Converters of the measurement units used for measurement data transmission speed, lumber volume measurement and in typography and digital imaging. Description of metric prefixes.
A metric prefix is a unit prefix that precedes a base unit of measure to indicate a decimal multiple or fraction of the unit. Metric prefixes are sometimes called SI prefixes. Each prefix has a unique symbol that is added to the unit symbol. For example, the prefix mega- may be added to ton to indicate multiplication by one million; one megaton is equal to one million tons (1 Mt = 1,000,000 t). Likewise, the prefix milli- may be added to gram to indicate division by one thousand; one milligram is equal to one thousandth of a gram (1 mg = 0.001 g). Metric prefixes are sometimes used with imperial and US customary units such as microinch and kilopound.
In accounting, finance, oil and gas and several other industries, M is sometimes used for a thousand from mille, which is the Roman numeral for a thousand. MM is used for a million which is one thousand squared. MMM is used for a billion which is a thousand cubed. MM for one million can be seen in several traditional units such as MMBtu (one million BTU), MMcf (one million cubic feet). MMM for one billion is used in traditional units such as MMMBtu (one billion BTU), MMMcf (one billion cubic feet). However in Roman numeration, MM actually means 2000, not one million and MMM — 3000, not one billion. Since the single letter M is now used commonly for one million because it is a metric prefix mega-, the use of MM or MMM is confusing and strongly discouraged.
Using the Metric Prefixes Converter
This online unit converter allows quick and accurate conversion between many units of measure, from one system to another. The Unit Conversion page provides a solution for engineers, translators, and for anyone whose activities require working with quantities measured in different units.
You can use this online converter to convert between several hundred units (including metric, British and American) in 76 categories, or several thousand pairs including acceleration, area, electrical, energy, force, length, light, mass, mass flow, density, specific volume, power, pressure, stress, temperature, time, torque, velocity, viscosity, volume and capacity, volume flow, and more.
Note: Integers (numbers without a decimal period or exponent notation) are considered accurate up to 15 digits and the maximum number of digits after the decimal point is 10.
In this calculator, E notation is used to represent numbers that are too small or too large. E notation is an alternative format of the scientific notation a · 10x. For example: 1,103,000 = 1.103 · 106 = 1.103E+6. Here E (from exponent) represents “· 10^”, that is “times ten raised to the power of”. E-notation is commonly used in calculators and by scientists, mathematicians and engineers.
- Select the unit to convert from in the left box containing the list of units.
- Select the unit to convert to in the right box containing the list of units.
- Enter the value (for example “15”) into the left From box.
- The result will appear in the Result box and in the To box.
- Alternatively, you can enter the value into the right To box and read the result of conversion in the From and Result boxes.
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