diff --git a/src/components/form/Form.test.tsx b/src/components/form/Form.test.tsx
index b2bf050..01d20e4 100644
--- a/src/components/form/Form.test.tsx
+++ b/src/components/form/Form.test.tsx
@@ -13,6 +13,8 @@ import { FormField } from "./FormField";
 import { Validator } from "../../hooks/form-validation/useValidation";
 import { RadioButtonGroup, RadioOption } from "./RadioButtonGroup";
 import { USER_EVENT_KEYS_FOR_TESTING_ONLY } from "../../../test/user-event-keys";
+import { now } from "../../utilities/date-utilities";
+import mocked = jest.mocked;
 
 const submitEndpoint = "form-submit-endpoint";
 const formLabelText = "Short information about the form";
@@ -20,6 +22,8 @@ const formLabelText = "Short information about the form";
 const successMessage = "Your issue has been reported, thank you!";
 const pageIdentifier = "test-page";
 
+jest.mock("../../utilities/date-utilities");
+
 describe(Form.name, () => {
     let capturedFormData: AccessibilityFormData;
     let user: UserEvent;
@@ -141,7 +145,14 @@ describe(Form.name, () => {
             let honeypotInput: HTMLInputElement;
             const honeypotValue = "I'm a robot";
 
+            const timeFormWasRendered = 42892453216246;
+            const timeFormWasSubmitted = 42892453641411;
+
             beforeEach(async () => {
+                mocked(now)
+                    .mockName("now")
+                    .mockReturnValueOnce(timeFormWasRendered)
+                    .mockReturnValueOnce(timeFormWasSubmitted);
                 render(<FormWithInputs/>);
 
                 form = screen.getByRole("form");
@@ -197,7 +208,13 @@ describe(Form.name, () => {
             });
 
             test("the form's data is sent to the server", async () => {
-                expect(capturedFormData).toEqual({ name, age, color, honeypotValue });
+                expect(capturedFormData).toEqual({
+                    name,
+                    age,
+                    color,
+                    honeypotValue,
+                    timeToFillForm: `${timeFormWasSubmitted - timeFormWasRendered} milliseconds`
+                });
             });
 
             describe("when form submission succeeds", () => {
diff --git a/src/components/form/Form.tsx b/src/components/form/Form.tsx
index 0370450..e5ecec5 100644
--- a/src/components/form/Form.tsx
+++ b/src/components/form/Form.tsx
@@ -8,6 +8,7 @@ import { FormProvider } from "../../contexts/FormContext";
 import { Observable } from "../../utilities/observable";
 import { SubmitLoadingIcon } from "./SubmitLoadingIcon";
 import { useLiveRegionText } from "../../hooks/useLiveRegionText";
+import { now } from "../../utilities/date-utilities";
 
 type FormProps = ChildrenProps & {
     ariaLabelledBy: string
@@ -23,6 +24,7 @@ export const Form = ({ children, ariaLabelledBy, submitEndpoint, successMessage
     const [showSuccessMessage, setShowSuccessMessage] = useState<boolean>(false);
     const [errorMessage, setErrorMessage] = useState<string>("");
     const [liveRegionText, setLiveRegionText] = useLiveRegionText("");
+    const [timeBeganFillingForm, setTimeBeganFillingForm] = useState(now());
 
     const postFormData = usePOST(submitEndpoint);
 
@@ -55,6 +57,7 @@ export const Form = ({ children, ariaLabelledBy, submitEndpoint, successMessage
             setLiveRegionText("submitting");
 
             const formData = extractFormData(form);
+            formData.timeToFillForm = `${now() - timeBeganFillingForm} milliseconds`;
 
             postFormData(formData, (ok, _, error) => {
                 setSubmitting(false);
@@ -68,7 +71,7 @@ export const Form = ({ children, ariaLabelledBy, submitEndpoint, successMessage
                 }
             });
         }
-    }, [onSubmitObservable, setLiveRegionText, postFormData, onClearObservable]);
+    }, [onSubmitObservable, setLiveRegionText, postFormData, onClearObservable, timeBeganFillingForm]);
 
     return (<div className={"form-container"}>
             {showSuccessMessage &&
diff --git a/src/utilities/date-utilities.test.ts b/src/utilities/date-utilities.test.ts
new file mode 100644
index 0000000..fdfd52b
--- /dev/null
+++ b/src/utilities/date-utilities.test.ts
@@ -0,0 +1,12 @@
+import { now } from "./date-utilities";
+
+describe("date utilities", () => {
+    test("now returns current time in milliseconds since the epoch", () => {
+        const timeFromDate = Date.now();
+        const time = now();
+        const fiveSeconds = 5000;
+
+        expect(time).toBeGreaterThanOrEqual(timeFromDate);
+        expect(time).toBeLessThanOrEqual(timeFromDate + fiveSeconds);
+    });
+});
diff --git a/src/utilities/date-utilities.ts b/src/utilities/date-utilities.ts
new file mode 100644
index 0000000..dee6720
--- /dev/null
+++ b/src/utilities/date-utilities.ts
@@ -0,0 +1 @@
+export const now = (): number => Date.now();