Converters & Calculators

Use a familiar button calculator for arithmetic, parentheses, percentages, memory, keyboard input, and calculation history.

Evaluate scientific expressions with powers, roots, logarithms, trigonometry, constants, angle modes, memory, and history.

Solve linear and quadratic equations or a two-variable linear system, including real and complex quadratic roots.

Add, subtract, multiply, or divide two fractions and receive a reduced fraction and decimal result.

Calculate matrix addition, subtraction, multiplication, determinant, inverse, transpose, and reduced row echelon form for matrices up to 4 by 4.

Solve ax² + bx + c = 0 and inspect the discriminant, roots, and parabola vertex.

Solve one missing value in A:B = C:D by leaving exactly one input blank.

Calculate an arithmetic or weighted average from a list of values.

Analyze a numeric dataset with descriptive statistics and optionally calculate a two-variable linear regression.

Calculate the sale price after a percentage discount.

Estimate monthly loan payments and total interest. For planning only.

Calculate a tip and split a bill between people.

Calculate age in years, months, and days from a birth date.

Find the number of days between two dates.

Choose participant locations on the map and find meeting times inside everyone's selected work hours and weekdays.

Choose any map locations and compare the same 24-hour period, work hours, and calendar-day changes.

Choose any locations on the map and convert a local date and time with daylight-saving and date changes handled automatically.

Convert Unix timestamps and readable dates in your browser.

Click anywhere on an interactive world map and compare live local dates, times, UTC offsets, and simple day or night status.

Calculate matching image or video dimensions for an aspect ratio.

Convert length, weight, temperature, area, volume, speed, and data storage units.

Calculate body mass index using metric measurements.

Calculate percentages, percentage change, and percentage of a number.

Generate random integers in a chosen range.