diff --git a/types/sindresorhus__to-milliseconds/index.d.ts b/types/sindresorhus__to-milliseconds/index.d.ts
new file mode 100644
index 0000000000..8eb44b2a7b
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+++ b/types/sindresorhus__to-milliseconds/index.d.ts
@@ -0,0 +1,20 @@
+// Type definitions for @sindresorhus/to-milliseconds 1.0
+// Project: https://github.com/sindresorhus/to-milliseconds
+// Definitions by: BendingBender <https://github.com/BendingBender>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+export = toMilliseconds;
+
+declare function toMilliseconds(input: toMilliseconds.TimeSpec): number;
+
+declare namespace toMilliseconds {
+    interface TimeSpec {
+        days?: number;
+        hours?: number;
+        minutes?: number;
+        seconds?: number;
+        milliseconds?: number;
+        microseconds?: number;
+        nanoseconds?: number;
+    }
+}
diff --git a/types/sindresorhus__to-milliseconds/sindresorhus__to-milliseconds-tests.ts b/types/sindresorhus__to-milliseconds/sindresorhus__to-milliseconds-tests.ts
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index 0000000000..aff7ba6fe0
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+++ b/types/sindresorhus__to-milliseconds/sindresorhus__to-milliseconds-tests.ts
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+import toMilliseconds = require('@sindresorhus/to-milliseconds');
+
+// $ExpectType number
+toMilliseconds({
+    days: 15,
+});
+toMilliseconds({
+    hours: 11,
+});
+toMilliseconds({
+    minutes: 23,
+});
+toMilliseconds({
+    seconds: 20,
+});
+toMilliseconds({
+    milliseconds: 1,
+});
+toMilliseconds({
+    microseconds: 1,
+});
+toMilliseconds({
+    nanoseconds: 1,
+});
diff --git a/types/sindresorhus__to-milliseconds/tsconfig.json b/types/sindresorhus__to-milliseconds/tsconfig.json
new file mode 100644
index 0000000000..be9b1a9bec
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+++ b/types/sindresorhus__to-milliseconds/tsconfig.json
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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "paths": {
+            "@sindresorhus/to-milliseconds": [
+                "sindresorhus__to-milliseconds"
+            ]
+        },
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "sindresorhus__to-milliseconds-tests.ts"
+    ]
+}
diff --git a/types/sindresorhus__to-milliseconds/tslint.json b/types/sindresorhus__to-milliseconds/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
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+++ b/types/sindresorhus__to-milliseconds/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }