Average Rate of Change Calculator

Find the slope between two points.

Circle Calculator

Calculate circle diameter, circumference, and area.

Complex Number Calculator

Add, subtract, multiply, and divide complex numbers.

Concrete Calculator

Estimate concrete volume and 80 lb bags.

Cone Calculator

Calculate cone slant height, surface area, and volume.

Confidence Interval Calculator

Estimate a confidence interval for a sample mean with z or t assumptions.

Cube Calculator

Calculate cube volume, surface area, and diagonals from one edge.

Cubic Yards Calculator

Convert project dimensions into cubic yards.

Derivative Power Rule Calculator

Apply the power rule and evaluate the derivative.

Determinant Calculator

Calculate a square matrix determinant with elimination steps.

Distance Formula Calculator

Find the distance between two points.

Eigenvalues Calculator

Find eigenvalues and eigenvectors for small square matrices.

Exponent Calculator

Raise a base to any exponent.

Fraction Calculator

Add, subtract, multiply, and divide two fractions.

GCF LCM Calculator

Find greatest common factor and least common multiple.

Gravel Calculator

Estimate gravel volume, tons, and material cost.

Integral Power Rule Calculator

Apply the power rule for integrals and evaluate a definite integral.

Limit Evaluator

Evaluate a simple function at a point.

Linear Equation Solver

Solve y = mx + b for a chosen x value.

Linear Regression Calculator

Fit a best-fit line to pasted points.

Logarithm Calculator

Calculate logarithms with any positive base.

Matrix Calculator

Edit two matrices and inspect common linear algebra operations.

Mean, Median, Mode, and Sum Calculator

Find the mean, median, mode, sum, minimum, and maximum from a pasted list of numbers.

Midpoint Formula Calculator

Find the midpoint between two points.

Modulo Calculator

Find quotient and remainder after division.

Mulch Calculator

Estimate mulch volume, bags, and cost.

P-Value Calculator

Find one-tailed or two-tailed p-values from a z or t statistic.

Parallelogram Calculator

Calculate parallelogram area, perimeter, height, and diagonals.

Percentage Calculator

Calculate percent-of, percent share, and percent changes.

Percentile Calculator

Find a percentile value from a number list and show the sorted interpolation.

Permutation Combination Calculator

Calculate nPr and nCr.

Polygon Calculator

Calculate area and perimeter from polygon vertices.

Polynomial Evaluator

Evaluate ax^3 + bx^2 + cx + d at x.

Prime Factorization Calculator

Break an integer into prime factors.

Probability Calculator

Calculate probability and odds from outcomes.

Programmer Calculator

Use a keypad calculator for binary, decimal, hexadecimal, and bitwise math.

Pyramid Calculator

Calculate square pyramid area, surface area, and volume.

Quadratic Formula Calculator

Solve ax^2 + bx + c with the quadratic formula.

Quartile Calculator

Find quartiles, median, and interquartile range with selectable methods.

Ratio Calculator

Simplify a ratio and scale it to an equivalent value.

Rectangle Calculator

Calculate rectangle area, perimeter, and diagonal.

Rectangular Prism Calculator

Calculate rectangular prism volume, surface area, and space diagonal.

Regular Polygon Calculator

Calculate perimeter, area, and interior angle for a regular polygon.

Rhombus Calculator

Calculate rhombus area, perimeter, height, and diagonals.

Right Triangle Calculator

Solve hypotenuse, area, perimeter, and angle from two legs.

Right Triangle Solver

Solve a right triangle from one known side and one acute angle.

Rounding Calculator

Round a number to decimal places or a custom increment.

Scientific Calculator

Use a keypad calculator for powers, roots, trigonometry, logarithms, and constants.

Scientific Notation Calculator

Convert a number into scientific notation.

Significant Figures Calculator

Count and round significant figures.

Slope Calculator

Calculate slope percent, angle, and rise-run ratio.

Sphere Calculator

Calculate sphere surface area and volume.

Square Calculator

Calculate square area, perimeter, and diagonal from one side.

Square Root Calculator

Calculate the square root of a non-negative number.

Standard Calculator

Use a simple keypad calculator for everyday arithmetic.

Standard Deviation Calculator

Calculate mean, variance, and standard deviation from a list of values.

System of Equations Calculator

Solve an augmented matrix and classify the solution set.

System of Two Equations Calculator

Find the intersection point for two lines.

Tank Volume Calculator

Calculate cylindrical tank volume.

Tire Size Calculator

Calculate tire diameter, circumference, and revs per mile.

Trapezoid Calculator

Calculate trapezoid area, perimeter, midline, and base angles.

Triangle Calculator

Calculate triangle perimeter and area from three sides.

Triangular Prism Calculator

Calculate triangular prism area, surface area, and volume from three sides.

Z Score Calculator

Calculate how many standard deviations a value is from the mean.

Date Difference Calculator

Find the exact span between two calendar dates.

Add / Subtract Time Calculator

Add or subtract days, hours, minutes, and seconds from a date and time.

Timezone Comparison Calculator

Compare the same moment across two timezones.

Work Hours Calculator

Calculate daily and weekly work hours with breaks, overtime, and pay.

Time Duration Calculator

Convert hours, minutes, and seconds into total duration units.

Age Calculator

Calculate age, total days lived, and days until the next birthday.

Loan Payment Calculator

Estimate the monthly payment, total repayment, and total interest for a fixed-rate loan.

Mortgage Calculator

Estimate a mortgage payment with taxes, insurance, and HOA costs.

Compound Interest Calculator

Project savings or investment growth with monthly contributions.

Tip Calculator

Calculate a tip, total bill, and split amount per person.

Standard Calculator

Use a simple keypad calculator for everyday arithmetic.

Scientific Calculator

Use a keypad calculator for powers, roots, trigonometry, logarithms, and constants.

Percentage Calculator

Calculate percent-of, percent share, and percent changes.

Mean, Median, Mode, and Sum Calculator

Find the mean, median, mode, sum, minimum, and maximum from a pasted list of numbers.

BMI Calculator

Estimate body mass index and a healthy-weight range.

Calorie Calculator

Estimate maintenance, cutting, or bulking calories from body stats and activity.

Sales Tax Calculator

Calculate sales tax and total price.