Math

Calculate finite power towers with right- or left-grouped powers, plus a base-10 logarithm for values too large to display.

Evaluate a logarithm containing x, or solve for x when the expression inside the logarithm is linear.

Factor any whole number into primes, see all positive factors, and handle 0, 1, negatives, and large integers clearly.

Find the exact remainder of two integers, see the matching quotient, and check when programming percent behavior differs.

Solve a missing value in a proportion or check whether two ratios match with clear cross-multiplication steps.

Calculate survey margin of error, confidence interval, and sample size needed for percentages or averages.

Add, subtract, multiply, or divide mixed numbers. See the answer as a mixed number, improper fraction, decimal, and worked steps.

Reduce a fraction to lowest terms. Enter the numerator and denominator to see the simplified fraction, GCF, and mixed number if needed.

Find a principal square root, simplified radical, decimal approximation, and solutions to x squared equals your number.

Solve a missing value in A/B = C/D. Check the completed proportion, matching cross products, and optional quantity labels.