HTML · INPUT TYPE

HTML input type=month: Month and Year Picker

Last reviewed November 3, 2026

An <input type="month"> lets users pick a year and a month. The submitted value is always YYYY-MM, such as 2026-11, whatever format the picker shows. An empty field sends an empty string. Firefox and desktop Safari show a plain text box instead of a picker, so always validate the value on the server.

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Attributes & common mistakes

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Fill in the form above and press its button. The demo stops the request and lists every name=value pair the browser would send, plus the controls it leaves out.

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Example HTML (changes re-run the live demo)

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Minimal snippet

month-input-example.html

<input type="month" id="start_month" name="start_month" min="2026-01" max="2027-12">

Copy-paste code

HTML input type=month code you can paste today.

Replace YOUR_ACCESS_KEY with a key from your free splitforms dashboard. The form posts to one endpoint — submissions land in your inbox and dashboard with spam filtering built in.

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input-type-month.html

<form action="https://splitforms.com/api/submit" method="POST">
  <input type="hidden" name="access_key" value="YOUR_ACCESS_KEY">

  <label for="name">Name</label>
  <input type="text" id="name" name="name" autocomplete="name" required>

  <label for="start_month">Start month</label>
  <input type="month" id="start_month" name="start_month"
         min="2026-01" max="2027-12" required>

  <!-- Honeypot: hidden from people, bots fill it in -->
  <input type="checkbox" name="botcheck" style="display:none" tabindex="-1" autocomplete="off">

  <button type="submit">Send</button>
</form>

Attributes · <input type="month">

Which HTML input type=month attributes matter?

These attributes decide how the <input type="month"> behaves and what actually gets emailed to your inbox when someone submits.

HTML input type=month attributes and what each one does
Attribute	What it does	Docs
`value`	The default month in `YYYY-MM` format (such as `2026-11`). This is also the format the form submits.	MDN
`min`	The earliest month allowed, in `YYYY-MM` format (such as `2026-01`).	MDN
`max`	The latest month allowed, in `YYYY-MM` format (such as `2027-12`).	MDN
`step`	The step in months. The default is 1. Use `3` to allow every third month, counted from `min`.	MDN
`required`	Requires a month to be chosen before the form can be submitted.	MDN
`list`	The id of a `<datalist>` with suggested months, each as a `YYYY-MM` value.	MDN

Common mistakes

HTML input type=month not working? Here's why.

Most broken forms come down to a few small mistakes with the <input type="month">. Check these before you ship, then forward every submission to Slack or a webhook.

Firefox and desktop Safari show a plain text box
These browsers have no month picker, so users type free text. Add pattern="\d{4}-\d{2}" and placeholder="YYYY-MM" as a fallback. Browsers with a picker ignore both. Still check the value on the server.
No day or time zone is sent
The value is only a year and a month, such as 2026-11. There is no day, time or time zone. If you need a full date, build it on the server.
Don't use it for card expiry dates
Card expiry is not a good fit for a month picker. Payment forms use a plain text field in MM/YY format with autocomplete="cc-exp", so browsers and password managers can fill it in.
step counts months, not days
step="3" allows every third month, counted from min (or from value when there is no min). It does not mean three days.

Sources: WHATWG HTML Standard: <input type="month"> · MDN: <input type="month">

Copy-paste ready

The HTML input type=month example below is a complete, working form — paste it into any HTML page and it submits, no edits to the markup required.

No backend to build

Your html input type=month form posts to one endpoint. No server, PHP, or API route — accepted submissions are saved to your dashboard before owner notification email is attempted; delivery time and inbox placement depend on provider and recipient settings.

A form that really submits

Unlike a static reference snippet, this <input type="month"> form actually sends data to a free splitforms backend, with spam filtering built in.

How it works

How to add HTML input type=month to any page.

Copy the html input type=month example, drop in your free access key, and paste it into any page — submissions start landing in your dashboard.

Copy the code

Copy the HTML input type=month example below.

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Replace YOUR_ACCESS_KEY with a free splitforms key from the dashboard.

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Drop the form into any HTML page. Submissions arrive in your dashboard.

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Questions

HTML input type=month questions, answered.

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What value does input type month send to the backend?

It sends a string in YYYY-MM format, such as 2026-11, under the input's name. The format is the same in every browser and locale. An empty field sends an empty string.

How do I set a default month?

Set the value attribute in YYYY-MM format, such as value="2026-11". In JavaScript, set input.value to the same format.

How do I limit the month range?

Use min and max in YYYY-MM format, such as min="2026-01" max="2027-12". Months outside the range are flagged as invalid when the form is submitted.

Which browsers support input type month?

Chrome, Edge and other Chromium browsers show a month picker, and so does Safari on iPhone and iPad. Firefox and desktop Safari show a plain text box, so add a pattern and placeholder as a fallback.

How do I turn the month value into a date on the server?

Append -01 to get the first day of the month, such as 2026-11-01, and parse that as a date. Check the value matches YYYY-MM first, because the text-box fallback can send anything.

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