Online measuring converter

For assistance in enabling JavaScript, please contact the webmaster. Acceleration Many different acceleration constants. Computers and Electronics Various conversions and calculators related to computers and electronics.

Plus other cooking conversions such as butter weight, and gas mark temperatures. Energy Joules, Btu, calories, electronvolt, erg, watt hour, therm, toe, tce, More Flow Rate Many different flowrate conversions. Includes separate pages for mass based, volume based, and mole based flowrates. Frequency Hertz, cycles per second, revolutions per second, degrees per second, radians per second, many more Mapping Many calculators and converters related to mapping and navigation.

Miscellaneous Several calculators and conversions that didn't fit any other category. Numbers Number conversions and information. Pixels per inch : , show ruler adjuster. Dragging ruler adjuster left or right to fit the size of your reference object, remember to save the setting for the next time you use it, after save the setting, refresh your brower to check the result.

On the most popular browsers you can press the F5 key or click on the refresh button. We hope to provide a more user-friendly experience, are you willing to offer a native language version for your country? We are looking for volunteer to improve the content in your native language, if you are interested to help this, please visit this translation page. Below are some other language version. One day, i took my laptop computer to work in the coffee shop, just had a project on hand, and i had to tell the customer the actual size of a product.

Just like usual, i didn't carry a ruler with me, so i connected to the internet and tried to find an online virtual ruler to measure my product.

Unfortunately, after i tried the virtual online rulers on the Internet, i found a problem that these existing online rules are not very accurate. If i just want to know what the approximate length is, that's fine, but what i need is a more precise length so that i can apply it to my daily work. The Chinese also developed a means to ensure accuracy through the use of a special size of bowl used for measurements that also made a specific sound when struck — if the sound was off pitch, the measurement was not accurate.

In , 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 , 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 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 , 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. As such, the measurement system was only implemented in France, and in , the metric system was formally defined in French law. It was not until , 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 , two thirds of the European population, and nearly half the world's population had adopted the metric system. The International System of Units, currently the most widely used system of measurement, was published in 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.