工作日计算器

工作日（Business Days）通常是指周一至周五，不含周末。本工具可计算两个日期之间的工作日天数，适用于项目排期、合同截止日期管理、交货期计算和SLA监控等业务场景。

工具语言：英文 · 按标准周一至周五工作日计算 · 不含公共假期（如需按特定国家假期计算，请使用对应国家工作日计算器）

Pick two dates — get the exact number of Mon–Fri days between them. Weekends excluded, both dates inclusive.

SLA deadlinesProject sprintsNotice periodsPayment termsContract milestones
Example: Mon 3 Feb → Fri 28 Feb = 20 business days (4 working weeks)

After calculating, copy the result into your workflow instead of searching for the calculator again.

Need public holidays excluded? Choose your country: UK · US · France · Germany · Belgium · South Africa · Australia · Singapore · All Europe
Workflow-ready after calculation

Calculate first, then reuse the result

After you calculate, UtilityPilot can turn the result into a clean note you can paste into your SOP, spreadsheet, CRM, Slack, Notion, checklist or email.

Plain-English result — paste into any tool

For internal process notes

For client-ready wording

For Notion, docs or wikis

Share the tool without your values

No sign-up · No stored inputs · Copied text does not include your entered values

Next, you may need…

Add business days to a date

Find the exact date N working days from any start

Adjust a deadline for weekends/holidays

Move a due date to the next working day

Calculate invoice due date

Net 30, 45, 60, 90 or EOM payment terms

Formula

Business Days = Count of Mon–Fri days from Start Date to End Date (inclusive)

Every calendar day between the two dates is checked. If it falls on Monday through Friday, it is counted. Saturday and Sunday are always skipped.

Worked Example

Scenario 1 — SLA tracking:

A support ticket is raised on Monday 5 May. Your SLA requires a resolution within 5 business days.

Start: Monday 5 May • End: Friday 9 May = 5 business days

If the period crossed a weekend (Mon 5 May → Mon 12 May): the result is 6 business days — Saturday and Sunday are excluded.

Scenario 2 — Project sprint duration:

A two-week sprint runs from Monday 3 February to Friday 14 February.

Week 1: Mon–Fri = 5 days • Week 2: Mon–Fri = 5 days

Total: 10 business days

Scenario 3 — Payment terms check:

An invoice is issued on Friday 7 March under Net 30 business days terms. The due date falls on Thursday 17 April (30 business days later, skipping 8 weekend days).

For calendar-day Net 30 terms, use the Invoice Due Date Calculator instead — it handles both calculation methods.

Common Mistakes

  • Forgetting that both dates are inclusive. Mon 1 May to Fri 5 May = 5 business days, not 4.
  • Expecting public holidays to be excluded. This calculator only excludes weekends. For UK or EU bank holidays, use the regional calculators.
  • Confusing calendar days with business days. A 30-calendar-day SLA is not the same as a 30-business-day SLA — the latter is roughly 6 weeks.

Guide

How to Use

  1. 1

    Enter the start date

    Select the first day of the period you want to measure.

  2. 2

    Enter the end date

    Select the last day. Both dates are included in the count.

  3. 3

    Click Count Business Days

    The tool counts every Mon–Fri between the two dates.

  4. 4

    Copy your result

    Use the copy button to paste into emails or project trackers.

Next Steps

What to do next

Find the exact invoice due date

Turn Net 30 / 60 / 90 terms into a specific payment date.

Add N days to a date

What date is exactly 10 or 30 working days from today?

Count with UK bank holidays excluded

Same result with all 8 England & Wales bank holidays removed.

Browse all free calculators on UtilityPilot

FAQ

Frequently Asked Questions

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业务示例

场景：合同规定货物须在签约后30个工作日内交货，签约日期为2025年4月7日（周一）。

· 起始日期：2025年4月7日（周一）

· 加30个工作日（跳过周末）

· 交货截止日 = 2025年5月19日（周一）

· 注：如涉及特定国家公共假期，实际工作日数可能有所不同，建议确认当地假期安排。

按国家计算工作日

如需按特定国家的公共假期计算工作日，请使用以下工具（英文界面）：

香港工作日计算器 →新加坡工作日计算器 →澳大利亚工作日计算器 →英国工作日计算器 →美国工作日计算器 →中国区工作日（印度/泰国/印尼） →

免责声明

计算结果仅供业务规划和参考使用，不构成法律或合同建议。工作日定义因合同和国家规定而有所不同，本工具默认按标准周一至周五计算，不含公共假期。

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