Frequently asked questions
- What are the sources?
- Mechanism - What is the method used to obtain and display the real-time numbers?
- Are numbers obtained in real time? How is this possible?
- Are these real numbers? What is the validity of these numbers?
- How accurate is the data?
- What is the confidence interval and the standard deviation?
- What does "this year" refer to?
- What does "today" refer to?
- Do you publish the total figures for a given year anywhere?
- Is Worldometers.info an official organization? Who is Worldometers.info?
- Can I place your counters (all, a selection, or a singular one) on my website?
- Can I place a link to Worldometers.info on my website ?
- I have written a research paper and used Worldometers as a source. How should I cite it?
- I can't see the numbers. Why?
- I have a question not included here
What are the sources?
Sources are carefully selected to include only data published by the most prestigious institutions in the world, such as the United Nations, the World Health Organization, the Food and Agriculture Organization, its data branch FAOstat, the OECD and others (click here for a list of sources). A list of sources used for each specific counter is displayed when clicking on "more info" at the right of each counter on the home page.
Mechanism - What is the method used to obtain and display the real-time numbers?
The counters that display the real-time numbers are based on Worldometers’ algorithm that processes the latest and most accurate statistical data available together with its estimated progression to compute the current millisecond number to be displayed on each counter, based on the specific time set on each visitor’s computer clock.
Are numbers obtained in real time? How is this possible?
Numbers displayed on the web page are obtained automatically from Worldometers’ algorithm. The algorithm itself, and the numbers included in the algorithm, are not updated in real time simply because the sources from which the data is derived are not able to provide real time updates, but only periodical ones. Worldometers’ team updates the algorithm, and the numbers and formulas herein included, on an ongoing basis as new data becomes available.
Are these real numbers? What is the validity of these numbers?
Numbers that are not “real” or “valid” have no meaning and are useless. In determining the value of statistical information, credibility of the source plays a basic role. For this reason, Worldometers has selected only the most reputable organizations and statistical offices in the world as providers of the statistical data entered into Worldometers’ algorithm and displayed on the counters. Furthermore, the underlying data in the formulas are updated on an ongoing basis by Worldometers’ team as new data becomes available.
How accurate is the data? (Worldometers accuracy)
As accurate as it can get. As with any statistical data, numbers are not a 100% accurate representation of the phenomenon, but they nevertheless provide an informative description of it. For each set of statistics we perform extensive research and data mining in order to bring the most authoritative, comprehensive, and timely information to be displayed on the counters. However, numbers in most cases can’t be exact because the sources from which the data is derived, even though they are the best available in the world, are not able to provide exact numbers, but only estimates. This inherited limitation must be taken into account for the correct interpretation of the information.
What is the confidence interval and the standard deviation?
Each counter has a different level of accuracy that depends on the type of statistics represented. For most data however, there aren’t confidence intervals in the statistical sense, because the approximation can’t be quantified in a rigorous probabilistic manner.
What does "this year" refer to?
Counters are reset to zero at the beginning of each solar year (January 1). Therefore "this year" refers to the period from January 1, 2015 (00:00) up to the moment (day and time) when you visit the site.
What does "today" refer to?
The counters use your computer's clock, so "today" means the total number for that data set starting from the beginning of the current day as calculated on your computer's clock.
Do you publish the total figures for a given year anywhere?
Currently we don't. You can set your computer's clock at 11:59 PM of December 31 and observe the resulting Worldometers' home page to get a very rough approximation.
Is Worldometers.info an official organization? Who is Worldometers.info?
Worldometers.info is not directly or indirectly owned or managed by any governmental organization, United Nations organization, public charity, non-profit, or private foundation. Worldometers.info is owned by Dadax, a private enterprise, and managed by an international team of independent developers, researchers, and volunteers with the goal of making world statistics available in a thought-provoking and time relevant format to a wide audience around the world. Worldometers.info uses data and statistics from the most reputable organizations and statistical offices around the world, including the United Nations and many other official organizations. However Worldometers is not affiliated, associated with, or in any way has any official status with the United Nations or any other official organization.
Learn more about Worldometers here.
Can I place your counters (all, a selection, or a singular one) on my website?
You can add our real time statistics on your website by paying the annual licensing fee. Visit the licensing section to learn more.
Can I place a link to Worldometers.info on my website ?
Yes, thank you.
I have written a research paper and used Worldometers as a source. How should I cite it?
Assuming you are using the MLA style and that your reference is the home page:
Worldometers - real time world statistics. dd mon.m yyyy. (date you accessed the website) Worldometers.info. dd mon. yyyy (date of last update: same as date you accessed the website) <http://www.worldometers.info>.
I can't see the numbers. Why?
If you have a question not included here:
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