Free business days calculator
Find the date — or the count — in two seconds. Switch to Add mode and the business days calculator returns the date a set number of business days from your start date (skipping weekends and any holidays you list); switch to Count mode to count the business days between two dates — updated live, as you type.
On this page14 sections
Skips Saturdays and Sundays; add your own holiday dates to skip those too. Business days vs. calendar days
Results are estimates. Consult a professional.
What is a business day?
A business day — also called a working day or workday — is any weekday from Monday to Friday on which normal commercial and government operations take place. Saturdays, Sundays, and public holidays are not business days. This business days calculator uses that definition to do two things: add or subtract a number of business days to a start date ("what date is 10 business days from now?"), and count the business days between two dates.
Business days matter because so many deadlines are written in them rather than in plain calendar days. Shipping estimates, payment terms, service-level agreements, legal filing windows, and return policies are routinely quoted as "5 business days" or "within 10 working days" — and because weekends and holidays are skipped, that always lands later on the calendar than the same number of plain days.
Adding business days vs. counting business days
This calculator has two modes, and they answer two different questions. Add mode is a scheduling tool — give it a start date and a number, and it returns the date that many business days away. Count mode is a duration tool — give it two dates, and it returns how many business days fall between them.
Add mode — the start day is not counted
When you add business days, the calculator steps forward from your start date one day at a time, skipping weekends and holidays, until it has counted the number you asked for. The start date itself is never counted — you land on the n-th business day after it. So a Friday plus 1 business day is the following Monday, and a Monday plus 5 business days is the next Monday. Enter a negative number to subtract instead (step backward).
Count mode — both endpoints are included
When you count business days between two dates, the calculator includes both the start and end date (whenever each is itself a business day). So Monday through Friday of the same week counts as 5 business days, and Monday through the following Monday counts as 6.
How to add business days to a date
Adding business days is a simple day-by-day walk. Use it whenever a deadline is quoted in business or working days and you need the actual calendar date it falls on.
- Start from your date. The start day is the launch point and is never counted toward the total.
- Step forward one calendar day. Move to the next day on the calendar.
- Is it a business day? If it is a Saturday, Sunday, or holiday, skip it without counting. Otherwise, count it as one business day.
- Repeat until you reach N. Keep stepping and counting until you have counted the number of business days you need — the day you land on is the answer.
A worked example using the business days calculator
Dana places a wholesale order on Tuesday, June 9, 2026. The supplier quotes delivery in 10 business days. Dana wants the real calendar date — here is exactly how the calculator walks it out.
Step 1 — Start from June 9 (don't count it)
Tuesday, June 9 is the launch point. It is not counted. The first business day is the next day, Wednesday, June 10 (business day 1).
Step 2 — Count weekdays, skip the first weekend
Counting forward, June 10, 11, and 12 (Wed–Fri) are business days 1, 2, and 3. Saturday June 13 and Sunday June 14 are skipped. Monday June 15 and Tuesday June 16 bring the total to 5.
Step 3 — Cross the second weekend to day 10
| Date | Day | Business day count |
|---|---|---|
| Jun 10 | Wed | 1 |
| Jun 11 | Thu | 2 |
| Jun 12 | Fri | 3 |
| Jun 13–14 | Sat–Sun | skipped |
| Jun 15 | Mon | 4 |
| Jun 16 | Tue | 5 |
| Jun 17 | Wed | 6 |
| Jun 18 | Thu | 7 |
| Jun 19 | Fri | 8 |
| Jun 20–21 | Sat–Sun | skipped |
| Jun 22 | Mon | 9 |
| Jun 23 | Tue | 10 |
Two weekends (four days) are skipped, so 10 business days spans 14 calendar days.
Weekends and holidays: what counts as a non-working day
By default, the calculator skips Saturdays and Sundays — the standard Monday-to-Friday working week used in most Western commercial and legal contexts. Weekends are the one thing every business-day calculation excludes.
Holidays are optional. If you supply a list of holiday dates, the calculator skips those too, exactly as it skips weekends. This matters because most real deadlines exclude public holidays as well as weekends — a "5 business day" turnaround that crosses a holiday lands a day later still.
| Day type | Counted as a business day? |
|---|---|
| Monday–Friday (ordinary) | Yes |
| Saturday | No — always skipped |
| Sunday | No — always skipped |
| Public holiday you supply | No — skipped like a weekend |
| Holiday that falls on a weekend | No — already skipped as a weekend |
Weekends are skipped automatically; holidays are skipped only when you provide them.
Business days vs. calendar days (net 30, shipping, SLAs)
A calendar day is any day of the week; a business day excludes weekends and holidays. Because roughly two in every seven days are weekends, a span quoted in business days always runs longer on the calendar than the same number of calendar days — about 40% longer over a multi-week period. Reading a deadline as the wrong type is one of the most common scheduling mistakes.
| Term | Usually means | Why it matters |
|---|---|---|
| Net 30 / Net 60 / Net 90 | Calendar days, in most US contracts | Payment is due 30 calendar days out unless the contract says business days |
| Shipping / delivery estimate | Business days | "5 business days" excludes weekends — a Friday order can arrive the next Friday |
| SLA response / resolution | Business days | Support windows count working days, often within business hours only |
| Legal / filing deadline | Often business days | Court and procedural rules frequently exclude weekends and holidays |
Sources: businessdaycalculator.org and standard US commercial practice. Always check the exact wording of your contract.
How to handle holidays in a business-days calculation
Weekends are universal, but holidays are not — they vary by country, state, industry, and even by individual company. That is why this calculator treats holidays as an optional list you supply rather than guessing a fixed national calendar that may not match your situation.
- List the holidays that apply to you. Use your own office calendar or the relevant public-holiday list — the US has 11 federal holidays, but your jurisdiction or employer may observe a different set.
- Use the observed date, not the nominal one. When a holiday falls on a weekend, add the day it is actually observed (the adjacent Friday or Monday), since that is the day offices close.
- A holiday on a weekend changes nothing. It is already skipped as a weekend, so adding it has no extra effect.
- When a deadline lands on a non-working day, most contracts and procedural rules roll it forward to the next business day — check whether yours does.
If you only need a plain Monday–Friday count and don't want to manage a holiday list, the working days between dates calculator counts weekdays between two dates without holidays — the pure-count sibling of this tool.
Common business days questions
Are weekends business days?
No. In most commercial and legal contexts, Saturdays and Sundays are not business days — only Monday through Friday count, and public holidays are excluded too. This calculator skips weekends automatically and skips any holidays you supply.
How many business days are in a year?
About 250–262, depending on how the weekends fall and how many public holidays you subtract. A 365-day year has roughly 104 weekend days; remove those and a typical year leaves around 260 weekdays, or about 250 once federal holidays are taken out.
Does "working days" mean the same as "business days"?
Yes — in most commercial and legal contexts the terms are used interchangeably. Both mean weekdays excluding public holidays. This site uses "business days" for the add/subtract scheduling tool and "working days" for the plain Monday–Friday count between two dates, but the underlying definition is the same.
How this calculator works and sources
This business days calculator does pure calendar arithmetic in your browser — nothing is sent anywhere. To add, it steps forward (or backward) one day at a time from your start date, skipping Saturdays, Sundays, and any holidays you supply, until it has counted the requested number of business days; the start day is never counted. To count, it walks from the start date to the end date inclusive of both endpoints, tallying each weekday that is not a holiday. All dates are computed in UTC so the result never shifts by a day across time zones.
timeanddate.com — Business Date Calculator (add/subtract workdays, holidays, weekends).businessdaycalculator.org — Business Days vs Calendar Days.Frequently asked questions about the free business days calculator
About this business days calculator
This business days calculator runs entirely in your browser. The dates you enter never leave your device — nothing is sent to a server, logged, or shared. It skips Saturdays, Sundays, and any holidays you supply, and updates instantly on every change.
Calculators Cloud offers 400+ free tools with no sign-up. The whole Everyday calculators shelf includes the working days between dates, date calculator, and days between dates calculators alongside this one. Or browse the full calculator directory.