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GeezerVison is showing mathparser.org — Built-in Units - mXparser - Math Expressions Parser for JAVA, C#, C++, Kotlin, Android, .NET/MONO/Xamarin - Mathematical Formula Parser / Evaluator Library

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The tutorial consists of more than 200 live examples from 50 sections given separately for JAVA, C# and C++. Each of the examples can be copied and run on your own environment. In addition, mXparser provides an extensive collection of over 500 built-in math functions, expressions and symbols. Familiarize yourself with the scope and the syntax. Live testing is the best way to learn. Good luck! 🙂

Tutorial Math Collection API spec Download

Below is the code for JAVA, C# (the code for C# is almost identical) and C++. To copy the code, double-click inside the frame.

Case 1: Units of length / distance

Java/C# code

// JAVA: import org.mariuszgromada.math.mxparser.*;
// C#: using org.mariuszgromada.math.mxparser;
// ...
Expression e = new Expression("( 95*[cm] + 200*[m] + 1*[km] ) / [km]");
mXparser.consolePrintln("Res: " + e.getExpressionString() + " = " + e.calculate() );

C++ code

#include "org/mariuszgromada/math/mxparser.hpp"
// ...
ExpressionPtr e = new_Expression("( 95*[cm] + 200*[m] + 1*[km] ) / [km]");
mXparser::consolePrintln("Res: " + e->getExpressionString() + " = " + e->calculate() );

Code result

[mXparser-v.5.2.1] Res: ( 95*[cm] + 200*[m] + 1*[km] ) / [km] = 1.20095

Case 2: Units of time

Java/C# code

// JAVA: import org.mariuszgromada.math.mxparser.*;
// C#: using org.mariuszgromada.math.mxparser;
// ...
Expression e = new Expression("( 60*[min] + 2*[h] ) / [h]");
mXparser.consolePrintln("Res: " + e.getExpressionString() + " = " + e.calculate() );

C++ code

#include "org/mariuszgromada/math/mxparser.hpp"
// ...
ExpressionPtr e = new_Expression("( 60*[min] + 2*[h] ) / [h]");
mXparser::consolePrintln("Res: " + e->getExpressionString() + " = " + e->calculate() );

Code result

[mXparser-v.5.2.1] Res: ( 60*[min] + 2*[h] ) / [h] = 3.0

Case 3: Units of information

Java/C# code

// JAVA: import org.mariuszgromada.math.mxparser.*;
// C#: using org.mariuszgromada.math.mxparser;
// ...
Expression e = new Expression("8*[Mb] / [MB]");
mXparser.consolePrintln("Res: " + e.getExpressionString() + " = " + e.calculate() );

C++ code

#include "org/mariuszgromada/math/mxparser.hpp"
// ...
ExpressionPtr e = new_Expression("8*[Mb] / [MB]");
mXparser::consolePrintln("Res: " + e->getExpressionString() + " = " + e->calculate() );

Code result

[mXparser-v.5.2.1] Res: 8*[Mb] / [MB] = 1.0

Case 4: Units of volume

Java/C# code

// JAVA: import org.mariuszgromada.math.mxparser.*;
// C#: using org.mariuszgromada.math.mxparser;
// ...
Expression e = new Expression("2000*[l] / [m3]");
mXparser.consolePrintln("Res: " + e.getExpressionString() + " = " + e.calculate() );

C++ code

#include "org/mariuszgromada/math/mxparser.hpp"
// ...
ExpressionPtr e = new_Expression("2000*[l] / [m3]");
mXparser::consolePrintln("Res: " + e->getExpressionString() + " = " + e->calculate() );

Code result

[mXparser-v.5.2.1] Res: 2000*[l] / [m3] = 2.0

Case 5: Express 4 feet in inches

Java/C# code

// JAVA: import org.mariuszgromada.math.mxparser.*;
// C#: using org.mariuszgromada.math.mxparser;
// ...
Expression e = new Expression("4[ft]/[inch]");
mXparser.consolePrintln(e.getExpressionString() + " = " + e.calculate());

C++ code

#include "org/mariuszgromada/math/mxparser.hpp"
// ...
ExpressionPtr e = new_Expression("4[ft]/[inch]");
mXparser::consolePrintln(e->getExpressionString() + " = " + e->calculate());

Code result

[mXparser-v.5.2.1] 4[ft]/[inch] = 48.0

Case 6: Express in square kilometers the area of a rectangle measuring 100 meters by 2 kilometers

Java/C# code

// JAVA: import org.mariuszgromada.math.mxparser.*;
// C#: using org.mariuszgromada.math.mxparser;
// ...
Expression e = new Expression("100[m] * 2[km] / [km2]");
mXparser.consolePrintln(e.getExpressionString() + " = " + e.calculate());

C++ code

#include "org/mariuszgromada/math/mxparser.hpp"
// ...
ExpressionPtr e = new_Expression("100[m] * 2[km] / [km2]");
mXparser::consolePrintln(e->getExpressionString() + " = " + e->calculate());

Code result

[mXparser-v.5.2.1] 100[m] * 2[km] / [km2] = 0.2

Case 7: List of supported units

Java/C# code

// JAVA: import org.mariuszgromada.math.mxparser.*;
// C#: using org.mariuszgromada.math.mxparser;
// ...
mXparser.consolePrintHelp("type=unit");

C++ code

#include "org/mariuszgromada/math/mxparser.hpp"
// ...
mXparser::consolePrintHelp("type=unit");

Code result

[mXparser-v.5.2.1] Help content limited to query: 'type=unit'
  #  Keyword             Type                    Syntax                                        Since Description
  -  --------            ----                    ------                                        ----- -----------
  1. [%]                 &lt;Unit>                  [%]                                           4.0   Percentage - Ratio / Fraction = 0.01 - Dimensionless unit
  2. [%%]                &lt;Unit>                  [%%]                                          4.0   Promil, Per mille - Ratio / Fraction = 0.001 - Dimensionless unit
  3. [Y]                 &lt;Unit>                  [Y]                                           4.0   Septillion / Yotta - Metric prefix = 10²⁴ - Dimensionless unit
  4. [sept]              &lt;Unit>                  [sept]                                        4.0   Septillion / Yotta - Metric prefix = 10²⁴ - Dimensionless unit
  5. [Z]                 &lt;Unit>                  [Z]                                           4.0   Sextillion / Zetta - Metric prefix = 10²¹ - Dimensionless unit
  6. [sext]              &lt;Unit>                  [sext]                                        4.0   Sextillion / Zetta - Metric prefix = 10²¹ - Dimensionless unit
  7. [E]                 &lt;Unit>                  [E]                                           4.0   Quintillion / Exa - Metric prefix = 10¹⁸ - Dimensionless unit
  8. [quint]             &lt;Unit>                  [quint]                                       4.0   Quintillion / Exa - Metric prefix = 10¹⁸ - Dimensionless unit
  9. [P]                 &lt;Unit>                  [P]                                           4.0   Quadrillion / Peta - Metric prefix = 10¹⁵ - Dimensionless unit
 10. [quad]              &lt;Unit>                  [quad]                                        4.0   Quadrillion / Peta - Metric prefix = 10¹⁵ - Dimensionless unit
 11. [T]                 &lt;Unit>                  [T]                                           4.0   Trillion / Tera - Metric prefix = 10¹² - Dimensionless unit
 12. [tril]              &lt;Unit>                  [tril]                                        4.0   Trillion / Tera - Metric prefix = 10¹² - Dimensionless unit
 13. [G]                 &lt;Unit>                  [G]                                           4.0   Billion / Giga - Metric prefix = 10⁹ - Dimensionless unit
 14. [bil]               &lt;Unit>                  [bil]                                         4.0   Billion / Giga - Metric prefix = 10⁹ - Dimensionless unit
 15. [M]                 &lt;Unit>                  [M]                                           4.0   Million / Mega - Metric prefix = 10⁶ - Dimensionless unit
 16. [mil]               &lt;Unit>                  [mil]                                         4.0   Million / Mega - Metric prefix = 10⁶ - Dimensionless unit
 17. [k]                 &lt;Unit>                  [k]                                           4.0   Thousand / Kilo - Metric prefix = 10³ - Dimensionless unit
 18. [th]                &lt;Unit>                  [th]                                          4.0   Thousand / Kilo - Metric prefix = 10³ - Dimensionless unit
 19. [hund]              &lt;Unit>                  [hund]                                        4.0   Hundred / Hecto - Metric prefix = 10² - Dimensionless unit
 20. [hecto]             &lt;Unit>                  [hecto]                                       4.0   Hundred / Hecto - Metric prefix = 10² - Dimensionless unit
 21. [ten]               &lt;Unit>                  [ten]                                         4.0   Ten / Deca - Metric prefix = 10 - Dimensionless unit
 22. [deca]              &lt;Unit>                  [deca]                                        4.0   Ten / Deca - Metric prefix = 10 - Dimensionless unit
 23. [deci]              &lt;Unit>                  [deci]                                        4.0   Tenth / Deci - Metric prefix = 10⁻¹ - Dimensionless unit
 24. [centi]             &lt;Unit>                  [centi]                                       4.0   Hundredth / Centi - Metric prefix = 10⁻² - Dimensionless unit
 25. [milli]             &lt;Unit>                  [milli]                                       4.0   Thousandth / Milli - Metric prefix = 10⁻³ - Dimensionless unit
 26. [mic]               &lt;Unit>                  [mic]                                         4.0   Millionth / Micro - Metric prefix = 10⁻⁶ - Dimensionless unit
 27. [n]                 &lt;Unit>                  [n]                                           4.0   Billionth / Nano - Metric prefix = 10⁻⁹ - Dimensionless unit
 28. [p]                 &lt;Unit>                  [p]                                           4.0   Trillionth / Pico - Metric prefix = 10⁻¹² - Dimensionless unit
 29. [f]                 &lt;Unit>                  [f]                                           4.0   Quadrillionth / Femto - Metric prefix = 10⁻¹⁵ - Dimensionless unit
 30. [a]                 &lt;Unit>                  [a]                                           4.0   Quintillionth / Atoo - Metric prefix = 10⁻¹⁸ - Dimensionless unit
 31. [z]                 &lt;Unit>                  [z]                                           4.0   Sextillionth / Zepto - Metric prefix = 10⁻²¹ - Dimensionless unit
 32. [y]                 &lt;Unit>                  [y]                                           4.0   Septillionth / Yocto - Metric prefix = 10⁻²⁴ - Dimensionless unit
 33. [m]                 &lt;Unit>                  [m]                                           4.0   Meter - Unit of length [m] (m=1) - Unit
 34. [km]                &lt;Unit>                  [km]                                          4.0   Kilometer - Unit of length [m] (m=1) - Unit
 35. [cm]                &lt;Unit>                  [cm]                                          4.0   Centimeter - Unit of length [m] (m=1) - Unit
 36. [mm]                &lt;Unit>                  [mm]                                          4.0   Millimeter - Unit of length [m] (m=1) - Unit
 37. [inch]              &lt;Unit>                  [inch]                                        4.0   Inch - Unit of length [m] (m=1) - Unit
 38. [yd]                &lt;Unit>                  [yd]                                          4.0   Yard - Unit of length [m] (m=1) - Unit
 39. [ft]                &lt;Unit>                  [ft]                                          4.0   Feet - Unit of length [m] (m=1) - Unit
 40. [mile]              &lt;Unit>                  [mile]                                        4.0   Mile - Unit of length [m] (m=1) - Unit
 41. [nmi]               &lt;Unit>                  [nmi]                                         4.0   Nautical mile - Unit of length [m] (m=1) - Unit
 42. [m2]                &lt;Unit>                  [m2]                                          4.0   Square meter - Unit of area [m²] (m=1) - Unit
 43. [cm2]               &lt;Unit>                  [cm2]                                         4.0   Square centimeter - Unit of area [m²] (m=1) - Unit
 44. [mm2]               &lt;Unit>                  [mm2]                                         4.0   Square millimeter - Unit of area [m²] (m=1) - Unit
 45. [are]               &lt;Unit>                  [are]                                         4.0   Are - Unit of area [m²] (m=1) - Unit
 46. [ha]                &lt;Unit>                  [ha]                                          4.0   Hectare - Unit of area [m²] (m=1) - Unit
 47. [acre]              &lt;Unit>                  [acre]                                        4.0   Acre - Unit of area [m²] (m=1) - Unit
 48. [km2]               &lt;Unit>                  [km2]                                         4.0   Square kilometer - Unit of area [m²] (m=1) - Unit
 49. [mm3]               &lt;Unit>                  [mm3]                                         4.0   Cubic millimeter - Unit of volume [m³] (m=1) - Unit
 50. [cm3]               &lt;Unit>                  [cm3]                                         4.0   Cubic centimeter - Unit of volume [m³] (m=1) - Unit
 51. [m3]                &lt;Unit>                  [m3]                                          4.0   Cubic meter - Unit of volume [m³] (m=1) - Unit
 52. [km3]               &lt;Unit>                  [km3]                                         4.0   Cubic kilometer - Unit of volume [m³] (m=1) - Unit
 53. [ml]                &lt;Unit>                  [ml]                                          4.0   Milliliter - Unit of volume [m³] (m=1) - Unit
 54. [l]                 &lt;Unit>                  [l]                                           4.0   Liter - Unit of volume [m³] (m=1) - Unit
 55. [gall]              &lt;Unit>                  [gall]                                        4.0   Gallon - Unit of volume [m³] (m=1) - Unit
 56. [pint]              &lt;Unit>                  [pint]                                        4.0   Pint - Unit of volume [m³] (m=1) - Unit
 57. [s]                 &lt;Unit>                  [s]                                           4.0   Second - Unit of time [s] (s=1) - Unit
 58. [ms]                &lt;Unit>                  [ms]                                          4.0   Millisecond - Unit of time [s] (s=1) - Unit
 59. [min]               &lt;Unit>                  [min]                                         4.0   Minute - Unit of time [s] (s=1) - Unit
 60. [h]                 &lt;Unit>                  [h]                                           4.0   Hour - Unit of time [s] (s=1) - Unit
 61. [day]               &lt;Unit>                  [day]                                         4.0   Day - Unit of time [s] (s=1) - Unit
 62. [week]              &lt;Unit>                  [week]                                        4.0   Week - Unit of time [s] (s=1) - Unit
 63. [yearj]             &lt;Unit>                  [yearj]                                       4.0   Julian year = 365.25 days - Unit of time [s] (s=1) - Unit
 64. [kg]                &lt;Unit>                  [kg]                                          4.0   Kilogram - Unit of mass [kg] (kg=1) - Unit
 65. [gr]                &lt;Unit>                  [gr]                                          4.0   Gram - Unit of mass [kg] (kg=1) - Unit
 66. [mg]                &lt;Unit>                  [mg]                                          4.0   Milligram - Unit of mass [kg] (kg=1) - Unit
 67. [dag]               &lt;Unit>                  [dag]                                         4.0   Decagram - Unit of mass [kg] (kg=1) - Unit
 68. [t]                 &lt;Unit>                  [t]                                           4.0   Tonne - Unit of mass [kg] (kg=1) - Unit
 69. [oz]                &lt;Unit>                  [oz]                                          4.0   Ounce - Unit of mass [kg] (kg=1) - Unit
 70. [lb]                &lt;Unit>                  [lb]                                          4.0   Pound - Unit of mass [kg] (kg=1) - Unit
 71. [b]                 &lt;Unit>                  [b]                                           4.0   Bit - Unit of information [bit] (bit=1) - Unit
 72. [kb]                &lt;Unit>                  [kb]                                          4.0   Kilobit - Unit of information [bit] (bit=1) - Unit
 73. [Mb]                &lt;Unit>                  [Mb]                                          4.0   Megabit - Unit of information [bit] (bit=1) - Unit
 74. [Gb]                &lt;Unit>                  [Gb]                                          4.0   Gigabit - Unit of information [bit] (bit=1) - Unit
 75. [Tb]                &lt;Unit>                  [Tb]                                          4.0   Terabit - Unit of information [bit] (bit=1) - Unit
 76. [Pb]                &lt;Unit>                  [Pb]                                          4.0   Petabit - Unit of information [bit] (bit=1) - Unit
 77. [Eb]                &lt;Unit>                  [Eb]                                          4.0   Exabit - Unit of information [bit] (bit=1) - Unit
 78. [Zb]                &lt;Unit>                  [Zb]                                          4.0   Zettabit - Unit of information [bit] (bit=1) - Unit
 79. [Yb]                &lt;Unit>                  [Yb]                                          4.0   Yottabit - Unit of information [bit] (bit=1) - Unit
 80. [B]                 &lt;Unit>                  [B]                                           4.0   Byte - Unit of information [bit] (bit=1) - Unit
 81. [kB]                &lt;Unit>                  [kB]                                          4.0   Kilobyte - Unit of information [bit] (bit=1) - Unit
 82. [MB]                &lt;Unit>                  [MB]                                          4.0   Megabyte - Unit of information [bit] (bit=1) - Unit
 83. [GB]                &lt;Unit>                  [GB]                                          4.0   Gigabyte - Unit of information [bit] (bit=1) - Unit
 84. [TB]                &lt;Unit>                  [TB]                                          4.0   Terabyte - Unit of information [bit] (bit=1) - Unit
 85. [PB]                &lt;Unit>                  [PB]                                          4.0   Petabyte - Unit of information [bit] (bit=1) - Unit
 86. [EB]                &lt;Unit>                  [EB]                                          4.0   Exabyte - Unit of information [bit] (bit=1) - Unit
 87. [ZB]                &lt;Unit>                  [ZB]                                          4.0   Zettabyte - Unit of information [bit] (bit=1) - Unit
 88. [YB]                &lt;Unit>                  [YB]                                          4.0   Yottabyte - Unit of information [bit] (bit=1) - Unit
 89. [J]                 &lt;Unit>                  [J]                                           4.0   Joule - Unit of energy [J] (m=1, kg=1, s=1) - Unit
 90. [eV]                &lt;Unit>                  [eV]                                          4.0   Electronovolt - Unit of energy [J] (m=1, kg=1, s=1) - Unit
 91. [keV]               &lt;Unit>                  [keV]                                         4.0   Kiloelectronovolt - Unit of energy [J] (m=1, kg=1, s=1) - Unit
 92. [MeV]               &lt;Unit>                  [MeV]                                         4.0   Megaelectronovolt - Unit of energy [J] (m=1, kg=1, s=1) - Unit
 93. [GeV]               &lt;Unit>                  [GeV]                                         4.0   Gigaelectronovolt - Unit of energy [J] (m=1, kg=1, s=1) - Unit
 94. [TeV]               &lt;Unit>                  [TeV]                                         4.0   Teraelectronovolt - Unit of energy [J] (m=1, kg=1, s=1) - Unit
 95. [m/s]               &lt;Unit>                  [m/s]                                         4.0   Meter per second - Unit of speed [m/s] (m=1, s=1) - Unit
 96. [km/h]              &lt;Unit>                  [km/h]                                        4.0   Kilometer per hour - Unit of speed [m/s] (m=1, s=1) - Unit
 97. [mi/h]              &lt;Unit>                  [mi/h]                                        4.0   Mile per hour - Unit of speed [m/s] (m=1, s=1) - Unit
 98. [knot]              &lt;Unit>                  [knot]                                        4.0   Knot - Unit of speed [m/s] (m=1, s=1) - Unit
 99. [m/s2]              &lt;Unit>                  [m/s2]                                        4.0   Meter per square second - Unit of acceleration [m/s²] (m=1, s=1) - Unit
100. [km/h2]             &lt;Unit>                  [km/h2]                                       4.0   Kilometer per square hour - Unit of acceleration [m/s²] (m=1, s=1) - Unit
101. [mi/h2]             &lt;Unit>                  [mi/h2]                                       4.0   Mile per square hour - Unit of acceleration [m/s²] (m=1, s=1) - Unit
102. [rad]               &lt;Unit>                  [rad]                                         4.0   Radian - Unit of angle [rad] (rad=1) - Unit
103. [deg]               &lt;Unit>                  [deg]                                         4.0   Degree of arc - Unit of angle [rad] (rad=1) - Unit
104. [']                 &lt;Unit>                  [']                                           4.0   Minute of arc - Unit of angle [rad] (rad=1) - Unit
105. ['']                &lt;Unit>                  ['']                                          4.0   Second of arc - Unit of angle [rad] (rad=1) - Unit
[mXparser-v.5.2.1]

Nuget – Package Manager (C#, F#, Visual Basic, …)

Install-Package MathParser.org-mXparser-Version 6.1.2

Nuget – .NET CLI

dotnet add package MathParser.org-mXparser--version 6.1.2

Nuget – Package Reference

<PackageReference Include="MathParser.org-mXparser"Version="6.1.2"/>

Maven – Dependency (Java, Kotlin, Scala, Groovy, …)

<dependency> <groupid>org.mariuszgromada.math</groupid> <artifactid>MathParser.org-mXparser</artifactid> <version>6.1.2</version> </dependency>

Maven – Gradle

implementation 'org.mariuszgromada.math:MathParser.org-mXparser:6.1.2'

CMake – Dependency / FetchContent (C++, MSVC, LLVM/Clang, GNU/GCC, MinGW, MSYS2, WSL, Windows, Linux, Unix, MacOS)

include(FetchContent) FetchContent_Declare(MathParserOrgMxParserGIT_REPOSITORYhttps://github.com/mariuszgromada/MathParser.org-mXparser.gitGIT_TAGv.6.1.2SOURCE_SUBDIR CURRENT/cpp/lib ) FetchContent_MakeAvailable(MathParserOrgMxParser) mxparser_link(YourExecutable)

GitHub

git clone https://github.com/mariuszgromada/MathParser.org-mXparser

OTHER DOWNLOAD OPTIONS

Download latest release – v.6.1.0 Sagitara: .NET bin only Download latest release – v.6.1.0 Sagitara: JAVA bin only Download latest release – v.6.1.0 Sagitara: bin + doc

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SOURCE CODE

Source code .zip Source code .tar.gz
View on GitHub MathSpace.pl

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