diff --git a/benchmark/url/url-searchparams-creation.js b/benchmark/url/url-searchparams-creation.js
new file mode 100644
index 00000000000000..1cc51ed7db47af
--- /dev/null
+++ b/benchmark/url/url-searchparams-creation.js
@@ -0,0 +1,79 @@
+'use strict';
+const common = require('../common.js');
+
+const values = {
+  noencode: {
+    foo: 'bar',
+    baz: 'quux',
+    xyzzy: 'thud',
+  },
+  encodemany: {
+    '\u0080\u0083\u0089': 'bar',
+    '\u008C\u008E\u0099': 'quux',
+    'xyzzy': '\u00A5q\u00A3r',
+  },
+  encodelast: {
+    foo: 'bar',
+    baz: 'quux',
+    xyzzy: 'thu\u00AC',
+  },
+  array: {
+    foo: [],
+    baz: ['bar'],
+    xyzzy: ['bar', 'quux', 'thud'],
+  },
+  multiprimitives: {
+    foo: false,
+    bar: -13.37,
+    baz: 'baz',
+  },
+};
+
+function paramGenerator(paramType) {
+  const valueKeys = Object.keys(values);
+  switch (paramType) {
+    case 'string':
+      // Return the values object with all values as strings
+      return valueKeys.reduce((acc, key) => {
+        acc[key] = Object.keys(values[key]).reduce((acc, k, i) => {
+          acc += `${k}=${values[key][k]}${i < valueKeys.length - 1 ? '&' : ''}`;
+          return acc;
+        }, '');
+        return acc;
+      }, {});
+    case 'iterable':
+      // Return the values object with all values as iterable
+      return valueKeys.reduce((acc, key) => {
+        acc[key] = Object.keys(values[key]).reduce((acc, k) => {
+          acc.push([k, values[key][k]]);
+          return acc;
+        }, []);
+        return acc;
+      }, {});
+    case 'object':
+      // Return the values object with all values as objects
+      return values;
+    default:
+  }
+}
+
+const bench = common.createBenchmark(main, {
+  type: ['noencode', 'encodemany', 'encodelast', 'array', 'multiprimitives'],
+  inputType: ['string', 'iterable', 'object'],
+  n: [1e6],
+});
+
+function main({ n, type, inputType }) {
+  const inputs = paramGenerator(inputType);
+  const input = inputs[type];
+
+  // Force optimization before starting the benchmark
+  for (const name in inputs) {
+    new URLSearchParams(inputs[name]);
+  }
+
+  bench.start();
+  for (let i = 0; i < n; i += 1)
+    new URLSearchParams(input);
+  bench.end(n);
+}
diff --git a/benchmark/url/url-searchparams-toString.js b/benchmark/url/url-searchparams-toString.js
new file mode 100644
index 00000000000000..04551d19659129
--- /dev/null
+++ b/benchmark/url/url-searchparams-toString.js
@@ -0,0 +1,76 @@
+'use strict';
+const common = require('../common.js');
+
+const values = {
+  noencode: {
+    foo: 'bar',
+    baz: 'quux',
+    xyzzy: 'thud',
+  },
+  encodemany: {
+    '\u0080\u0083\u0089': 'bar',
+    '\u008C\u008E\u0099': 'quux',
+    'xyzzy': '\u00A5q\u00A3r',
+  },
+  encodelast: {
+    foo: 'bar',
+    baz: 'quux',
+    xyzzy: 'thu\u00AC',
+  },
+  array: {
+    foo: [],
+    baz: ['bar'],
+    xyzzy: ['bar', 'quux', 'thud'],
+  },
+  multiprimitives: {
+    foo: false,
+    bar: -13.37,
+    baz: 'baz',
+  },
+};
+
+function paramGenerator(paramType) {
+  const valueKeys = Object.keys(values);
+  switch (paramType) {
+    case 'string':
+      // Return the values object with all values as strings
+      return valueKeys.reduce((acc, key) => {
+        const objectKeys = Object.keys(values[key]);
+        acc[key] = objectKeys.reduce((acc, k, i) => {
+          acc += `${k}=${values[key][k]}${i < objectKeys.length - 1 ? '&' : ''}`;
+          return acc;
+        }, '');
+        return acc;
+      }, {});
+    case 'iterable':
+      // Return the values object with all values as iterable
+      return valueKeys.reduce((acc, key) => {
+        acc[key] = Object.keys(values[key]).reduce((acc, k) => {
+          acc.push([k, values[key][k]]);
+          return acc;
+        }, []);
+        return acc;
+      }, {});
+    case 'object':
+      // Return the values object with all values as objects
+      return values;
+    default:
+  }
+}
+
+const bench = common.createBenchmark(main, {
+  type: ['noencode', 'encodemany', 'encodelast', 'array', 'multiprimitives'],
+  inputType: ['string', 'iterable', 'object'],
+  n: [1e6],
+});
+
+function main({ n, type, inputType }) {
+  const inputs = paramGenerator(inputType);
+  const input = inputs[type];
+  const u = new URLSearchParams(input);
+
+  bench.start();
+  for (let i = 0; i < n; i += 1)
+    u.toString();
+  bench.end(n);
+}