Calculators

Browse 70 Murelio browser utilities for everyday, math and engineering calculations. Open each focused tool immediately without installing software or creating an account.

• Percentage Calculator

  Calculate what percentage one value represents of a total.

• Percentage Change Calculator

  Measure the percent increase or decrease from a baseline to a new value.

• Percentage Difference Calculator

  Compare two values symmetrically as a percentage of their mean.

• Ratio Calculator

  Calculate the ratio of two values as the first value divided by the second.

• Average Calculator

  Calculate the mean and basic statistics for a list of numbers separated by commas, spaces, or new lines.

• Weighted Average Calculator

  Calculate a weighted mean from multiple value-and-weight pairs.

• Square Root Calculator

  Calculate the real principal square root of a non-negative number and show a square check.

• Cube Root Calculator

  Calculate the real cube root of positive or negative numbers.

• Power Calculator

  Raise a base to an exponent and return a finite real result.

• Logarithm Calculator

  Calculate a logarithm using a user-specified base.

• Factorial Calculator

  Calculate n! exactly as a large integer for n from 0 through 5000.

• Modulo Calculator

  Calculate a quotient truncated toward zero and its division remainder.

• Scientific Notation Calculator

  Convert a finite number to coefficient × 10^exponent and E notation.

• Absolute Value Calculator

  Return the absolute value of a real number, its distance from zero.

• Quadratic Discriminant

  Calculate the discriminant b²−4ac for the quadratic ax²+bx+c.

• Arithmetic Sequence Term

  Find the nth term of an arithmetic sequence from its first term and common difference.

• Geometric Sequence Term

  Find the nth term of a geometric sequence from its first term and common ratio.

• Arithmetic Series Sum

  Calculate the sum of the first n terms of an arithmetic sequence.

• Geometric Series Sum

  Calculate the sum of the first n terms of a geometric sequence.

• 2D Distance Calculator

  Calculate straight-line Euclidean distance between two points in a plane.

• Midpoint Calculator

  Calculate the midpoint of two 2D points and their straight-line distance.

• Slope Calculator

  Calculate the slope Δy/Δx of the line through two points.

• Circle Area Calculator

  Calculate a circle's area from its radius using πr².

• Circle Circumference Calculator

  Calculate a circle's circumference from its radius using 2πr.

• Sector Area Calculator

  Calculate the area of a circular sector from radius and central angle in degrees.

• Triangle Area Calculator

  Calculate triangle area from a base and its perpendicular height.

• Heron Triangle Area

  Use Heron's formula to calculate triangle area from three side lengths.

• Rectangle Area Calculator

  Calculate rectangle area by multiplying width and length.

• Rectangle Perimeter Calculator

  Calculate the total perimeter of a rectangle from width and length.

• Square Area Calculator

  Calculate square area from one side length.

• Trapezoid Area Calculator

  Calculate trapezoid area from two parallel sides and perpendicular height.

• Parallelogram Area Calculator

  Calculate parallelogram area from a base and its perpendicular height.

• Ellipse Area Calculator

  Calculate ellipse area from its two semi-axis lengths using πab.

• Cube Volume Calculator

  Calculate cube volume as the third power of one side length.

• Rectangular Prism Volume

  Calculate rectangular-box volume by multiplying width, length, and height.

• Sphere Volume Calculator

  Calculate sphere volume from radius using 4πr³/3.

• Sphere Surface Area

  Calculate the total surface area of a sphere from radius.

• Cylinder Volume Calculator

  Calculate cylinder volume from radius and height using πr²h.

• Cone Volume Calculator

  Calculate cone volume from base radius and perpendicular height.

• Pyramid Volume Calculator

  Calculate pyramid volume from base area and perpendicular height.

• Pythagorean Theorem Calculator

  Calculate a right triangle's hypotenuse from its two perpendicular legs.

• Law of Cosines Calculator

  Use the law of cosines to find a third side from two sides and their included angle.

• Degrees to Slope

  Convert an angle in degrees to slope percent.

• Ohm's Law Voltage

  Use Ohm's law to calculate voltage from current and resistance.

• Ohm's Law Current

  Use Ohm's law to calculate current from voltage and resistance.

• Ohm's Law Resistance

  Use voltage and current to calculate resistance R=V/I.

• Electric Power Calculator

  Calculate electrical power as voltage multiplied by current.

• Kinetic Energy Calculator

  Calculate translational kinetic energy from mass and speed.

• Potential Energy Calculator

  Calculate near-Earth gravitational potential energy mgh.

• Force Calculator

  Calculate net force from mass and acceleration using Newton's second law.

• Momentum Calculator

  Calculate linear momentum as mass times velocity.

• Wave Speed Calculator

  Calculate wave speed from frequency and wavelength using v=fλ.

• Surface Area to Volume

  Calculate a cube's surface-area-to-volume ratio as 6/s.

• PPM Solution Calculator

  Calculate parts per million as solute amount divided by total amount times one million.

• Molarity Calculator

  Calculate molarity from moles of solute and final solution volume.

• Dilution Calculator

  Calculate required final volume for a dilution using C1V1=C2V2.

• Reynolds Number

  Calculate Reynolds number from density, velocity, characteristic length, and dynamic viscosity.

• Gear Ratio Calculator

  Calculate a simple gear ratio from driven teeth divided by driver teeth.

• Mechanical Advantage

  Calculate actual mechanical advantage as output force divided by input force.

• Compression Ratio

  Calculate geometric compression ratio from swept and clearance volumes.

• Aspect Ratio Width

  Calculate width from height and a width:height aspect ratio.

• Pixel Density Calculator

  Calculate display pixels per inch from resolution and diagonal size.

• Download Time Calculator

  Estimate theoretical download time from file size and transfer speed.

• Bandwidth Calculator

  Calculate the average data rate required to move a given data size within a target time.

• Paint Calculator

  Estimate paint litres from rectangular wall area, coat count, product coverage, and waste allowance.

• Tile Calculator

  Estimate whole tile count from a rectangular surface, tile size, and waste allowance.

• Concrete Volume Calculator

  Calculate rectangular concrete volume from width, length, and thickness/height.

• Stair Riser Calculator

  Calculate basic stair dimensions from floor-to-floor rise, target riser height, and tread depth.

• Roof Pitch Calculator

  Calculate roof angle and percent grade from vertical rise and horizontal run.

• Garden Soil Calculator

  Calculate soil volume for a rectangular garden bed from width, length, and depth.