Calculate the number of permutations (nPr) - how many ways to arrange r items from n when order matters. Permutation […]

Use this diameter calculator to compute a circle's radius, circumference, and area from its diameter. Diameter calculator Using the calculator […]

Need to find the nth term or sum of an arithmetic sequence? This arithmetic sequence calculator computes any term and […]

Need to round a number to a specific number of decimal places? The rounding calculator handles standard rounding plus ceiling, […]

A semester is half a year, or 6 months. Whether you are counting academic semesters or just measuring in half-year […]

Enter any number below to find its absolute value - the distance from zero on the number line, always expressed […]

Need to project a trend beyond your data? This linear extrapolation calculator fits a straight line to your data points […]

Use this right logical shift calculator to shift bits right and fill with zeros. Unlike arithmetic shift, this operation does […]

Calculate the number of combinations (nCr) - how many ways to choose r items from n when order does not […]

On this page is a logarithm calculator. Enter a logarithm base and x, and we'll compute the logarithm. Logarithm calculator […]