All tools · Page 148
Find a calculator, convert a unit, or explore a formula. Each tool includes a method and a worked example.
Json Validator Formatter
Validate and reformat JSON while preserving original numeric tokens and object-key order.
Open toolUtf8 Byte Length Calculator
Count the UTF-8 bytes used by text, including accented characters and emoji.
Open toolMean Median Mode Calculator
Find the average, middle value and most frequently repeated values in a list of numbers.
Open toolVariance Calculator
Calculate sample or population variance from a list of numbers and compare their spread.
Open toolStandard Deviation Calculator
Calculate sample or population standard deviation from a list of observations.
Open toolQuartile Calculator
Find the first quartile, median and third quartile using linear percentile interpolation.
Open toolPercentile Calculator
Find the value at a chosen percentile of a list using linear interpolation.
Open toolInterquartile Range Calculator
Calculate the distance between the first and third quartiles of your data.
Open toolFive Number Summary Calculator
Summarize a list with its minimum, first quartile, median, third quartile and maximum.
Open toolOutlier Calculator
Identify values outside the 1.5 IQR Tukey fences using the stated quartile convention.
Open toolLinear Regression Calculator
Fit a least-squares straight line to paired observations and find its slope and intercept.
Open toolPearson Correlation Calculator
Measure the linear association between two equally sized lists of observations.
Open toolSpearman Correlation Calculator
Calculate rank correlation between paired observations, assigning average ranks to ties.
Open toolR Squared Calculator
Calculate R squared from actual values and predictions, including negative results where appropriate.
Open toolGeometric Mean Calculator
Find the geometric mean of positive numbers using their logarithms.
Open toolHarmonic Mean Calculator
Find the harmonic mean of positive numbers, useful when comparing suitable rates.
Open toolRoot Mean Square Calculator
Calculate the RMS magnitude of a list, including positive and negative values.
Open toolMedian Absolute Deviation Calculator
Find the unscaled median absolute deviation as a robust measure of spread.
Open toolMean Absolute Deviation Calculator
Find the average absolute distance of observations from their arithmetic mean.
Open toolRange Calculator
Find the spread between the largest and smallest values in a list.
Open toolBinomial Probability Calculator
Find the probability of exactly or at most a chosen number of independent successes.
Open toolCoin Flip Probability Calculator
Calculate the chance of exactly a chosen number of heads with a stated heads probability.
Open toolPoisson Calculator
Find the probability of an event count under a Poisson model with a stated expected count.
Open toolNegative Binomial Calculator
Find the probability of a chosen number of failures before a stated number of independent successes.
Open toolHypergeometric Calculator
Calculate the probability of a success count when sampling without replacement.
Open toolCard Probability Calculator
Find the probability of drawing matching cards without replacement from a stated deck composition.
Open toolDistance from speed and time calculator
Calculate distance from speed and time. Enter the two known values in the stated SI units and see the formula and result.
Open toolSpeed from distance and time calculator
Calculate speed from distance and time. Enter the two known values in the stated SI units and see the formula and result.
Open toolTime from distance and speed calculator
Calculate time from distance and speed. Enter the two known values in the stated SI units and see the formula and result.
Open toolDensity from mass and volume calculator
Calculate density from mass and volume. Enter the two known values in the stated SI units and see the formula and result.
Open toolMass from density and volume calculator
Calculate mass from density and volume. Enter the two known values in the stated SI units and see the formula and result.
Open toolVolume from density and mass calculator
Calculate volume from density and mass. Enter the two known values in the stated SI units and see the formula and result.
Open toolPressure from force and area calculator
Calculate pressure from force and area. Enter the two known values in the stated SI units and see the formula and result.
Open toolForce from pressure and area calculator
Calculate force from pressure and area. Enter the two known values in the stated SI units and see the formula and result.
Open toolArea from pressure and force calculator
Calculate area from pressure and force. Enter the two known values in the stated SI units and see the formula and result.
Open toolPower from energy and time calculator
Calculate power from energy and time. Enter the two known values in the stated SI units and see the formula and result.
Open toolEnergy from power and time calculator
Calculate energy from power and time. Enter the two known values in the stated SI units and see the formula and result.
Open toolTime from power and energy calculator
Calculate time from power and energy. Enter the two known values in the stated SI units and see the formula and result.
Open toolAluminium (elemental reference) mass calculator
Estimate mass from net solid volume using the published elemental aluminium density of 2.70 g/cm³.
Open toolCopper (elemental reference) mass calculator
Estimate mass from net solid volume using the published elemental copper density of 8.96 g/cm³.
Open toolIron (elemental reference) mass calculator
Estimate mass from net solid volume using the published elemental iron density of 7.87 g/cm³.
Open toolTitanium (elemental reference) mass calculator
Estimate mass from net solid volume using the published elemental titanium density of 4.506 g/cm³.
Open toolZinc (elemental reference) mass calculator
Estimate mass from net solid volume using the published elemental zinc density of 7.134 g/cm³.
Open toolPaper size, area and sheet mass calculator
Choose a nominal paper size, enter its grammage and sheet count, and calculate dimensions, area and estimated paper mass.
Open tool