Calendar

Browse calendar months with optional ISO week numbers. Navigate months, see today, and pick dates with this free online calendar in your browser.

How to Use

  1. Use arrow buttons to move to previous or next month.
  2. Read the month title centered in the navigation bar.
  3. Toggle Show ISO week numbers to display week indices.
  4. Click any day cell to select it and see the date below.
  5. Return to today mentally by navigating to the current month.

Input Field Guide

Month navigation
Previous and next buttons change the displayed month without reloading the page.
Show ISO week numbers
Overlays ISO 8601 week numbers for each row when enabled.
Day cells
Click a day to select it; selection summary appears under the grid.

Understanding Your Results

The grid shows weekday-aligned days for the visible month with today styled distinctly. Selected date text appears below the grid. With week numbers enabled, each row includes the ISO week index matching the week-number calculator rules.

Features

Real-World Use Cases

Practical Examples

Week overlay

Enable ISO weeks to see that 13 Jul 2026 sits in week 29 row.

Month walk

Navigate from December to January to see year boundary week numbers change.

Benefits

Tips & Best Practices

Common Mistakes to Avoid

Frequently Asked Questions

Does the online calendar show holidays?

It shows the civil month grid; public holidays are not labeled unless they fall on visible dates without special styling.

What ISO week standard is used?

ISO 8601 Monday-based weeks, consistent with the week-number calculator.

Can I jump to a specific year quickly?

Use repeated next/previous navigation; there is no year jump field.

How do I see today?

Navigate to the current month; today is highlighted in the grid.

Does selecting a date calculate anything?

Selection displays below the grid; use other tools for math.

Is the calendar printable?

Use browser print on the page if needed; layout is screen-oriented.

Does week view show partial weeks?

Month grid includes leading/trailing adjacent-month days grayed for alignment.

Is calendar usage tracked?

No. Rendering is local in your browser.

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