diff --git a/package.json b/package.json
index 380cd91..2f8109d 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@curiousleaf/utils",
   "description": "A lightweight set of utilities",
-  "version": "1.0.28",
+  "version": "1.0.29",
   "license": "MIT",
   "type": "module",
   "author": {
diff --git a/src/format/format.test.ts b/src/format/format.test.ts
index 342d886..9332030 100644
--- a/src/format/format.test.ts
+++ b/src/format/format.test.ts
@@ -5,9 +5,46 @@ import {
   formatCurrency,
   formatIntervalAmount,
   formatMimeType,
+  formatNumber,
   formatToDecimals,
 } from "./format"
 
+describe("formatNumber", () => {
+  it("formats numbers with compact notation (default)", () => {
+    expect(formatNumber(1000)).toBe("1K")
+    expect(formatNumber(1500)).toBe("1.5K")
+    expect(formatNumber(1000000)).toBe("1M")
+  })
+
+  it("formats numbers with standard notation", () => {
+    expect(formatNumber(1000, "standard")).toBe("1,000")
+    expect(formatNumber(1000000, "standard")).toBe("1,000,000")
+  })
+
+  it("formats numbers with different locales", () => {
+    expect(formatNumber(1000, "compact", "de-DE")).toBe("1000")
+  })
+
+  it("formats large numbers", () => {
+    expect(formatNumber(1000000000)).toBe("1B")
+    expect(formatNumber(1500000000)).toBe("1.5B")
+  })
+
+  it("formats small numbers", () => {
+    expect(formatNumber(0.1)).toBe("0.1")
+    expect(formatNumber(0.01)).toBe("0.01")
+  })
+
+  it("formats zero", () => {
+    expect(formatNumber(0)).toBe("0")
+  })
+
+  it("formats negative numbers", () => {
+    expect(formatNumber(-1000)).toBe("-1K")
+    expect(formatNumber(-1500000)).toBe("-1.5M")
+  })
+})
+
 describe("formatCurrency", () => {
   it("formats a number as currency", () => {
     expect(formatCurrency(1000)).toBe("$1,000")
diff --git a/src/format/format.ts b/src/format/format.ts
index 0ff19c1..e4408ed 100644
--- a/src/format/format.ts
+++ b/src/format/format.ts
@@ -2,8 +2,22 @@
  * Utility functions for formatting data.
  */
 
+type Notation = Intl.NumberFormatOptions["notation"]
 type Currency = Intl.NumberFormatOptions["currency"]
 
+/**
+ * Formats a number with thousands separators.
+ * @param number - The number to format.
+ * @param notation - The notation to use for formatting. Defaults to 'standard'.
+ * @param locale - The locale to use for formatting. Defaults to 'en-US'.
+ * @returns The formatted number as a string.
+ */
+export const formatNumber = (number: number, notation: Notation = "compact", locale = "en-US") => {
+  const formatter = new Intl.NumberFormat(locale, { notation })
+
+  return formatter.format(number)
+}
+
 /**
  * Formats a given amount of money into a currency string.
  * @param amount The amount of money to format.