diff --git a/locales/en.yml b/locales/en.yml
index d03d80d3..17011364 100644
--- a/locales/en.yml
+++ b/locales/en.yml
@@ -75,6 +75,10 @@ tools:
     title: Password strength analyser
     description: Discover the strength of your password with this client-side-only password strength analyser and crack time estimation tool.
 
+  data-storage-converter:
+    title: Data storage converter
+    description: Convert data storage units (bytes, kilobytes, megabytes, gigabytes, terabytes, petabytes, and their binary IEC counterparts) in real time.
+
   chronometer:
     title: Chronometer
     description: Monitor the duration of a thing. Basically a chronometer with simple chronometer features.
diff --git a/src/tools/data-storage-converter/data-storage-converter.models.test.ts b/src/tools/data-storage-converter/data-storage-converter.models.test.ts
new file mode 100644
index 00000000..a16d7510
--- /dev/null
+++ b/src/tools/data-storage-converter/data-storage-converter.models.test.ts
@@ -0,0 +1,36 @@
+import { describe, expect, it } from 'vitest';
+import { bitsToUnit, formatPrecision, unitToBits } from './data-storage-converter.models';
+
+describe('data-storage-converter models', () => {
+  it('converts bits and bytes', () => {
+    expect(unitToBits(1, 'byte')).toBe(8);
+    expect(bitsToUnit(8, 'byte')).toBe(1);
+    expect(unitToBits(1, 'bit')).toBe(1);
+  });
+
+  it('converts decimal (SI) units', () => {
+    expect(unitToBits(1, 'kilobyte')).toBe(8000);
+    expect(bitsToUnit(8e9, 'gigabyte')).toBe(1);
+    expect(bitsToUnit(unitToBits(1, 'petabyte'), 'gigabyte')).toBe(1e6);
+    expect(bitsToUnit(unitToBits(1, 'megabit'), 'kilobit')).toBe(1000);
+  });
+
+  it('converts binary (IEC) units', () => {
+    expect(unitToBits(1, 'kibibyte')).toBe(1024 * 8);
+    expect(bitsToUnit(unitToBits(1, 'gibibyte'), 'megabyte')).toBeCloseTo(1073.741824, 6);
+    expect(bitsToUnit(unitToBits(1, 'pebibyte'), 'terabyte')).toBeCloseTo(1125.899906842624, 6);
+  });
+
+  it('round-trips without loss of precision', () => {
+    for (const unit of ['bit', 'byte', 'megabyte', 'gibibyte', 'terabit', 'pebibyte'] as const) {
+      const bits = unitToBits(123.456, unit);
+      expect(bitsToUnit(bits, unit)).toBeCloseTo(123.456, 6);
+    }
+  });
+
+  it('formats precision by trimming trailing zeros', () => {
+    expect(formatPrecision(0)).toBe('0');
+    expect(formatPrecision(1024)).toBe('1024');
+    expect(formatPrecision(1073.741824)).toBe('1073.741824');
+  });
+});
diff --git a/src/tools/data-storage-converter/data-storage-converter.models.ts b/src/tools/data-storage-converter/data-storage-converter.models.ts
new file mode 100644
index 00000000..87e132fe
--- /dev/null
+++ b/src/tools/data-storage-converter/data-storage-converter.models.ts
@@ -0,0 +1,109 @@
+export type StorageUnit
+  = | 'bit'
+    | 'byte'
+    | 'kilobit'
+    | 'kilobyte'
+    | 'megabit'
+    | 'megabyte'
+    | 'gigabit'
+    | 'gigabyte'
+    | 'terabit'
+    | 'terabyte'
+    | 'petabit'
+    | 'petabyte'
+    | 'kibibit'
+    | 'kibibyte'
+    | 'mebibit'
+    | 'mebibyte'
+    | 'gibibit'
+    | 'gibibyte'
+    | 'tebibit'
+    | 'tebibyte'
+    | 'pebibit'
+    | 'pebibyte';
+
+const BITS_PER_BYTE = 8;
+
+// Decimal (SI) prefixes: powers of 1000
+const SI_PREFIXES: Partial<Record<StorageUnit, number>> = {
+  kilobit: 1e3,
+  kilobyte: 1e3,
+  megabit: 1e6,
+  megabyte: 1e6,
+  gigabit: 1e9,
+  gigabyte: 1e9,
+  terabit: 1e12,
+  terabyte: 1e12,
+  petabit: 1e15,
+  petabyte: 1e15,
+};
+
+// Binary (IEC) prefixes: powers of 1024
+const IEC_PREFIXES: Partial<Record<StorageUnit, number>> = {
+  kibibit: 1024,
+  kibibyte: 1024,
+  mebibit: 1024 ** 2,
+  mebibyte: 1024 ** 2,
+  gibibit: 1024 ** 3,
+  gibibyte: 1024 ** 3,
+  tebibit: 1024 ** 4,
+  tebibyte: 1024 ** 4,
+  pebibit: 1024 ** 5,
+  pebibyte: 1024 ** 5,
+};
+
+export function unitToBits(value: number, unit: StorageUnit): number {
+  let bits: number;
+
+  switch (unit) {
+    case 'bit':
+      bits = value;
+      break;
+    case 'byte':
+      bits = value * BITS_PER_BYTE;
+      break;
+    default: {
+      const factor = SI_PREFIXES[unit] ?? IEC_PREFIXES[unit] ?? 1;
+      bits = unit.endsWith('bit') ? value * factor : value * factor * BITS_PER_BYTE;
+      break;
+    }
+  }
+
+  return bits;
+}
+
+export function bitsToUnit(bits: number, unit: StorageUnit): number {
+  let value: number;
+
+  switch (unit) {
+    case 'bit':
+      value = bits;
+      break;
+    case 'byte':
+      value = bits / BITS_PER_BYTE;
+      break;
+    default: {
+      const factor = SI_PREFIXES[unit] ?? IEC_PREFIXES[unit] ?? 1;
+      value = unit.endsWith('bit') ? bits / factor : bits / factor / BITS_PER_BYTE;
+      break;
+    }
+  }
+
+  return value;
+}
+
+export function formatPrecision(value: number): string {
+  if (Number.isNaN(value) || !Number.isFinite(value)) {
+    return String(value);
+  }
+
+  if (value === 0) {
+    return '0';
+  }
+
+  const abs = Math.abs(value);
+
+  // Use full double precision (up to 12 decimal places), trimming trailing zeros
+  const digits = Math.max(0, 12 - Math.max(0, Math.floor(Math.log10(abs))) - 1);
+  return String(Number(value.toFixed(Math.min(digits, 12))));
+}
diff --git a/src/tools/data-storage-converter/data-storage-converter.vue b/src/tools/data-storage-converter/data-storage-converter.vue
new file mode 100644
index 00000000..f9d94892
--- /dev/null
+++ b/src/tools/data-storage-converter/data-storage-converter.vue
@@ -0,0 +1,61 @@
+<script setup lang="ts">
+import _ from 'lodash';
+import { unitToBits, bitsToUnit, formatPrecision, type StorageUnit } from './data-storage-converter.models';
+
+const units = reactive<Record<StorageUnit, { title: string; ref: number }>>({
+  bit: { title: 'Bits', ref: 0 },
+  kilobit: { title: 'Kilobits', ref: 0 },
+  kilobyte: { title: 'Kilobytes', ref: 0 },
+  kibibit: { title: 'Kibibits', ref: 0 },
+  kibibyte: { title: 'Kibibytes', ref: 0 },
+  megabit: { title: 'Megabits', ref: 0 },
+  megabyte: { title: 'Megabytes', ref: 0 },
+  mebibit: { title: 'Mebibits', ref: 0 },
+  mebibyte: { title: 'Mebibytes', ref: 0 },
+  gigabit: { title: 'Gigabits', ref: 0 },
+  gigabyte: { title: 'Gigabytes', ref: 0 },
+  gibibit: { title: 'Gibibits', ref: 0 },
+  gibibyte: { title: 'Gibibytes', ref: 0 },
+  terabit: { title: 'Terabits', ref: 0 },
+  terabyte: { title: 'Terabytes', ref: 0 },
+  tebibit: { title: 'Tebibits', ref: 0 },
+  tebibyte: { title: 'Tebibytes', ref: 0 },
+  petabit: { title: 'Petabits', ref: 0 },
+  petabyte: { title: 'Petabytes', ref: 0 },
+  pebibit: { title: 'Pebibits', ref: 0 },
+  pebibyte: { title: 'Pebibytes', ref: 0 },
+  byte: { title: 'Bytes', ref: 0 },
+});
+
+function update(key: StorageUnit) {
+  const { ref: value } = units[key];
+
+  const bits = unitToBits(value ?? 0, key);
+
+  _.chain(units)
+    .omit(key)
+    .forEach((_, index) => {
+      units[index as StorageUnit].ref = bitsToUnit(bits, index as StorageUnit);
+    })
+    .value();
+}
+
+update('megabyte');
+</script>
+
+<template>
+  <div>
+    <n-input-group v-for="[key, { title }] in Object.entries(units) as [StorageUnit, { title: string }][]" :key="key" mb-3 w-full>
+      <n-input-group-label style="width: 120px">
+        {{ title }}
+      </n-input-group-label>
+
+      <n-input-number
+        v-model:value="units[key].ref"
+        style="flex: 1"
+        :placeholder="`Value in ${title.toLowerCase()}`"
+        @update:value="() => update(key)"
+      />
+    </n-input-group>
+  </div>
+</template>
diff --git a/src/tools/data-storage-converter/index.ts b/src/tools/data-storage-converter/index.ts
new file mode 100644
index 00000000..df5708af
--- /dev/null
+++ b/src/tools/data-storage-converter/index.ts
@@ -0,0 +1,35 @@
+import { Database } from '@vicons/tabler';
+import { defineTool } from '../tool';
+import { translate } from '@/plugins/i18n.plugin';
+
+export const tool = defineTool({
+  name: translate('tools.data-storage-converter.title'),
+  path: '/data-storage-converter',
+  description: translate('tools.data-storage-converter.description'),
+  keywords: [
+    'data',
+    'storage',
+    'converter',
+    'bytes',
+    'bits',
+    'kilobyte',
+    'megabyte',
+    'gigabyte',
+    'terabyte',
+    'petabyte',
+    'kibibyte',
+    'mebibyte',
+    'gibibyte',
+    'tebibyte',
+    'pebibyte',
+    'bandwidth',
+    'transfer',
+    'speed',
+    'bps',
+    'kbps',
+    'mbps',
+    'gbps',
+  ],
+  component: () => import('./data-storage-converter.vue'),
+  icon: Database,
+});
diff --git a/src/tools/index.ts b/src/tools/index.ts
index 388cfaf4..afc5290d 100644
--- a/src/tools/index.ts
+++ b/src/tools/index.ts
@@ -78,6 +78,7 @@ import { tool as romanNumeralConverter } from './roman-numeral-converter';
 import { tool as sqlPrettify } from './sql-prettify';
 import { tool as svgPlaceholderGenerator } from './svg-placeholder-generator';
 import { tool as temperatureConverter } from './temperature-converter';
+import { tool as dataStorageConverter } from './data-storage-converter';
 import { tool as textStatistics } from './text-statistics';
 import { tool as tokenGenerator } from './token-generator';
 import type { ToolCategory } from './tools.types';
@@ -172,7 +173,7 @@ export const toolsByCategory: ToolCategory[] = [
   },
   {
     name: 'Measurement',
-    components: [chronometer, temperatureConverter, benchmarkBuilder],
+    components: [chronometer, temperatureConverter, benchmarkBuilder, dataStorageConverter],
   },
   {
     name: 'Text',