# General Calculator

TheFreeWindows General Calculator is a free service, that will let you perform various mathematical operations and measure conversions.

Enter an arithmetic expression:

Result:

 Save expression (new or copy current): Memory:

 Formulas, Areas and Volumes: 1  Formulas The x% Add x% Subtract x% Square root of x Raise x to power y Inversion +/- Round x to nearest enteger Greatest integer less than or equal to x Smallest integer greater than or equal to x Random number, including 0 to less than 1 Random number from 1 to x PI constant (3.14159...) Cνrcle, circumference Circle, area Cylinder, side area Cylinder, volume Sphere, area Sphere, volume Square/rectangle, area Cube/parallelepiped, volume Triangle, area Pyramid, volume Cone, side area Cone, volume Sector, area Ellipse, area Rhombus, area Natural logarithm of x Sine of x Cosine of x Tangent of x Arcsine of x Arcsine of x Arctangent of x Measures conversion: 2  Length astronomic units to km cm to feet cm to inches feet to cm feet to miles feet to mt inches to cm inches to mm km to miles km to nautic miles miles to feet miles to km miles to nautic miles mm to inches mt to feet mt to yards nautic miles to km nautic miles to miles yards to miles yards to mt year light to km     3  Area acres to feet2 acres to hectares acres to miles2 cm2 to inches2 feet2 to mt2 hectares to acres hectares to miles2 inches2 to cm2 km2 to miles2 miles2 to acres miles2 to hectares miles2 to km2 mt2 to feet2 mt2 to yards2 yards2 to mt2 4  Weight carat to gr dynes to gr gr to carat gr to dynes gr to grains gr to ounces (avoir) gr to pounds grains to gr kg to pounds kg to tons UK long kg to tons US short ounces (avoir) to gr ounces (avoir) to pounds pounds to kg pounds to ounces (avoir) tonnes mt to kg tonnes mt to tons UK long tonnes mt to tons US short tons UK long to kg tons UK long to pounds tons UK long to tonnes mt tons US short to kg tons US short to pounds tons US short to tonnes mt     5  Capacity barrels (oil) to lt bushels UK to lt bushels US to lt fld ounces UK to lt fld ounces US to lt gallons UK to lt gallons US liq. to lt lt to barrels (oil) lt to bushels UK lt to bushels US lt to fld ounces UK lt to fld ounces US lt to gallons UK lt to gallons US liq. lt to pints UK lt to pints US liq. lt to quarts UK lt to quarts US liq. pints UK to lt pints US liq. to lt quarts UK to lt quarts US liq. to lt 6  Volume cm3 to inches3 feet3 to mt3 inches3 to cm3 mt3 to feet3 mt3 to yards3 yards3 to mt3     7  Other ampere/h to coulomb atmospheres to bars atmospheres to cm of merc. bars to atmospheres bars to cm of merc. bars to kg/cm2 bars to pounds/inches2 (psi) bit to byte Btu/h to horsepower (elec) Btu/h to horsepower (mt) Btu/h to watts byte to bit cal to colorie (food) cal to watts sec cm of merc. to atmosphere cm of merc. to bars degrees to radians feet/sec to miles/h gallons UK/min to lt/min gallons US/min to lt/min horsepower (elec) to Btu/h horsepower (mt) to Btu/h horsepower to watts (elec) horsepower to watts (mt) hours to days kg/cm2 to bars kg/cm2 to pounds/inch2 (psi) kg/lt to pounds/gallon kg/mt3 to pounds/foot3 km/h to knots km/h to miles/h knots to km/h knots to nautic miles/h knots to miles/h light to km/h lux to lumens/mt2 lux to lumens/foot2 match (sea l.) to km/h miles/h to km/h miles/h to knots mt3/h to gallons UK/min mt3/h to gallons US/min pounds/foot3 to kg/mt3 pounds/gallon to kg/lt pounds/inch2 (psi) to bars pounds/inch2 (psi) to kg/cm2 radians to degrees watts to Btu/h watts (elec) to horsepower watts (mt) to horsepower Convert Temperature, Calculate Percentages

 Rule of Three: A is to B as C is to D

 Instructions Add: +, Subtract: -, Multiply: *, Divide: /, Remainder: %. Precedence: (), *, /, %, +, -. Decimal: . point Examples Expression: (1+2.5+3)*5-(7/3) Result: 30.1666... 6 * 9 % 7 Result: 5 6 * (9 % 7) Result: 12 Sphere volume, with given radius: (4/3)*Math.PI*Math.pow(radius,3) Random number from 1 to 100: Math.floor(Math.random()*100+1)