Use this Conversion Calculator to convert between commonly used units. Select the current unit in the left column, the desired unit in the right column, and enter a value in the left column to generate the resulting conversion. A full list of unit conversions is available at unitconverters.net.
Historically, many different systems of units have been used, where a system of units is defined as a collection of units of measurement with rules that relate them to each other. A unit of measurement is a defined magnitude of a quantity that it used as a standard for measurement for the same kind of quantity, such as measurements of length, weight, and volume.
In the past, many systems of measurement were defined on a local level, and could be based on factors as arbitrary as the length of a king's thumb. While this may work on a local level, when considering trade, as well as science, having systems of units based on units that others may not be able to relate to or understand makes interaction difficult. As such, the development of more universal and consistent systems developed over time. Today, some of the systems of units in use include the metric system, the imperial system, and the United States customary units.
The International System of Units (SI) is the standard metric system that is currently used, and consists of seven SI base units of length, mass, time, temperature, electric current, luminous intensity, and amount of substance. Although SI is used almost universally in science (including in the US), some countries such as the United States still use their own system of units. This is partly due to the substantial financial and cultural costs involved in changing a measurement system compared to the potential benefit of using a standardized system. Since US customary units (USC) are so entrenched in the United States, and SI is already used in most applications where standardization is important, everyday use of USC is still prevalent in the United States, and is unlikely to change. As such, many unit converters including this Conversion Calculator exist, and will continue to do so to ensure that people globally are able to communicate different measurements effectively.
Over time, trade spread from the Mediterranean area to Europe, including the northern German City States. As a result, a pound, 16 ounces of silver, or 7200 grains, became a commonly used measure in many regions.
While England also adopted this measure, a shortage of silver caused King Offa to reduce the measurement of the pound to 5400 grains in order to use smaller coins. Eventually, when William the Conqueror became King of England, he retained the 5400-grain pound for minting coins, but reverted to the 7200-grain pound for other purposes.
Though many countries used the pound from that point onward, including England (the British pound sterling, or GBP was equal to one pound-weight of silver in King Offa's time), the avoirdupois weight system was adopted during the reign of Queen Elizabeth in the 16th century. It was a system based on the weight of coal, and its name was derived from the French phrase "avoir de pois" (goods of weight or property). The avoirdupois was equivalent to 7,000 grains, 256 drams of 27.344 grains each, or 16 ounces of 437 grains each. Since 1959, the avoirdupois pound has been officially defined in most English-speaking countries as 0.45359237 kilograms.
In 1668, John Wilkins proposed a decimal system in which length, area, volume, and mass were linked to each other based on a pendulum that had a beat of one second as a base unit of length. In 1670, Gabriel Mouton proposed a decimal system that was instead based on the circumference of the earth, an idea supported by other prominent scientists of the time such as Jean Picard and Christiaan Huygens, but that did not take hold for approximately another 100 years.
By the mid-eighteenth century, it was clear to nations who traded and exchanged scientific ideas that standardization of weights and measures was necessary. In 1790, Charles Maurice de Talleyrand-Perigord, the Prince of Talleyrand, approached the British (represented by John Riggs-Miller) and the Americans (represented by Thomas Jefferson) with proposals to define a common standard of length based on the length of a pendulum. In that same year, Thomas Jefferson, presented the "Plan for Establishing Uniformity in the Coinage, Weights, and Measures of the United States," which advocated for a decimal system in which units were related to each other by powers of ten. A committee that was formed in France comprised of some of the most prominent scientists of the day came to a similar conclusion, and also proposed a decimal system for all weights and measures. Although Congress considered Jefferson's report, it was not adopted. In Great Britain, John Riggs-Miller lost his British Parliamentary seat in the 1790 election. As such, the measurement system was only implemented in France, and in 1795, the metric system was formally defined in French law. It was not until 1799, however, that the metric system was officially adopted in France, though it was still not universally observed across the country.
The spread of the metric system did not occur quickly, and areas that were annexed by France during Napoleon's reign were the first to adopt the metric system. By 1875, two thirds of the European population, and nearly half the world's population had adopted the metric system. By 1920, the percentage of the world's population using the imperial system or the US customary system was 22%, with 25% using mainly the metric system, and 53% using neither.
The International System of Units, currently the most widely used system of measurement, was published in 1960. It has been adopted by all developed countries except for the United States, though as previously mentioned, it is used in science, as well as heavily in the military, even in the US.
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The primary way to measure a Google Analytics conversion is to create or identify an event that measures the important user interaction and then mark the event as a conversion. For example, if you use the Google tag or Tag Manager, you would create the event for your website and then go to Google Analytics to mark the event as a conversion.
Conversion values help you measure and optimize the true business impact of your ad campaigns more accurately. If you assign values to your conversions, you'll be able to learn the total business value that Google Ads generated, rather than simply the number of conversions that have happened. You'll also be able to identify and focus on high-value conversions.
If you don't have a specific return on ad spend target, you can use the Maximize conversion value bid strategy to maximize the total conversion value of your campaign within your specified daily budget.
Better insight: You can measure the total conversion value generated by your campaigns' conversions. This also helps you track your campaigns' ROI by using the "Conversion value/cost" column. You can use this data to identify keywords, ad groups, and campaigns that show a high or low return on investment and manually change bids, budgets, and targeting.
Smarter bidding: Automated bid strategies use the conversion values you set up to automatically set bids to optimize for your performance goals across specific campaigns, ad groups, and keywords.
It is more representative of actual values of a transaction, but can require more work to set up. You might want to use transaction-specific conversion values for your business if each of your sales has a different conversion value.
It is easier to set up but may be less representative of different values of each transaction. You might want to use conversion values that are the same to roughly distinguish several conversion actions from each other.
A high conversion rate means your website is well-designed, formatted effectively, and appealing to your target audience. A low conversion rate could be the result of a variety of factors related to either website performance or design.
Conversions can happen all over your website: on your homepage, pricing page, blog, landing pages, and more. To maximize the potential of converting website visitors into paying customers, you should optimize each location.
In that case, you'd divide the total number of newsletter form submissions by the total number of website visitors and multiply it by 100. So if you had 500 submissions and 20,000 visitors last quarter, then your conversion rate would be 2.5%.
For example, if you want to calculate the conversion rate of your ebook offer, then you'd divide the total number of downloads by the number of people who visited web pages where the ebook offer is listed.
Alternatively, you can calculate your website's overall conversion rate by dividing the total number of conversions for every conversion opportunity on your site by the total number of visitors on your site.
You can do this by emphasizing links to product information, offering a free signup button, or even incorporating a chatbot that solicits questions from visitors at any point during their browsing experience.
CRO can help a pricing page convert visitors into customers by modifying the pricing intervals (e.g. price-per-year vs. price-per-month), describing the product features associated with each price, including a phone number for visitors to call for a price quote, or adding a simple pop-up form.
This process often includes adding calls-to-action (CTA) throughout an article or inviting readers to learn more about a topic by submitting their email address in exchange for an ebook or industry report.
An event landing page, for example, can be optimized with a video of last year's event to encourage visitors to register this year. A landing page that's offering a free resource can be optimized with preview content from that resource to encourage visitors to download it.
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