01
Turn off the days you are shut
Seven rows, each with a switch. Untick Sunday and it stops counting. More usefully, it also stops taking a Sunday lunch break off the total, which is the way this sum usually goes wrong when it is done on paper.
Free business hours calculator
Put in when you open and close each day, say how long the break is, and get the number of hours you are actually working each week, plus a tidy list of opening hours to paste onto your website. No account, no email address.
This calculator needs JavaScript to run. The writing under it does not, so how it works, what it will not do and the questions people ask all still read perfectly well.
Nothing leaves this browser. Your opening hours are saved on this device only. There is no account and nothing is uploaded.
How it works
Set each day, take the break off, read the week
02
Put your real times in
Opening and closing, to the quarter hour. The hours for that day appear on the right as you type. A late licence works too: close at 01:00 and it counts through midnight rather than coming out negative.
03
Read the total, then take the list
The box at the bottom shows the hours your doors are open, the hours lost to breaks and the working hours left. Copy opening hours puts the whole week on your clipboard as plain text, ready for a website footer or a Google listing.
Honestly
It counts the hours you are open. It cannot fill them.
What is above is arithmetic with the awkward parts handled: breaks come off only on days you are actually open, and a closing time after midnight counts forward rather than backwards. Your hours are kept in this browser, so clearing your browsing data clears them, and they will not be here on another device.
It also cannot do the four things the number leads to. It does not know how much of that time is already booked. It cannot show those hours to a customer deciding whether to come in. It will not stop somebody asking for four o’clock on the day you close at three. And it knows nothing about bank holidays, the week you shut in August, or the Tuesday you had to close early.
If you want the next four things
-
Your hours are visible to customers
Booking page -
Nobody can book outside them
Availability controls -
Each site keeps its own opening times
Multiple locations -
Every person has their own hours
Team management
Hours that a customer can actually book against is what a booking page is, and Picktime has a free plan rather than a free trial.
Start freeMore free tools
All free toolsEverything here works the same way: no account, nothing saved to us
FREE
Availability calculator
Take the hours you just worked out, subtract what is booked, and see how much is genuinely left to sell.
Work out the gap SHIFTEmployee schedule maker
Build the rota that has to cover these hours, and read what each person adds up to.
Build a rota UTCTimezone converter
Read your opening hours in somebody else’s time zone, with daylight saving handled for you.
Find a timeQuestions
Opening hours: common questions
Is the business hours calculator really free?
Yes, and there is nothing to sign up for. No account, no email address, no trial that runs out and no limit on how often you use it. It is free because it is useful on its own, and because some of the people who use it will eventually want customers to book inside those hours.
Where are my opening hours saved?
In this browser, on this device, and nowhere else. Nothing is uploaded to Picktime and there is no account holding it. It survives closing the tab; it does not survive clearing your browsing data, and it will not appear on another device. Copy opening hours gives you a copy that lasts.
How are breaks counted?
The break you choose is taken off every day you are open, and off no day you are closed. So a business open six days with a one-hour break loses six hours a week, not seven. Set it to No break if people cover for each other and the doors never actually shut.
Can I get the hours out of here?
Copy opening hours puts the whole week on your clipboard as plain text: one line per day, with the total underneath. Paste it into your website footer, your Google listing, or an email.
Does it handle closing after midnight?
Yes. A closing time earlier than the opening time is treated as the next morning, so 18:00 to 01:00 counts as seven hours rather than as a negative number. It does not know about bank holidays or the fortnight you close in summer. This is a normal week, not a calendar.
You know the hours. Now let people book them.
Publish your opening times and let customers pick a slot inside them. Free, no card, set up in minutes.
