2020.03.15: New calculator: UK: Mileage Allowance PaymentsFor all hard-working people in UK who can claim their miles to their employers: [unknown calculator id:UK_MileageAllowance].
Employees, self-employed and limited company directors - everyone can claim "business miles" tax-free.
2020.02.22: New table: Table of Polish Insurance Contributions ZUSAdded a collection of data for polish business entities Polish ZUS: rates and base. This is data starting from 2007, refreshed and updated frequently.
2020.02.21: New table: shoe size in the worldWe just added a simple but practical table of shoe sizes. American shoe size, European shoe size, British, men's/woman's etc. - so many different ways of saying "that's the size of my foot, I need a shoe !"
2020.01.04: New calculator: add or subtract days to dateOne more calculator related to time and dates: Add or subtract days/months/years to date. What date is 1000 days from now ? What day was 1000 days before today excluding weekends ? This calculator answers those questions.
2020.01.03: New calculator: Sleep timeSleeping is a major "activity" taking huge part of your life. We finished time spent sleeping calculator which helps finding out the statistics of your sleep - like how many hours you did sleep starting from your birth.
2019.08.15: New calculator: Number base converterWe finally tested Numeral systems well enough, to say it's no longer in beta tests. So, yeah, officially Numeral systems has been released today!
2019.07.27: Calculla on Discord - quick chatWe respond to many emails about internals of our calculators, bugs in their implementation, requests to add some functionalities and much more. We thought it's gonna be easier if we have more rapid way of communication with Calculla users.
We created Discord channel for Calculla - join us!
At the moment - that's just a test. We're going to find out if it really works for us and if it really helps keeping touch with Calculla guests.
Let us know if you like it...
2019.04.26: New calculator: LOGARITHM BASE CONVERTERJust released new calculator for Logarithm base change - logarithm is pure math of course, but the main purpose of that calculator is for more general science.
2019.04.25: Calculla Finally on secure https connectionWe finally converted Calculla to secure website. We are now using https. No more annoying "Not secure" notifications from the browser.
Hopefully, everything is still working as before for you !
Technicals: We used Free Certificates from Let's Encrypt.
2018.06.20: More calculators related to timeWe've just published another 2 new calculators related to time:
2018.06.19: State pension age calculatorVarious countries have different rules of when you can go for state pension, to retire officially.
We gathered data for many countries and created a new calculator of retirement date.
You simply enter your date of birth and select the country and the calculator will tell you what is the date of your retirement.
It shows you also comparison between different countries.
2018.06.18: Zodiac sign calculatorWe just published new calculator of zodiac sign. Just enter your date of birth - and you have you zodiac sign displayed.
As the number of this type of calculators is growing, we've also created new category of calculators - esotericism/numerology.
2018.05.14: 2 new calculators related to timeWe've just published 2 new calculators related to time:
2018.03.30: New Table: Ranges of electromagnetic wavesWe just added new table : Electromagnetic waves
2018.03.29: New table: the TeX/LaTeX cheat sheetWe introduced a lot of math formulas into Calculla's text recently. Writing math formulas with TeX/LaTeX is obvious and standard way of doing that.
To help ourselves and anyone else using TeX/LaTeX we made a Quick TeX cheat sheet.
2018.03.25: Four new math tables addedWe're speeding up with our new TeX/KaTeX usage. Just introduced 4 new tables: Trigonometric functions, Trigonometric reduction formulas, Derivative formulas and Integrals - formulas
2018.03.24: New tables: Substance density and specific heatNew tables about substance properties: Density of substances and Specific heat of substances
2018.03.14: Greek lettersWe do a lot of math TeX notation recently. And also HTML math entities notation. For math and physics a lot of greek letters are normally used, so we made a Table of Greek alphabet with TeX and HTML entities.
2018.02.15: The time: 4 new time calculatorsToday, main topic The Time... We've finished 4 different calculators related to time:
- Got a Time formats converter - accepts date in many formats and many calendars. 2018-01-30 or 18/30/01 or 20180130 or Islamic or Persian calendar. Even something for geeks: the UNIX timestamp.
- The How much time between two dates (two different points in time) - you enter two dates and this calculator finds the number of days between those dates. It can skip public holidays, weekends etc. - all configurable.
- The Time (days) to New Year - how many days until we celebrate the New Year ?
- The Time (days) to school break - how many days until we are free from school ?
2017.09.30: Tires once again: DOT codesOne more new calculator related to tires, to make all the tire related stuff complete - the Tire production date (DOT index) calculator released !
2017.08.24: New table: polish IKE limitsNew table: the annual limits for Polish 3rd pillar retirement pension: Polish retirement pension limits IKE/IKZE
2017.02.01: New calculator: fuel consumptionTwo new calculators finished, both related to fuel consumption of a car, bike, truck, lorry etc. Take a look at Fuel consumption and Fuel consumption units
2017.01.08: Calculla 2.0 releasedNew Calculla Released ! The version 2 of calculla.com has been finished and published. We still have few improvements to do, but the site is already a lot better than old calculla.
More about it here: About new calculla
2015.08.25: Something for drivers: tires indexTwo cars related tables released today: Tyres codes - speed ratings and Tyres codes - load index
2015.07.30: New math tool: fractions comparatorJust one more fractions calculator - Fractions compare calculator: the easiest way to compare fractions
2015.04.06: New math math stuff: more fractions calculatorsThis time 3 new calculators for fractions: Fractions: add and subtract step by step, Fractions: 4 operations and Fractions: inverse (reciprocal). Each of them shows all sub-steps needed to compute common denominators, create improper fraction (if needed), reduce the fraction etc.
2015.03.29: Simple and useful: percents calculatorYou love it or you hate it. You understand it or don't have a clue. Percents, percentage is a powerful tool to say about part of something. We made the Percentage calculator to make your life easier.
2015.03.11: New simulation: compound interestNew calculator of Compound Interest: It computes the future value of your deposit/investment assuming any interest you'll get every year, you'll just add to existing capital. This way the "compount interest" is being created. This calculator has a little bit similar idea to When I'll be Millionaire calculator we released couple of weeks ago.
2015.02.21: If I were a rich man: millionaire calculatorNew calculator in finance section, but less serious this time: The Millionaire Calculator. We wish you to gather your first million quick&fast, doesn't matter if the million comes with Dollars, Euros, Pounds or Zlotys (hopefully not Zimbabwe Dollars).
2015.02.14: For electronics: resistor colorsNew calculator for electronic engineering: Resistor colors calculator.
2015.02.07: News for nerds: IP calculator is JS based nowUpdate: The IP subnets Calculator has been rewritten ! This was the last old-tech calculator done in server-side. Now it's pure client-side - no more website reloads, so works faster !
2015.01.18: calculla is celebrating: 50 calculators releasedWe've released two simple tables with unit prefixes (like kilo, mega, micro, etc.): the SI prefixes table and similar one for IT purposes the binary prefixes table.
Also one more IT calculator added: calculator of bandwidth (internet connection bandwidth) - it supports even exotic units of bandwidth like peta-bytes per day.
A small celebration for us: we've just crossed 50 working calculators ! Next milestone is 100 - stay with us !