Calculate X

The best calculator app for Android!- Multiple workspaces with their own history and variables.- History and variables are automatically saved and restored.- Evaluates math expressions including grouping.- Supports trigonometry and other functions.- Converts units of distance, speed, temperature, time, volume, and mass.
Create multiple workspaces with their own history and variables that are saved when the application exits.
Enter simple or complex mathematical expressions and immediately calculate the result.
From adding your grocery bill to calculating cosine to doing your taxes, Calculate X does it all.
Use the special variable `answer` to refer to the most recent result.
Tap a previous entry to copy it to the input field.
Results are automatically added to a history record, so you dont have to write them down to remember them.
Those results are even saved and restored when you exit and restart the application.There is also a Windows version on the Microsoft Store.Basic Mathematical OperatorsCalculate 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) ^ 2You can also use algebraic (implied) multiplication in many cases:Between groups: (3 + 4)(5 - 2)Before and after groups: -17(9 / 3)42Before and after functions: 23sqrt(9)ceiling(25 / 2)12Between groups and functions: (4 + 3)sqrt(9)(12 / 2)Between groups and variables: (4 + 3)e(12 / 2)Before variables: 4piVariablesYou 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 the list on the right.Examples:x = 23.68y2 = sqrt(146)x2y = x * y2result = 12 + 8.4subtotal3 = result - x2y + 87The 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 + 2x + 1(The result is 4 and the answer variable is automatically set to 4.)You can clear a variable (and remove it from the variables list) by setting it to nothing.x =Basic Functionssqrt(n) - square root of ncbrt(n) - cube root of nabs(n) - absolute value of npow(n, x) - n to the power of xmin(a, b) - smallest of a and bmax(a, b) - largest of a and bround(d, n) - d rounded to n decimal placestruncate(d) - d without decimal portionfloor(n) - largest integer smaller than nceiling(n) - smallest integer larger than nrandom1() - random number r less than 1 (0 <= r < 1)randomN(n) - random number r between 0 and n (0 <= r < n)Trigonometric Functionscos(t) - cosine of tcosh(t) - hyperbolic cosine of tacos(t) - arccosine of tsin(t) - sine of tsinh(t) - hyperbolic sine of tasin(t) - arcsine of ttan(t) - tangent of ttanh(t) - hyperbolic tangent of tatan(t) - arctangent of tatanh(t) - hyperbolic arctangent of tatan2(x,y) - arctangent of x/yLogarithmic Functionsexp(x) - e to the power of xlog(n) - log base e of nlog10(n) - log base 10 of nlog2(n) - log base 2 of nConversion FunctionsTo convert between two units, use this format:n[from->to]Example: 80[kph->mph]lengthKilometer kmMeter mCentimeter cmMillimeter mmMile mileYard ydFeet ftInch inspeedKilometers/hour kphMeters/second m/sMiles/hour mphFeet/second ft/sKnot knot (nautical-miles/hour)Mach mach (speed of sound)temperatureFahrenheit fCelsius cKelvin ktimeWeek wkDay dHour hrMinute minSecond secMillisecond msmassKilogram kgGram gMilligram mgTon tonPound lbOunce ozvolumeKiloliter klLiter lMilliliter mlGallon galQuart qtPint ptCup cupOunce oz