsvirt))
+          if (bsvirt !== null || isvirt !== null) {
             setAddress(bsfile_input, bsvirt_to_bsfile.map(bsvirt));
+            setAddress(isfile_input, isvirt_to_isfile.map(isvirt));
           }
         } else {
           target.classList.add('is-invalid');
@@ -71,7 +96,24 @@ import Layout from '~/layouts/layout.astro';
         if (bsvirt !== null) {
           target.classList.add('is-valid');
           fsvirt = setAddress(fsvirt_input, bsvirt_to_fsvirt.map(bsvirt));
-          if (fsvirt !== null) {
+          isvirt = setAddress(isvirt_input, bsvirt_to_isvirt.map(bsvirt));
+          if (fsvirt !== null || isvirt !== null) {
+            setAddress(fsfile_input, fsvirt_to_fsfile.map(fsvirt));
+            setAddress(isfile_input, isvirt_to_isfile.map(isvirt));
+          }
+        } else {
+          target.classList.add('is-invalid');
+        }
+        break;
+      case isfile_input:
+        isfile = address;
+        isvirt = setAddress(isvirt_input, isvirt_to_isfile.inverseMap(isfile));
+        if (isvirt !== null) {
+          target.classList.add('is-valid');
+          bsvirt = setAddress(bsvirt_input, bsvirt_to_isvirt.inverseMap(isvirt));
+          fsvirt = setAddress(fsvirt_input, bsvirt_to_fsvirt.map(bsvirt));
+          if (bsvirt !== null || fsvirt !== null) {
+            setAddress(bsfile_input, bsvirt_to_bsfile.map(bsvirt));
             setAddress(fsfile_input, fsvirt_to_fsfile.map(fsvirt));
           }
         } else {
@@ -84,15 +126,17 @@ import Layout from '~/layouts/layout.astro';
   // Add event listeners to input elements
   fsvirt_input.addEventListener('input', inputHandler);
   bsvirt_input.addEventListener('input', inputHandler);
+  isvirt_input.addEventListener("input", inputHandler);
   fsfile_input.addEventListener('input', inputHandler);
   bsfile_input.addEventListener('input', inputHandler);
+  isfile_input.addEventListener('input', inputHandler);
 </script>
 <Layout title="Address Calculator">
   <section class="jumbotron text-center">
     <div class="w3-card-4 w3-center w3-display-topmiddle w3-margin-bottom-16">
       <h1 class="w3-container w3-blue w3-padding-16">Fortune Street Address Calculator</h1>
       <div class="container text-center">
-        <div class="row row-cols-2 g-3">
+        <div class="row row-cols-3 g-3">
           <div class="col">
             <label class="form-label">Fortune Street Virtual</label>
             <input type="text" id="fsvirt_input" placeholder="80004000" class="form-control" />
@@ -101,6 +145,10 @@ import Layout from '~/layouts/layout.astro';
             <label class="form-label">Boom Street Virtual</label>
             <input type="text" id="bsvirt_input" placeholder="80004000" class="form-control" />
           </div>
+          <div class="col">
+            <label class="form-label">Itadaki Street Wii Virtual</label>
+            <input type="text" id="isvirt_input" placeholder="80004000" class="form-control" />
+          </div>
           <div class="col">
             <label class="form-label">Fortune Street File</label>
             <input type="text" id="fsfile_input" placeholder="100" class="form-control" />
@@ -109,6 +157,10 @@ import Layout from '~/layouts/layout.astro';
             <label class="form-label">Boom Street File</label>
             <input type="text" id="bsfile_input" placeholder="100" class="form-control" />
           </div>
+          <div class="col">
+            <label class="form-label">Itadaki Street Wii File</label>
+            <input type="text" id="isfile_input" placeholder="100" class="form-control" />
+          </div>
         </div>
       </div>
     </div>