Changing date format in DateField (Checkout UI Extension)

Shopify Plus
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1

Hi everyone,

I’m working on a Shopify Checkout UI Extension and using the DateField component.
Right now, the value returned from DateField is always in the default YYYY-MM-DD format.

For my use case, I want to display and convert this date into MM-DD-YYYY, since it’s easier for customers to understand in that format.

I checked the documentation here:
https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/components/forms/datefield

From what I can tell, the component does not allow customizing the displayed date format.

:red_question_mark: My questions:

  1. Is there any built-in way to change the date format shown in DateField?

  2. If not, what is the recommended workaround?

3

Hello @Divyesh_Bhadarka

The short version: No — Shopify’s DateField component does not currently let you change the displayed date format.
The UI is controlled by Shopify, and the value it returns is always in YYYY-MM-DD (ISO format).

Can we change the displayed format in DateField?

At the moment, no.
As per the docs and practical usage, the component does not expose any props for formatting the visible date (e.g., MM-DD-YYYY or DD-MM-YYYY). Shopify enforces the ISO format for consistency and localization.

Recommended workaround

What you can do is:

1. Convert the date AFTER it’s returned (for saving or displaying elsewhere)

You’ll still get YYYY-MM-DD, but you can reformat it however you want for:

  • Cart attributes

  • Order notes

  • Post-purchase display

  • Merchant-facing UI

Example:

function formatDate(isoDate) {
  const [year, month, day] = isoDate.split("-");
  return `${month}-${day}-${year}`; // MM-DD-YYYY
}

2. Build a custom date selector (if UI format matters a lot)

Since DateField doesn’t support custom formatting, the alternative is:

  • Use three dropdowns (Month / Day / Year), or

  • Use a single text field with validation

This gives complete control over how customers see and type the date, but it also means more maintenance.

Why Shopify uses ISO format

Shopify formats dates according to internationalization standards and keeps the UI consistent across all markets. Until Shopify adds custom formatting support, the ISO format is locked in.

Final Verdict:

  • Built-in custom formatting? Not available.

  • Best workaround? Format the date after you receive it, or build your own custom date input if presentation is critical.