Calculate X by 12noon.com
A calculator that evaluates math expressions.
- Evaluates math expressions including grouping.
- Create multiple workspaces with their own history and variables.
- Set variables including recent answer.
- Supports trigonometry and other functions.
- Converts common units of:
- Distance
- Speed
- Temperature
- Time
- Volume
- Mass
Enter simple or complex mathematical expressions and immediately calculate the result. From adding your grocery bill to calculating volume to doing your taxes, Calculate X does it all. It also converts units of distance, speed, temperature, time, volume, and mass. Create multiple workspaces with their own history and variables that are automatically saved and restored. Results are added to history, so you don't have to write them down to remember them. Those results are even saved and restored when you exit and restart the application.
Type an expression in the input field and press Enter or press the = button.
If the first character you enter in the input field is an operator (e.g., + or /), Calculate X will automatically prefix it with the "answer" variable.
answer+
Windows: Press ESC to clear the input field. Android: Tap the "x" in the input field to clear it.
Select a previous expression to copy it to the input field where you can edit it. This will also copy the result of the expression to the clipboard, so that you can paste it into another application.
You can create multiple workspaces in Calculate X. Each workspace has its own input history and variables.
You can use workspaces to separate different calculation tasks. Use one for working on your taxes, another for adding your utility bills, and another for measuring the wood to build bookcases.
Press the plus button to add a new workspace.
Press the pencil button to rename the current workspace.
Press the delete button to delete the current workspace.
| Key | Action |
|---|---|
| Ctrl+T | Create new workspace |
| Ctrl+W | Close current workspace |
| Ctrl+F4 | Close current workspace |
| Ctrl+PageUp | Select previous workspace |
| Ctrl+PageDown | Select next workspace |
| Ctrl+Shift+Tab | Select previous workspace |
| Ctrl+Tab | Select next workspace |
Select the Rename command in the overflow menu to rename the current workspace.
Select the Delete command in the overflow menu to delete the current workspace.
Calculate X supports the basic mathematical operators: addition, subtraction, multiplication, division, modulo, and exponent. You can use parentheses to group expressions and give them precedence.
- addition:
+ - subtraction:
- - multiplication:
* - division:
/ - modulo:
% - exponent:
^
Example: (3 + 4)*(5 - 2) * (sin(68) / sqrt(25)) + max(16, 7) ^ 2
You can also use algebraic (implied) multiplication in many cases:
- Between groups:
(3 + 4)(5 - 2) - Before and after groups:
-17(9 / 3)42 - Before and after functions:
23sqrt(9)ceiling(25 / 2)12 - Between groups and functions:
(4 + 3)sqrt(9)(12 / 2) - Between groups and variables:
(4 + 3)e(12 / 2) - Before variables:
4pi
You can create variables and access them in your expressions. Variables can contain letters, digits, and underscores, but they must start with a letter. All variables and their current values are displayed in a list on the right. Select a variable in the list to copy its name into the input field. This will also copy the value of the variable to the clipboard, so that you can paste it into another application.
Examples:
x = 23.68
y2 = sqrt(146)
x2y = x * y2
result = 12 + 8.4
subtotal3 = result - x2y + 87
The pi and e variables are pre-defined.
The answer variable always equals the most recent result.
Examples:
y = sin(pi / 2)
y2 = asin(2pi)
x = y + 2
x + 1
(The result is 4 and the answer variable is automatically set to 4.)
📌 If you type an operator into an empty input field, it automatically enters "answer" in the field for you.
You can clear a variable (and remove it from the variable pane) by setting it to nothing.
x =
- sqrt(n) - square root of
n - cbrt(n) - cube root of
n - abs(n) - absolute value of
n - pow(n, x) -
nto the power ofx - min(a, b) - smallest of
aandb - max(a, b) - largest of
aandb - round(d, n) -
drounded tondecimal places - truncate(d) -
dwithout decimal portion - floor(n) - largest integer smaller than
n - ceiling(n) - smallest integer larger than
n - random1() - random number
rless than 1 (0 <= r < 1) - randomN(n) - random number
rbetween 0 andn(0 <= r < n)
- cos(t) - cosine of
t - cosh(t) - hyperbolic cosine of
t - acos(t) - arccosine of
t - sin(t) - sine of
t - sinh(t) - hyperbolic sine of
t - asin(t) - arcsine of
t - tan(t) - tangent of
t - tanh(t) - hyperbolic tangent of
t - atan(t) - arctangent of
t - atanh(t) - hyperbolic arctangent of
t - atan2(x,y) - arctangent of
x/y
- exp(x) -
eto the power ofx - log(n) - log base
eofn - log10(n) - log base 10 of
n - log2(n) - log base 2 of
n
To convert between two units, use this format:
n[from->to]
Example: 80[kph->mph]
- Kilometer
km - Meter
m - Centimeter
cm - Millimeter
mm - Mile
mile - Yard
yd - Feet
ft - Inch
in
- Kilometers/hour
kph - Meters/second
m/s - Miles/hour
mph - Feet/second
ft/s - Knot
knot(nautical-miles/hour) - Mach
mach(speed of sound)
- Fahrenheit
f - Celsius
c - Kelvin
k
- Week
wk - Day
d - Hour
hr - Minute
min - Second
sec - Millisecond
ms
- Kilogram
kg - Gram
g - Milligram
mg - Ton
ton - Pound
lb - Ounce
oz
- Kiloliter
kl - Liter
l - Milliliter
ml - Gallon
gal - Quart
qt - Pint
pt - Cup
cup - Ounce
oz
Calculate X saves the workspaces in your Documents folder in a file called CalculateX.xml.
If you are familiar with XML, you can exit Calculate X and edit this file to modify, add, or remove calculations.
If you use cloud storage, such as OneDrive or DropBox, you can synchronize this file between multiple computers. At the moment, Calculate X only opens the file when it starts and does not detect changes in the file while it is running. This means it is possible that it will overwrite changes made on another computer and synchronized while it is running. Therefore, it is recommended that you close Calculate X when you are done using your computer.
The library supports mathematical expressions, functions, unit conversion, and variables.
Below are some C# examples of using the library directly.
MathEvaluator eval = new();
//basic math
double result = eval.Evaluate("(2 + 1) * (1 + 2)");
//calling a function
result = eval.Evaluate("sqrt(4)");
//evaluate trigonometric
result = eval.Evaluate("cos(pi * 45 / 180.0)");
//convert inches to feet
result = eval.Evaluate("12 [in->ft]");
//use variable
result = eval.Evaluate("answer * 10");
//add variable
eval.Variables.Add("x", 10);
result = eval.Evaluate("x * 10");This project was originally forked from Calculator.NET.