---
title: "Business Day Calendar - Check monthly business days and working hours"
description: "Review monthly business days and working hours, excluding weekends, holidays, and year-end closures. Adjust days off, half days, working days, and daily hours to match your schedule for effort estimates."
canonical_url: "https://web-toolbox.dev/en/tools/business-calendar"
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  "og:title": "Business Day Calendar - Check monthly business days and working hours"
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> Index of every page on this site: [llms.txt](https://web-toolbox.dev/llms.txt)

# **Business Day Calendar**

Check business days and working hours on a calendar

## What is Business Day Calendar?

Review business days and working hours for a month, excluding weekends, public holidays, and year-end closures. Use it for effort estimates and deadline planning.

You can count a weekend or holiday as a working day. Days off and half days can also be set per day to match your actual schedule.

## How to Use

1. Open the month you want to review.
2. Set daily working hours or a year-end break if needed.
3. Select a day on the calendar and choose business day, half day, or day off. Weekends and holidays can be set as business days too.
4. Check business days and working hours. For the current month, remaining days and hours including today are also shown.

Half days count as 0.5 business days.

## Main Settings

### Working hours per day

The basis for monthly working hours. Use it for 7.5-hour or part-time schedules as well as a standard 8-hour day.

### Year-end break

Set a start and end date to treat the range as days off. Ranges that cross into the next year are supported.

## Use Cases

- Planning workload from the business days and working hours at the start of a month
- Checking remaining days and hours before a deadline
- Matching estimates to a month with Saturday work or work on public holidays
- Reviewing billable hours after reflecting year-end closures and personal days off

## Things to Keep in Mind

- Public holidays are based on the Japanese holiday calendar
- If holiday data cannot be loaded, holidays are counted as working days and a warning is shown

**How was your experience?**

Last updated: October 31, 2026

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