diff --git a/packages/controller/src/ControlConnection.ts b/packages/controller/src/ControlConnection.ts
index fe02d533..5f3fac4b 100644
--- a/packages/controller/src/ControlConnection.ts
+++ b/packages/controller/src/ControlConnection.ts
@@ -251,6 +251,14 @@ export default class ControlConnection extends BaseConnection {
 
 	async handleInstanceCreateRequest(request: lib.InstanceCreateRequest) {
 		const instanceConfig = new lib.InstanceConfig("controller");
+		if (request.cloneFromId) {
+			const baseInstance = this._controller.instances.get(request.cloneFromId);
+			if (!baseInstance) {
+				throw new lib.RequestError(`Instance with ID ${request.cloneFromId} does not exist`);
+			}
+			instanceConfig.update(baseInstance.config.toJSON(), false);
+			instanceConfig.set("instance.assigned_host", null); // New instances are unassigned
+		}
 		instanceConfig.update(request.config, false, "control");
 		await this._controller.instanceCreate(instanceConfig);
 	}
diff --git a/packages/ctl/src/commands.ts b/packages/ctl/src/commands.ts
index c44d54b9..efe86c4e 100644
--- a/packages/ctl/src/commands.ts
+++ b/packages/ctl/src/commands.ts
@@ -484,16 +484,21 @@ instanceCommands.add(new lib.Command({
 		yargs.positional("name", { describe: "Instance name", type: "string" });
 		yargs.options({
 			"id": { type: "number", nargs: 1, describe: "Instance id" },
+			"from": { type: "number", nargs: 1, describe: "Clone config from instance id" },
 		});
 	}],
-	handler: async function(args: { name: string, id?: number }, control: Control) {
+	handler: async function(args: { name: string, id?: number, from?: number, }, control: Control) {
 		let instanceConfig = new lib.InstanceConfig("control");
 		if (args.id !== undefined) {
 			instanceConfig.set("instance.id", args.id);
 		}
 		instanceConfig.set("instance.name", args.name);
-		const serializedConfig = instanceConfig.toRemote("controller");
-		await control.send(new lib.InstanceCreateRequest(serializedConfig));
+		await control.send(new lib.InstanceCreateRequest(
+			instanceConfig.toRemote("controller", [
+				"instance.id", "instance.name",
+			]),
+			args.from
+		));
 	},
 }));
 
diff --git a/packages/lib/src/config/classes.ts b/packages/lib/src/config/classes.ts
index 4770346c..2546dbf8 100644
--- a/packages/lib/src/config/classes.ts
+++ b/packages/lib/src/config/classes.ts
@@ -312,11 +312,16 @@ export class Config<
 	 * Serialize the config to a plain JavaScript object
 	 *
 	 * @param remote - Location this serialised representation is for
+	 * @param filter - When provided, only the given fields are serialized
 	 * @returns JSON serializable representation of the config.
 	 */
-	toRemote(remote: ConfigLocation): Static<typeof Config.jsonSchema> {
+	toRemote(remote: ConfigLocation, filter?: (keyof Fields)[]): Static<typeof Config.jsonSchema> {
 		let fields: Record<string, FieldValue> = {};
 		for (let [name, value] of Object.entries(this.fields)) {
+			if (filter && !filter.includes(name as keyof Fields)) {
+				continue;
+			}
+
 			let def = this.constructor.fieldDefinitions[name];
 			if (
 				this.location !== "control" && !this._checkAccess(name, def, this.location, ConfigAccess.write, false)
diff --git a/packages/lib/src/data/messages_instance.ts b/packages/lib/src/data/messages_instance.ts
index 554a16a6..63643343 100644
--- a/packages/lib/src/data/messages_instance.ts
+++ b/packages/lib/src/data/messages_instance.ts
@@ -137,14 +137,16 @@ export class InstanceCreateRequest {
 
 	constructor(
 		public config: Static<typeof InstanceConfig.jsonSchema>,
+		public cloneFromId?: number,
 	) { }
 
 	static jsonSchema = Type.Object({
 		"config": InstanceConfig.jsonSchema,
+		"cloneFromId": Type.Optional(Type.Number()),
 	});
 
 	static fromJSON(json: Static<typeof this.jsonSchema>) {
-		return new this(json.config);
+		return new this(json.config, json.cloneFromId);
 	}
 }
 
diff --git a/packages/web_ui/src/components/InstancesPage.tsx b/packages/web_ui/src/components/InstancesPage.tsx
index 660b40e2..c15243c5 100644
--- a/packages/web_ui/src/components/InstancesPage.tsx
+++ b/packages/web_ui/src/components/InstancesPage.tsx
@@ -1,6 +1,6 @@
 import React, { useContext, useState } from "react";
 import { useNavigate } from "react-router-dom";
-import { Button, Form, Input, Modal } from "antd";
+import { Button, Form, Input, Modal, Select, Tooltip } from "antd";
 
 import * as lib from "@clusterio/lib";
 
@@ -13,7 +13,7 @@ import { useInstances } from "../model/instance";
 import InstanceList from "./InstanceList";
 import { notifyErrorHandler } from "../util/notify";
 
-function CreateInstanceButton() {
+function CreateInstanceButton(props: { instances: ReturnType<typeof useInstances>[0] }) {
 	let control = useContext(ControlContext);
 	let navigate = useNavigate();
 	let [open, setOpen] = useState(false);
@@ -28,8 +28,14 @@ function CreateInstanceButton() {
 
 		let instanceConfig = new lib.InstanceConfig("control");
 		instanceConfig.set("instance.name", values.instanceName);
-		const serializedConfig = instanceConfig.toRemote("controller");
-		await control.send(new lib.InstanceCreateRequest(serializedConfig));
+
+		await control.send(new lib.InstanceCreateRequest(
+			instanceConfig.toRemote("controller", [
+				"instance.id", "instance.name",
+			]),
+			values.instanceClone >= 0 ? values.instanceClone : undefined,
+		));
+
 		setOpen(false);
 		navigate(`/instances/${instanceConfig.get("instance.id")}/view`);
 	}
@@ -53,6 +59,16 @@ function CreateInstanceButton() {
 				<Form.Item name="instanceName" label="Name">
 					<Input />
 				</Form.Item>
+				<Tooltip title="Perform a one time copy of an existing config (assigned host is not copied)">
+					<Form.Item name="instanceClone" label="Copy Config">
+						<Select
+							defaultValue={-1}
+							options={[{ id: -1, name: "Default Config" }, ...props.instances.values()]
+								.map(i => ({ value: i.id, label: i.name }))
+							}
+						/>
+					</Form.Item>
+				</Tooltip>
 			</Form>
 		</Modal>
 	</>;
@@ -67,7 +83,7 @@ export default function InstancesPage() {
 		<PageHeader
 			title="Instances"
 			extra={<>
-				{account.hasPermission("core.instance.create") && <CreateInstanceButton />}
+				{account.hasPermission("core.instance.create") && <CreateInstanceButton instances={instances}/>}
 				{account.hasPermission("core.instance.start")
 					&& <Button onClick={e => instances.forEach(instance => {
 						if (instance.status === "stopped") {
diff --git a/test/integration/clusterio.js b/test/integration/clusterio.js
index 0fb17e65..bf07b921 100644
--- a/test/integration/clusterio.js
+++ b/test/integration/clusterio.js
@@ -351,6 +351,23 @@ describe("Integration of Clusterio", function() {
 				await execCtl(`instance config set-prop test factorio.settings visibility "${value}"`);
 				await execCtl("instance config set-prop test factorio.settings require_user_verification false");
 			});
+			it("can clone an instance", async function() {
+				slowTest(this);
+				await execCtl("instance create testClone --id 440 --from 44");
+				const instances = await getInstances();
+				assert(instances.has(440), "instance was not created");
+				assert.equal(instances.get(440).status, "unassigned", "incorrect instance status");
+				const config = await getControl().send(new lib.InstanceConfigGetRequest(44));
+				assert.deepEqual(config["factorio.settings"]["visibility"], { lan: true, public: false });
+				assert.equal(config["factorio.settings"]["require_user_verification"], false);
+			});
+			it("errors when cloning an invalid instance", async function() {
+				slowTest(this);
+				assert.rejects(
+					execCtl("instance create testClone --id 440 --from 441"),
+					new lib.RequestError("Instance with ID 441 does not exist")
+				);
+			});
 		});
 
 		describe("instance assign", function() {