The calculator display

The main display works like a calculation worksheet. Each row has an expression area where you enter or edit a calculation, and a result area where the answer is shown. You can create more than one row, return to earlier rows, change an expression, and continue building related calculations below it.

The active row is the row that receives input from the calculator keypad. Click or tap inside a row to edit it. The result updates when the expression is evaluated.

Display-row controls

Each calculation row has its own small controls. These controls affect how that row is displayed or how it can be reused in other calculations.

a/b Fraction display

Switches supported results between decimal display and fraction-style display.

DEC A+B/C A B/C Fraction display

Switches supported results between decimal, improper fraction, and mixed-fraction display.

RAD DEG GRAD Angle mode

Controls how trigonometric functions interpret angles in that row. New rows start in radians.

Plot Plot

Opens a graph for expressions that use x. When a row can be plotted, the result area shows f(x) and the Plot button appears. Plot opens inside the same calculation row.

Embed Embedded result

Lets you insert the result of one calculation row into another expression. If the original row changes, the dependent expression updates automatically.

Plotting functions

NewCalc can plot expressions that use x as a variable. Examples include x^2, x + 1, sin(x), cos(x), and 1/x.

A plottable expression is treated as a function instead of a single numeric answer. These rows show f(x) in the result area and display a Plot button. Because f(x) is a function, not a scalar value, it cannot be embedded as a numeric result in another row.

Plot uses the row’s current angle mode. In RAD mode, trigonometric plots such as sin(x) and cos(x) use radians and usually look familiar at the default zoom. In DEG or GRAD mode, the same plot may look flat or compressed because the x-axis is interpreted in degrees or gradians. Zoom or pan the plot, or switch back to RAD, to view the usual wave shape.

Changing the angle mode changes the meaning of the expression, so an open plot for that row is cleared and can be plotted again.

Worksheet toolbar

The worksheet toolbar contains controls for editing and managing the calculation worksheet.

Copy

Copies worksheet content or the selected expression content.

Paste

Pastes compatible calculation content back into the worksheet.

Selection mode

Toggles how the left and right arrow buttons work. When selection mode is off, the arrows move the cursor left or right inside the expression. When selection mode is on, the arrows select expression content to the left or right instead of only moving the cursor.

Undo

Reverses the most recent edit.

Redo

Restores an edit that was undone.

Help

Turns on help mode. After clicking the question mark, click a calculator key to see help for that key.

Settings

Opens display and notation options for the calculator.

Print

Opens the print view for the current worksheet.

Keyboard control

Controls the phone or tablet keyboard while editing expressions. The calculator already has its own calculator keypad, so this button helps prevent the device’s native keyboard from opening and covering the calculator.

Settings

The settings dialog changes how some parts of the calculator are displayed. These settings are mainly notation and display preferences; they do not change the mathematical meaning of the calculations.

Buttons

Choose between color-coded calculator keys and gray-scale keys.

Text Size

Make calculator text smaller or larger.

Arithmetic

Choose how logarithm buttons are labeled, such as LN or Log_e.

Trigonometry

Choose how inverse trigonometric functions are labeled, such as asin or sin^-1.

Matrix

Changes how selected matrix buttons are labeled. Use [A] for bracket-style matrix notation or |A| for determinant-style notation.

Keypad tabs

The calculator keypad is divided into tabs so that advanced functions do not crowd the main keypad. Use the tabs to switch between arithmetic, trigonometry, statistics and probability, matrices, and constants.

Arithmetic

The Arithmetic tab contains common mathematical operations such as powers, roots, logarithms, absolute value, factorial, rounding, least common multiple, greatest common divisor, and related functions.

Trigonometry

The Trigonometry tab contains trigonometric, inverse trigonometric, and hyperbolic functions. The selected angle mode controls how angle-based functions are interpreted.

Statistics and Probability

The Sta/Prb tab contains statistical and probability functions. Statistics functions include tools such as sum, mean, median, mode, standard deviation, variance, minimum, maximum, and cumulative sum. Probability functions include combinations, permutations, gamma functions, random integers, multinomial coefficients, and related functions.

Matrices

The Matrix tab contains matrix templates and matrix operations. You can insert common matrix shapes, add rows or columns, and use operations such as determinant, transpose, inverse, identity, trace, size, sort, flatten, and Kronecker product.

Matrix entry is different from ordinary number entry because the expression contains rows and columns. After inserting a matrix template, fill in each cell and use the matrix controls to adjust or calculate with the matrix.

Constants

The Constants tab opens the scientific constants browser. Constants can be searched by name or browsed by category, including Most common, Atomic-nuclear, Electromagnetic, Physico-Chemical, Universal, and X-Ray constants.

Selecting a constant displays its name, numerical value, unit, uncertainty value, and relative uncertainty when available. Use the insert buttons to place the constant value, uncertainty, or relative uncertainty directly into the active expression at the cursor.

The constants browser is useful for physics, chemistry, engineering, and scientific calculations where reference values, units, and uncertainty information matter.

Built-in button help

The calculator includes help for individual calculator keys. Click the question mark button to enter help mode, then click any calculator key. The help dialog shows the key name, description, and examples. Use the Previous and Next controls in the help dialog to browse nearby functions.