Qalculate! Manual v5.4.0
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Qalculate! Manual v5.4.0

Hanna Knutsson

This manual describes version 5.4.0 of Qalculate!.

Instructions for the command line calculator can be found in the qalc manual page.

Copyright © 2005-2007, 2016-2024 Hanna Knutsson

Feedback

To report a bug or make a suggestion regarding the Qalculate! application or this manual create a new issue at https://github.com/Qalculate/qalculate-gtk/issues.

Table of Contents

1. Introduction

2. Differences in the “new” Qt user interface

3. User Interface

Main Window
Expression Entry
Result Display
Keypad
Calculation History
Minimal Window
Menu Bar
Variable/Function/Unit Managers
Convert Number Bases Dialog

4. Expressions

Objects
Operators
Implicit Multiplication and Parsing Modes
The “to” (and “where”) operators

5. Calculator Modes

The RPN Mode

6. Propagation of Uncertainty and Interval Arithmetic

7. Variables

Variable creation/editing
Vectors and Matrices

8. Functions

Available Functions
Function creation/editing

Currency
Conversion
Unit creation/editing

10. Plotting

A. Function List

Named Integrals

Combinatorics

Complex Numbers

Date & Time

Microeconomics

Exponents & Logarithms

Circle
Cone
Cube
Cylinder
Parallelogram
Prism
Pyramid
Rectangle
Sphere
Square
Trapezoid
Triangle

Matrices & Vectors

Miscellaneous

Number Theory

Arithmetic
Integers
Number Bases
Polynomials
Prime Numbers
Rounding

Special Functions

Step Functions

Correlation
Descriptive Statistics
Distribution
Means
Moments
Random Numbers
Regression
Statistical Tests

Trigonometry

Intervals & Uncertainties

B. Variable List

Basic Constants

Date & Time

Large Numbers

Matrices & Vectors

Physical Constants

Atomic and Nuclear Constants
Conversion factors for energy equivalents
Electromagnetic Constants
Particle Mass in MeV*c^(-2)
Particle Mass in kg
Particle Mass in u
Physico-Chemical Constants
Universal Constants

Small Numbers

Special Numbers

Traditional Numbers

C. Unit List

Plane Angle
Solid Angle

Electricity

Capacitance
Electric Charge
Electric Conductance
Electric Current
Electric Dipole Moment
Electric Potential
Electric Resistance
Electrical Elastance
Inductance

Action
Entropy
Power

Dynamic Viscosity
Kinematic Viscosity
Pressure

Information

Illuminance
Luminance
Luminous Flux
Luminous Intensity

Magnetic Field Strength
Magnetic Flux
Magnetic Flux Density

Radioactivity

Absorbed Dose
Dose Equivalent
Exposure

Acceleration

Catalytic Activity

Temperature

Frequency

Cooking
Fuel Economy
Imperial Capacity
U.S. Capacity
Volumetric Flow Rate

D. Example expressions

Basic functions and operators
Units
Physical constants
Uncertainty and interval arithmetic
Algebra
Calculus
Matrices and vectors
Statistics
Time and date
Number bases

List of Figures

3.1. Main Window
3.2. Completion
3.3. Keypad
3.4. Programming keypad
3.5. Calculation History
3.6. Minimal Window
3.7. Variable Manager
3.8. Function Manager
3.9. Unit Manager
3.10. Convert Number Bases Dialog
5.1. RPN Mode
6.1. Variance Formula
7.1. Store Result
7.2. New Variable
7.3. Matrix/Vector Edit Dialog
7.4. Import CSV Dialog
8.1. Insert function dialog
8.2. Function Edit Dialog
8.3. Function Edit Dialog
9.1. Unit Conversion View
9.2. Unit Edit Dialog (General)
9.3. Unit Edit Dialog (Relation)
10.1. Plot Data
10.2. Plot Settings
10.3. Gnuplot

List of Tables

3.1. Right Keypad
3.2. Left Keypad
3.3. Programming Keypad
3.4. File Menu
3.5. New Menu
3.6. Edit Menu
3.7. Mode Menu
3.8. Functions Menu
3.9. Variables Menu
3.10. Units Menu
3.11. Help Menu
4.1. Operators
5.1. Supported Number Bases
B.1. Variables: Basic Constants
B.2. Variables: Date & Time
B.3. Variables: Large Numbers
B.4. Variables: Matrices & Vectors
B.5. Variables: Atomic and Nuclear Constants
B.6. Variables: Conversion factors for energy equivalents
B.7. Variables: Electromagnetic Constants
B.8. Variables: Particle Mass in MeV*c^(-2)
B.9. Variables: Particle Mass in kg
B.10. Variables: Particle Mass in u
B.11. Variables: Physico-Chemical Constants
B.12. Variables: Universal Constants
B.13. Variables: Small Numbers
B.14. Variables: Special Numbers
B.15. Variables: Temporary
B.16. Variables: Traditional Numbers
B.17. Variables: Unknowns
B.18. Variables: Utilities
C.1. Units: Plane Angle
C.2. Units: Solid Angle
C.3. Units: Area
C.4. Units: Currency
C.5. Units: Capacitance
C.6. Units: Electric Charge
C.7. Units: Electric Conductance
C.8. Units: Electric Current
C.9. Units: Electric Dipole Moment
C.10. Units: Electric Potential
C.11. Units: Electric Resistance
C.12. Units: Electrical Elastance
C.13. Units: Inductance
C.14. Units: Energy
C.15. Units: Action
C.16. Units: Entropy
C.17. Units: Power
C.18. Units: Force
C.19. Units: Dynamic Viscosity
C.20. Units: Kinematic Viscosity
C.21. Units: Pressure
C.22. Units: Information
C.23. Units: Length
C.24. Units: Illuminance
C.25. Units: Luminance
C.26. Units: Luminous Flux
C.27. Units: Luminous Intensity
C.28. Units: Magnetic Field Strength
C.29. Units: Magnetic Flux
C.30. Units: Magnetic Flux Density
C.31. Units: Mass
C.32. Units: Radioactivity
C.33. Units: Absorbed Dose
C.34. Units: Dose Equivalent
C.35. Units: Exposure
C.36. Units: Ratio
C.37. Units: Speed
C.38. Units: Acceleration
C.39. Units: Substance
C.40. Units: Catalytic Activity
C.41. Units: Temperature
C.42. Units: Time
C.43. Units: Frequency
C.44. Units: Typography
C.45. Units: Volume
C.46. Units: Cooking
C.47. Units: Fuel Economy
C.48. Units: Imperial Capacity
C.49. Units: U.S. Capacity
C.50. Units: Volumetric Flow Rate

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		Chapter 1. Introduction