Unit Conversion Online

Convert time units, hours, minutes, seconds, days, weeks, months
There are different calendars used worldwide but international standard is gregorian calendar.
Second is the SI base unit of time and officially defined as the duration of 9 192 631 770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom.
This time conversion calculator converts the most common time units, second, hour, minute, day, week, month, year, century and more.
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The purpose of this document is to provide information, formulas and documentation to take certain electrical values and convert them into other electrical values. The formulas below are known and used universally but we use them here in association with computer, network, telecom and other IT equipment.
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Convert pascal (pa), kpa, mpa, torr (mmhg), psi, atm, bar, newton square meter
Pressure is defined as the force per unit area applied on a surface in a direction perpendicular to that surface.
To calculate the pressure formula is :
 Pressure = Force / Area.
 Pressure unit in SI system is pascal (pa). It is equivalent to one newton per square meter.
 Other pressure units, kilopascal (kpa), megapascal (mpa), psi (pound per square inch), torr (mmHg), atm (atmospheric pressure), bar and pound per square foot are widely used.
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Convert energy units, joules, calories, btu, erg, kwh, mwh
Energy is a measure of how long we can sustain the output of power, or how much work we can do. There are two kinds of energy: potential and kinetic.
Potential energy is waiting to be converted into power. Gasoline in a fuel tank as an example. Kinetic energy is energy a body possesses because it is in motion.Work is the application of a force over a distance. Work is equal to the product of the force and the distance through which it produces movement.
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Density conversion is a free online calculator for converting metric and imperial units of density. Conversion between kilogram/cubic meter, gram/cubic centimeter, kilogram/liter, pound/cubic inch, gram/cubic centimeter
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Convert metric and imperial volume units
Volume is the amount of three dimensional space occupied by an object. It can be calculated by different formulas depending on the shape of the object.
In metric system, unit of volume is cubic meters. Liter is not a metric unit but widely used in metric system. The most common imperial volume units are gallon, quart, pint.This conversion calculator converts the most common volume units.
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Convert force units, newton, kilonewton, dyne, pound force, kg force
Force is defined as the acting on a body causes that body to accelerate.
Force calculation formula is :
 Force = mass (kg etc) * acceleration (meter per second squared etc)
 Force unit in SI system is the Newton (N), which is equivalent to kg·m·s2.
 Other force units such as kilonewton, meganewton, pound force, kilogram force, dyne are widely used.
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Convert celsius, fahrenheit, kelvin, reaumur, rankine
Temperature is a measure of how hot or cold something is which is the result of the motion of particles which make up the substance.
Temperature unit in SI system is Kelvin (K). Other temperature scales are degrees celsius, fahrenheit, reaumur, rankine.
Temperature conversion formulas for celsius and fahrenheit :
 Fahrenheit = Celsius * 9 / 5 + 32
 Celsius = (Fahrenheit  32) * 5 / 9
Interesting Temperature facts
Event Fahrenheit Celsius Kelvin When Water boils 212 100 373 When Alcohol boils 174 79 352 What is Normal body temperature 98 36 310 When Water freezes 32 0 273 When Nitrogen boils 320 195 77 When Helium boils 452 268 4 What is Absolute Zero 459 273 0
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Convert mpg (miles per gallon), liters per 100 kilometers (km) and more
Fuel consumption is the amount of fuel used for a unit of distance. Gallons, liters per 100 kilometers (liter/100 km), gallons per 100 miles are normally used in europe to compare fuel consumption. The lower the value, the car, the vehicle has better gas mileage.
Fuel economy, efficiency is the distance traveled per unit of fuel, gas. Kilometers per liter, miles per gallon (mpg), miles per liter, km per gallons are used in north america, uk, for gas economy. The higher the value, the car is more fuel efficient.
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Convert speed units, meters per second, miles per hour, kilometers per hour
Speed is defined as the rate of change in position, expressed as distance traveled per unit of time. Speed is a scalar quantity with dimensions distance/time. Velocity is a vector quantity, the rate at which an object changes it's position.
In order to calculate speed, the formula is :
 Speed = Distance / Time
 Speed unit in SI system is meters per second (mps).
 Other speed units such as miles per hour (mph), kilometers per hour (kph) are also widely used.
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Convert metric and imperial length, distance units
Length (distance) is one dimensional measure between two end points.
There are many units used for length measurement. In metric system, basic unit of length is meter (m) and defined as speed of light. Other metric length units kilometer (km), centimeter (cm), millimeter (mm) are widely used.
In imperial system, common length units are foot, inch, yard and mile.
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Use this mass and weight converter to convert instantly between pounds, ounces, kilograms, grams, stones, tonnes and other metric and imperial weight units.
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Convert power units, watts, kilowatt (kw), megawatt (mw), horsepower (hp)
Power is the rate at which work is performed or energy is transferred.
The units of power are units of energy divided by time.
Power calculation formula is :
 Power = Work / Time
 Power unit in SI system is watts (w). Other power units, kilowatts (kw), megawatts (mw), gigawatts (gw), horsepower (hp) are widely used.
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 Unit Conversion Online  Conversion tool about more than 200 units type