Free Apps and ToolsNo Catch, No Subscription

New additions for files, fonts, code, audio, and data. Explore 394 new tools

Browse calculators by topic Finance, everyday life, construction, conversions, and more.

3633 apps · Showing 2401–2496

Data & Calculators

1770 apps

Data & Calculators: Probability Distributions

Numbers · CalculateStandard Normal Probit FinderFind the z-score with a chosen share of the standard normal curve to its left.
Numbers · CalculateLinear Regression R-Squared CheckerFit a straight line and show the share of y variation explained by it.Numbers · CalculateLinear Regression Residual ReportCompare each observed y value with the straight line’s estimate.Numbers · CalculateLinear Regression Value PredictorFit paired values, then use the line to estimate y at a chosen x.Numbers · CalculateNumber List Linear Regression LineFit a straight line through paired x and y values and show its slope and start.Numbers · GeneratePaired Sample Covariance FinderMeasure whether two paired samples tend to move in the same direction.Numbers · CalculatePearson Number Correlation FinderSee how strongly two paired number lists move together in a straight pattern.Numbers · CalculateSpearman Rank Correlation FinderMeasure whether paired values rise and fall in a similar rank order.

Data & Calculators: Reports & Data

PNG · AnalyzePivot Table ExplorerOpen a CSV, choose rows, columns, and a value to total, and explore a pivot table without a spreadsheet app.PNG · AnalyzeSurvey Results AnalyzerOpen a survey CSV. See a chart for every question, an NPS score, and the mood of written comments.

Data & Calculators: Scientific Data

JSON · ConvertGraph Algorithm WorkbenchExplore a network's connections and groups. Count links and find the path with the fewest steps between two nodes.CSV / Filter coefficients · ConvertSignal Filter DesignerDesign a digital Butterworth filter. Choose frequencies to keep or reduce, preview its response and download the filter settings.CSV · ConvertTime-Series ResamplerGroup timestamped CSV measurements by hour, day, week or month. Choose how to summarize the values and download the result.

Data & Calculators: Scientific File Services

SDF / MOL / SMILES / ZIP · ConvertChemical File ConverterConvert chemical structures between SDF, MOL and SMILES. Preview molecules, check errors and download the converted files.GeoTIFF / JSON / PNG · ConvertGeoTIFF InspectorLook inside a GeoTIFF map image. See its image bands, map coordinates and sample values, with an adjustable preview.GeoTIFF · ConvertRaster Crop ServiceCrop a GeoTIFF to a rectangle or polygon. Keep the map's coordinate grid and download the cropped image.

Data & Calculators: Sports Calculators

Calculator · CalculateBaseball On-Base Rate from Batting TotalsCalculate OBP from hits, walks, hit-by-pitches, at-bats and sacrifice flies, with valid zero counts and reversible relationships.Calculator · CalculateBaseball Slugging: Total Bases per At-BatCompute slugging from singles, doubles, triples, home runs and at-bats, including no-hit records and the four-base maximum.Calculator · CalculateBasketball True Shooting from Points & AttemptsCalculate true shooting percentage using the conventional 0.44 free-throw weighting, including zero free-throw attempts and values above 100%.Calculator · CalculateCricket Batting Strike Rate per 100 BallsCalculate batting strike rate from runs and balls faced, including zero-run innings and selectable format commentary.Calculator · CalculateCricket Bowling Average: Runs per WicketCalculate bowling average from runs conceded and wickets credited, including zero-run performances and reversible totals.Calculator · CalculateE-Bike Battery Range at Three Consumption RatesEstimate battery-only range from watt-hour capacity using explicit 14, 20 or 26 Wh-per-mile consumption assumptions.Calculator · CalculateERA from Whole Innings and Extra OutsCalculate earned-run average with separate whole innings and extra outs, plus an adjustable game length for nine- or seven-inning normalization.Calculator · CalculateFielding Percentage from Putouts, Assists & ErrorsCalculate the fielding fraction from recorded putouts, assists and errors, with reversible inputs and a guard against zero chances.Calculator · CalculateFishing Reel Line Length by Diameter RatioEstimate reel line capacity after a diameter change using equal line volume, with reversible length and diameter conversions.Calculator · CalculateGoalkeeper Save Percentage & Decimal IndexCalculate the share of shots on goal saved, displaying both a percentage and decimal index with consistent count validation.Calculator · CalculateGoalkeeper Save Rates & Goals Against AverageCalculate individual and aggregate save rates as percentages or decimal indices, plus time-adjusted goals against average, including zero saves and shutouts.Calculator · CalculateGoals Against Average per Regulation GameScale total goals allowed by minutes played to a chosen regulation-game length, including shutouts and partial games.Calculator · CalculateRace Finish-Time Percentage Reduction TargetsTurn a current race time into 1–10% reduction targets and a custom percentage target, preserving hours, minutes and seconds.Calculator · CalculateRunning Race-Time Estimate with a 1.06 ExponentProject a race time from a known distance and finish time using the explicit distance-ratio power model, with selectable distance and duration units.Calculator · CalculateTeam Winning Percentage with Adjustable Tie CreditCalculate a team’s winning percentage from wins, losses and ties, with explicit tie credit and reversible game totals.Calculator · CalculateWingspan-to-Height Ratio & Reach DifferenceCompare measured wingspan with height as both a unitless ratio and a signed length difference, using mixed measurement units.

Data & Calculators: Spread & Shape

Numbers · CalculateCoefficient of Variation FinderShow standard deviation as a share of the mean.Numbers · CalculatePower Deviation Sum FinderFind the sum of each value’s distance from the mean raised to a chosen power.Numbers · GenerateSample Kurtosis FinderMeasure the excess kurtosis of a sample number list.Numbers · GenerateSample Skewness FinderMeasure whether a sample has a longer tail on the left or right.Numbers · CalculateSingle Value Z-Score FinderSee how many standard deviations one value sits above or below a list mean.Numbers · GenerateZ-Score List StandardizerTurn every value into its number of standard deviations from the mean.

Data & Calculators: Statistics Calculators

Calculator · CalculateAbsolute & Relative Error from a Reference ValueMeasure the magnitude of a value’s deviation from a nonzero reference, including negative reference values.Calculator · CalculateAbsolute & Relative Uncertainty ConversionConvert an uncertainty magnitude to a relative percentage, or convert a percentage to uncertainty in the measurement’s units.Calculator · CalculateBayes’ Rule for Consistent Event ProbabilitiesCalculate a conditional probability from two event probabilities and the reverse conditional, with checks for a feasible joint distribution.Calculator · CalculateBonferroni & Šidák Per-Test Significance ThresholdsConvert a chosen family-wide significance level to a per-test threshold using Bonferroni or Šidák.Calculator · CalculateCompare Combination Counts with and without ReplacementCompare unordered selection counts with and without reuse of each object type, with a selectable small-example list.Calculator · CalculateCompare Ordered & Unordered Selection CountsCompare permutation counts with and without replacement, optionally show combination counts, and select a small-example list.Calculator · CalculateDegrees of Freedom for t, Chi-Square, ANOVA & WelchCalculate degrees of freedom for one-sample, pooled two-sample, Welch, contingency-table and one-way ANOVA designs.Calculator · CalculateDirect Proportion Constant & ValuesFind the constant k in y = kx, or recover a compatible value for a relationship through the origin.Calculator · CalculateExponential Waiting-Time Probabilities & MomentsCalculate exponential survival and cumulative probabilities, mean, median, variance and standard deviation from a constant event rate.Calculator · CalculateFalse-Positive Rate & Population SharesSeparate a classifier’s false-positive rate from false-positive and true-negative shares of the whole population.Calculator · CalculateFive-Star Rating from Vote CountsCalculate a one-to-five-star arithmetic average from the number of ratings at each level.Calculator · CalculateGeometric Distribution: Failures Before First SuccessFind the probability of exactly k failures before the first success, with the mean and spread of the failure count.Calculator · CalculateMean ± Sigma: Upper & Lower Control LimitsCalculate symmetric limits around a supplied mean using a nonnegative standard deviation and sigma multiplier.Calculator · CalculateOne-Sample t Statistic from Summary DataCalculate a one-sample t statistic from a sample mean, hypothesized mean, sample standard deviation and sample size.Calculator · CalculateOrdered Selections without Replacement: Count & ListCount ordered arrangements of r distinct objects chosen from n and list complete small examples.Calculator · CalculateOrdered Sequences with Replacement: Count & ListCount ordered length-r sequences from n reusable types and enumerate supported small examples.Calculator · CalculatePearson Chi-Square: One Cell’s ContributionCalculate one observed-versus-expected count’s contribution to a Pearson chi-square statistic, with explicit inverse branches.Calculator · CalculateProbability-Weighted Loss ComparisonCompare the expected monetary loss of two events from each event’s probability and loss amount.Calculator · CalculateProcess Capability: Cp, Cpk, Cpm & Target AdjustmentCalculate specification-width, centering and target-adjusted capability indices from a supplied process mean and positive standard deviation.Calculator · CalculateRaw Score & Z-Score StandardizationConvert between a raw value and its signed standard-deviation distance from a supplied mean.Calculator · CalculateRelative Standard Deviation Using Absolute MeanExpress a nonnegative standard deviation as a percentage of the magnitude of a nonzero mean.Calculator · CalculateRelative Standard Error as a Percentage of the MeanCompare a supplied standard error with the magnitude of a nonzero mean, retaining a nonnegative relative percentage.Calculator · CalculateSample Proportion from Successes & TrialsCalculate the observed success fraction p-hat from counts, or recover a compatible whole-number count.Calculator · CalculateSample-Mean Expectation & Standard ErrorFind the expected sample mean and its standard error for independent observations with a common finite mean and variance.Calculator · CalculateStandard Deviation Index Against a Consensus MeanExpress the difference between a laboratory mean and a consensus mean in units of the consensus-group standard deviation.Calculator · CalculateStandard Error of the Mean from SD & Sample SizeCalculate the standard deviation of a sample mean from an entered standard deviation and the number of independent observations.Calculator · CalculateThree Independent Events: All, Any, One or NoneCombine three mutually independent event probabilities to find all three, at least one, exactly one and no-event chances.Calculator · CalculateUnordered Selections with Replacement: Count & ListCount multisets of r choices from n distinct types and display the full list for small examples.Calculator · CalculateUnordered Selections without Replacement: Count & ListCount r-object subsets of n distinct objects and display complete small-example lists.Calculator · CalculateUnrounded Equal-Class WidthDivide a numerical range into equal-width classes, retaining the unrounded width and compatible inverse values.Calculator · CalculateVariance Ratio & Nested Regression F StatisticCompute a two-variance ratio or the residual-sum-of-squares F statistic for restricted and unrestricted nested regression models.

Data & Calculators: Summary Updates

Numbers · CalculateActual vs Expected Relative ErrorShow the absolute error as a share of the expected value.Numbers · CalculateAdd Value to Known MeanUpdate a known mean after one new value is added.Numbers · CalculateRemove Value from Known MeanUpdate a known mean after one value is removed from a list.Numbers · CalculateTwo-Group Combined MeanFind one mean from two group means and their group sizes, without the raw lists.Numbers · CalculateTwo-Group Combined VarianceFind one population variance from two group means, variances, and sizes.

Data & Calculators: Tables & Data

CSV / JSON / ZIP · ConvertEditable Data TableOpen CSV or JSON as an editable table. Keep exact text, change individual cell types, filter rows and save your work privately.CSV / JSON / ZIP · ConvertRecord Review QueueReview a table row by row, flag problems, attach notes and export accepted, rejected and pending records without uploading your data.

Data & Calculators: Tests & Evidence

Numbers · GenerateOne-Sample T-Score CalculatorCalculate the t statistic for a sample against an expected mean.Numbers · TestPoisson Chi-Square Fit CheckerTest whether a large list of non-negative event counts departs from a fitted Poisson distribution.Numbers · TestTwo-Group Permutation P-ValueEstimate a p-value by repeatedly reshuffling two groups with a repeatable seed.Numbers · GenerateTwo-Sample T-Score CalculatorCalculate a t statistic for the difference between two independent samples.Numbers · TestWilcoxon Rank Sum ScoreAdd the ranks of the first sample after both samples are sorted together.

Data & Calculators: Time & Calendars

Report / CSV / JSON · ConvertCalendar Conflict FinderFind overlapping events in an ICS calendar. Choose event series and see when each clash starts and how long it lasts.Calendar / ICS / CSV · ConvertCommunity Event CalendarKeep a clear calendar of local events, with categories, locations, search and a portable agenda to share.Calendar / ICS / CSV · ConvertCourse Schedule ExporterTurn weekly classes, term dates and skipped days into a time-zone-aware calendar you can import anywhere.Report / CSV / JSON · ConvertDaylight-Saving Transition ExplorerSee when clocks change in a time zone. Find skipped or repeated times and compare each local time with UTC.Report / CSV / JSON · ConvertRecurring Schedule DebuggerCheck which dates a calendar repeat rule creates. Find skipped dates and see how time zones and clock changes affect the schedule.Calendar / ICS / CSV · ConvertWeekly Time-Block PlannerMake room for your tasks in a weekly calendar. Drag, resize, edit and save your plan on your device.

Data & Calculators: Unit Converters

Calculator · CalculateAbsolute Bar & Gauge PSI at One AtmosphereConvert between gauge and absolute pressure with the ambient reference explicitly fixed at one standard atmosphere.Calculator · CalculateAbsolute MPa & Gauge PSI at One AtmosphereConvert between gauge and absolute pressure with the ambient reference explicitly fixed at one standard atmosphere.Calculator · CalculateAbsolute Temperature in Eight Scales100°C equals 212°F, 373.15 K and 671.67°R. Select compatible units to convert or solve from an entered equivalent quantity.Calculator · CalculateAcres to Hectares Conversion CalculatorConvert acres to hectares with exact unit factors, editable results and an explained example.Calculator · CalculateAcres to Square Feet Conversion CalculatorConvert acres to square feet with exact unit factors, editable results and an explained example.Calculator · CalculateAngle in Radians, Degrees & ArcsecondsConvert angular measurements between radians, degrees and arcseconds with reversible inputs.Calculator · CalculateAngstroms to Nanometers Conversion CalculatorConvert angstroms to nanometers with editable results, unit choices and a worked example.Calculator · CalculateArea in Metric, Imperial & Reference UnitsOne square meter is 10,000 square centimeters and approximately 10.7639 square feet. Select compatible units to convert or solve from an entered equivalent quantity.Calculator · CalculateAres & Hectares Metric Area Conversion CalculatorConvert ares & hectares metric area with editable results and an explained example.