diff --git a/src/components/toolbox/countdown-timer/countdown-timer.tsx b/src/components/toolbox/countdown-timer/countdown-timer.tsx
index 613ca15..378066d 100644
--- a/src/components/toolbox/countdown-timer/countdown-timer.tsx
+++ b/src/components/toolbox/countdown-timer/countdown-timer.tsx
@@ -1,5 +1,7 @@
 import { Modal } from '@/components/modal';
 
+import { Form } from './form';
+
 interface TimerProps {
   onClose: () => void;
   show: boolean;
@@ -9,6 +11,7 @@ export function CountdownTimer({ onClose, show }: TimerProps) {
   return (
     <Modal show={show} onClose={onClose}>
       <h1>Hello World</h1>
+      <Form />
     </Modal>
   );
 }
diff --git a/src/components/toolbox/countdown-timer/form/field/field.module.css b/src/components/toolbox/countdown-timer/form/field/field.module.css
new file mode 100644
index 0000000..585811f
--- /dev/null
+++ b/src/components/toolbox/countdown-timer/form/field/field.module.css
@@ -0,0 +1,27 @@
+.field {
+  flex-grow: 1;
+
+  & .label {
+    display: block;
+    margin-bottom: 8px;
+    font-size: var(--font-sm);
+    font-weight: 500;
+
+    & .optional {
+      font-weight: 400;
+      color: var(--color-foreground-subtle);
+    }
+  }
+
+  & .input {
+    width: 100%;
+    min-width: 0;
+    height: 40px;
+    padding: 0 16px;
+    color: var(--color-foreground);
+    background-color: var(--color-neutral-50);
+    border: 1px solid var(--color-neutral-200);
+    border-radius: 4px;
+    outline: none;
+  }
+}
diff --git a/src/components/toolbox/countdown-timer/form/field/field.tsx b/src/components/toolbox/countdown-timer/form/field/field.tsx
new file mode 100644
index 0000000..6b057a8
--- /dev/null
+++ b/src/components/toolbox/countdown-timer/form/field/field.tsx
@@ -0,0 +1,51 @@
+import styles from './field.module.css';
+
+interface FieldProps {
+  children?: React.ReactNode;
+  label: string;
+  onChange: (value: string | number) => void;
+  optional?: boolean;
+  type: 'text' | 'select';
+  value: string | number;
+}
+
+export function Field({
+  children,
+  label,
+  onChange,
+  optional,
+  type,
+  value,
+}: FieldProps) {
+  return (
+    <div className={styles.field}>
+      <label className={styles.label} htmlFor={label.toLowerCase()}>
+        {label}{' '}
+        {optional && <span className={styles.optional}>(optional)</span>}
+      </label>
+
+      {type === 'text' && (
+        <input
+          autoComplete="off"
+          className={styles.input}
+          id={label.toLowerCase()}
+          type="text"
+          value={value}
+          onChange={e => onChange(e.target.value)}
+        />
+      )}
+
+      {type === 'select' && (
+        <select
+          autoComplete="off"
+          className={styles.input}
+          id={label.toLowerCase()}
+          value={value}
+          onChange={e => onChange(parseInt(e.target.value))}
+        >
+          {children}
+        </select>
+      )}
+    </div>
+  );
+}
diff --git a/src/components/toolbox/countdown-timer/form/field/index.ts b/src/components/toolbox/countdown-timer/form/field/index.ts
new file mode 100644
index 0000000..497b3a7
--- /dev/null
+++ b/src/components/toolbox/countdown-timer/form/field/index.ts
@@ -0,0 +1 @@
+export { Field } from './field';
diff --git a/src/components/toolbox/countdown-timer/form/form.module.css b/src/components/toolbox/countdown-timer/form/form.module.css
new file mode 100644
index 0000000..b6a60ee
--- /dev/null
+++ b/src/components/toolbox/countdown-timer/form/form.module.css
@@ -0,0 +1,28 @@
+.form {
+  display: flex;
+  flex-direction: column;
+  row-gap: 28px;
+
+  & .button {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    width: 100%;
+    height: 45px;
+    font-weight: 500;
+    color: var(--color-neutral-50);
+    cursor: pointer;
+    background-color: var(--color-neutral-950);
+    border: none;
+    border-radius: 8px;
+    outline: none;
+    box-shadow: inset 0 -3px 0 var(--color-neutral-700);
+  }
+}
+
+.timeFields {
+  display: flex;
+  column-gap: 12px;
+  align-items: flex-end;
+  justify-content: space-between;
+}
diff --git a/src/components/toolbox/countdown-timer/form/form.tsx b/src/components/toolbox/countdown-timer/form/form.tsx
new file mode 100644
index 0000000..066df86
--- /dev/null
+++ b/src/components/toolbox/countdown-timer/form/form.tsx
@@ -0,0 +1,97 @@
+import { useState, useMemo } from 'react';
+
+import { Field } from './field';
+
+import { useCountdownTimers } from '@/stores/countdown-timers';
+
+import styles from './form.module.css';
+
+export function Form() {
+  const [name, setName] = useState('');
+  const [hours, setHours] = useState(0);
+  const [minutes, setMinutes] = useState(10);
+  const [seconds, setSeconds] = useState(0);
+
+  const totalSeconds = useMemo(
+    () => hours * 60 * 60 + minutes * 60 + seconds,
+    [hours, minutes, seconds],
+  );
+
+  const add = useCountdownTimers(state => state.add);
+
+  const handleSubmit = (e: React.FormEvent<HTMLFormElement>) => {
+    e.preventDefault();
+
+    if (totalSeconds === 0) return;
+
+    add({
+      name,
+      total: totalSeconds,
+    });
+
+    setName('');
+  };
+
+  return (
+    <form className={styles.form} onSubmit={handleSubmit}>
+      <Field
+        label="Timer Name"
+        optional
+        type="text"
+        value={name}
+        onChange={value => setName(value as string)}
+      />
+
+      <div className={styles.timeFields}>
+        <Field
+          label="Hours"
+          type="select"
+          value={hours}
+          onChange={value => setHours(value as number)}
+        >
+          {Array(13)
+            .fill(null)
+            .map((_, index) => (
+              <option key={`hour-${index}`} value={index}>
+                {index}
+              </option>
+            ))}
+        </Field>
+
+        <Field
+          label="Minutes"
+          type="select"
+          value={minutes}
+          onChange={value => setMinutes(value as number)}
+        >
+          {Array(60)
+            .fill(null)
+            .map((_, index) => (
+              <option key={`minutes-${index}`} value={index}>
+                {index}
+              </option>
+            ))}
+        </Field>
+
+        <Field
+          label="Seconds"
+          type="select"
+          value={seconds}
+          onChange={value => setSeconds(value as number)}
+        >
+          {Array(60)
+            .fill(null)
+            .map((_, index) => (
+              <option key={`seconds-${index}`} value={index}>
+                {index}
+              </option>
+            ))}
+        </Field>
+      </div>
+
+      <button className={styles.button} type="submit">
+        Add Timer
+      </button>
+    </form>
+  );
+}
diff --git a/src/components/toolbox/countdown-timer/form/index.ts b/src/components/toolbox/countdown-timer/form/index.ts
new file mode 100644
index 0000000..9398c9e
--- /dev/null
+++ b/src/components/toolbox/countdown-timer/form/index.ts
@@ -0,0 +1 @@
+export { Form } from './form';
diff --git a/src/stores/countdown-timers/index.ts b/src/stores/countdown-timers/index.ts
new file mode 100644
index 0000000..0f44edf
--- /dev/null
+++ b/src/stores/countdown-timers/index.ts
@@ -0,0 +1,107 @@
+import { v4 as uuid } from 'uuid';
+import { create } from 'zustand';
+import { createJSONStorage, persist } from 'zustand/middleware';
+
+interface Timer {
+  id: string;
+  name: string;
+  spent: number;
+  total: number;
+}
+
+interface State {
+  spent: () => number;
+  timers: Array<Timer>;
+  total: () => number;
+}
+
+interface Actions {
+  add: (timer: { name: string; total: number }) => void;
+  delete: (id: string) => void;
+  getTimer: (id: string) => Timer;
+  rename: (id: string, newName: string) => void;
+  reset: (id: string) => void;
+  tick: (id: string, amount?: number) => void;
+}
+
+export const useCountdownTimers = create<State & Actions>()(
+  persist(
+    (set, get) => ({
+      add({ name, total }) {
+        set(state => ({
+          timers: [
+            {
+              id: uuid(),
+              name,
+              spent: 0,
+              total,
+            },
+            ...state.timers,
+          ],
+        }));
+      },
+
+      delete(id) {
+        set(state => ({
+          timers: state.timers.filter(timer => timer.id !== id),
+        }));
+      },
+
+      getTimer(id) {
+        return get().timers.filter(timer => timer.id === id)[0];
+      },
+
+      rename(id, newName) {
+        set(state => ({
+          timers: state.timers.map(timer => {
+            if (timer.id !== id) return timer;
+
+            return { ...timer, name: newName };
+          }),
+        }));
+      },
+
+      reset(id) {
+        set(state => ({
+          timers: state.timers.map(timer => {
+            if (timer.id !== id) return timer;
+
+            return { ...timer, spent: 0 };
+          }),
+        }));
+      },
+
+      spent() {
+        return get().timers.reduce((prev, curr) => prev + curr.spent, 0);
+      },
+
+      tick(id, amount = 1) {
+        set(state => ({
+          timers: state.timers.map(timer => {
+            if (timer.id !== id) return timer;
+
+            const updatedSpent =
+              timer.spent + amount > timer.total
+                ? timer.total
+                : timer.spent + amount;
+
+            return { ...timer, spent: updatedSpent };
+          }),
+        }));
+      },
+
+      timers: [],
+
+      total() {
+        return get().timers.reduce((prev, curr) => prev + curr.total, 0);
+      },
+    }),
+    {
+      name: 'moodist-countdown-timers',
+      partialize: state => ({ timers: state.timers }),
+      skipHydration: true,
+      storage: createJSONStorage(() => localStorage),
+      version: 0,
+    },
+  ),
+);