RAMAS Software 

Units
Calculator


Problem  Answer  
1 foot + 2 inches 14 cm * 5 cm 15 m / 3 sec 2 kg > 2.1 lb 2 m ^ 3 10 kg m >= 5 ft lb 40 $/widgets * 5 widgets sin 300 degrees inch , cm 4 m/sec + 20 cm/sec 10 kg * 9.8 m/sec^{2} + 1 newton 2 miles / 9 mph + 4 min 1/@ 12 apples + 5 oranges 27 kg^{2} + 18 seconds 
14 inches 70 cm^{2} 5 m.sec^{1} Yes 8 m^{3} Yes 200 $ 0.866 2.54 cm 420 cm.sec^{1} 99 newton 17.3333 min reciprocal of the last value computed error: apples and oranges don't conform error: [mass]^{2} and [time] don't conform 

Apples and oranges Units Calculator understands dimensional algebra and keeps you from adding apples and oranges, or meters and seconds. The Units Calculator also traps more subtle dimensional errors such as trying to raise a number to the "2 inch" power. Automatic simplification Units Calculator will automatically cancel units whenever possible and collect repeated units into squares, cubes, etc. You can also ask it to further simplify the units as much as possible without changing the dimension. However, it wouldn't change, for instance, hertz to reciprocal second or vice versa unless you want it to or unless it has to in order to solve your problem. Support for SI At a keystroke, the Units Calculator will convert an expression to conform with the metric system (SI) insofar as is possible. It converts expressions to conform with the latest specification of the Systéme international d'unitès. Although complete conversion may not always be possible (e.g., SI does not have a unit for bytes of information), it can convert most any expression to the nine base and supplementary units that make up SI. Dimensions Units Calculator understands that units represent underlying dimensional quantities. If you enter a unit's name and a question mark, the Units Calculator will tell you what it is the unit measures. It also understands deeper connections among dimensions, such as the fact that [force] is equivalent to [mass][length][time]^{2}. It uses this knowledge to check expressions and to simplify your results. It uses this knowledge to check expressions and to simplify your results. It knows over 650 units measuring 
[absorbed dose] [acceleration] [amount of substance] [angle] [angular velocity] [area] [capacitance] [change] [charge] [concentration] [conductance] [currency] [current] [current density] [density] [dimensionless] [dose equivalent] [dynamic viscosity] [electrical potential] 
[energy] [exposure] [field strength] [flow] [force] [frequency] [illuminance] [inductance] [information] [information throughput] [kinematic viscosity] [length] [luminance] [luminous flux] [luminous intensity] [magnetic field strength] [magnetic flux] [magnetic flux density] [magnetic moment] 
[magnetomotive force] [mass] [mass resistivity] [molality] [moment of inertia] [power] [power density] [pressure] [pulsatance] [radioactivity] [resistance] [temperature] [temperature interval] [thermal conductivity] [time] [torque] [velocity] [volume] [volume resistivity] 

Variables You can assign values to variables to use in later expressions. Variables are specified by any name prefixed by an atsign @. For instance, entering the assignment @sam = 10.6 m/sec gives a value to a variable with the name @sam. A special variable named @ always gets the last value computed. Sets of variables can be stored in external libraries and read into the calculator upon command. Functions Units Calculator can add, subtract, multiply, divide, exponentiate, take logs, powers, and all trigonometric functions, convert units, simplify, and compare values that you give it. It recognizes standard mathematical symbols and conventions. It supports the standard functions exp, ln, log10, abs, sgn (sign), sin, cos, tan, sct (secant), csc, ctn, asin (arc sine), acos, atan. The arguments for abs and sgn can have any units. The arguments for sin and the basic trigonometric functions must be angles (radians, degrees, etc.). Arguments for exp, ln, log10 and the inverse trigonometric functions must be dimensionless. User accessibility Aside from the SI units, all the definitions, synonyms and equivalences that the Units Calculator knows are accessible in ASCII files. You can change their spelling, enter your own nicknames for units, or define wholly new dimensions! Software is provided that checks that your changes are consistent. Cost: See Software Price List and Ordering Information .

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