How do I use the Weekday Calendar?

Paste your calendar input on the left and click Run — results appear instantly on the right. Click "Try Sample" to load an example that demonstrates what the Weekday Calendar does. Copy the output with the button above the panel, or download it as a file with the icon next to it. Related keywords: calendar, month. If you're looking for a specific variant, check the Related tools strip below.

What can I use the Weekday Calendar for?

Quick calendar transformations during development Debugging production payloads without leaving the browser Generating sample data for tests, demos, and documentation Sharing reproducible tool output with teammates

Is the Weekday Calendar free and private?

Yes — it runs in your browser, requires no signup for basic use, and your data never leaves your device. ISO 8601 lets you write dates that sort alphabetically AND chronologically. Always prefer 2026-04-19 over 04/19/2026.

DevTools Surf

Weekday Calendar

Render a month-at-a-glance calendar grid — YYYY-MM input

1 credit

YYYY-MM (e.g. 2026-04)

Month Grid

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