Sobre Nós

There’s a type of frustration everyone has felt at least once. You need to calculate a deadline, you open an online calculator, and the result doesn’t take holidays into account. Or it does, but only for one country. Or it works fine on the computer but crashes on your phone when you need it most. You recalculate by hand, you’re unsure if you got it right, and you waste time you didn’t have.

That’s exactly what led us to create contardias.com .

We didn’t come up with some outlandish idea out of thin air. We came from a real problem, one of those that pop up in the middle of a busy day—a contract deadline to meet, a delivery date to confirm, a calculation of working days that needed to account for holidays in a specific country. The existing tools only solved half the problem. So we decided to build one that truly solved it.

Every detail you see in the tool was carefully considered. The shortcuts for 30, 45, 60, 90, 120, and 180 days are there because they are the most common deadlines in contracts, processes, and work routines. The holiday selector by country is there because those who work with international deadlines can’t afford to make mistakes due to a holiday the calculator didn’t recognize. The toggle to include or exclude the start date is there because that one-day difference has already cost many people fines. Nothing was added to appear complete—it was added because it was needed.

Accuracy is what matters most to us here. Leap years, updated national holidays for six countries, calculations based on calendar days or weekdays (Monday to Friday or Monday to Saturday) — all of this needs to be correct, every time. If one result is wrong, the entire tool loses its value. That’s why we take this seriously.

We also made sure that everything worked well on mobile phones. Not as an adaptation, but as a priority. Most people who need a quick calculation have their phone in their hand, not in front of a computer.

There’s no registration required here. There’s nothing to download. The calculations happen directly on your device. The only data we collect is standard browsing information, such as pages visited and session time, as described in our Privacy Policy.

The tool is free and will remain so.

If you find any errors — an incorrect holiday, a result that doesn’t add up, anything that isn’t working as it should — please let us know. This isn’t protocol. It’s because the only way to keep this reliable is to know when something goes wrong. You can contact us through our contact page .

We built contardias.com to be the tool we wanted to find but couldn’t. If it’s solving your problem, then it’s fulfilling exactly what we promised.