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Data & Calculators
1770 appsData & Calculators: Everyday Calculators
Calculator · CalculateDistance & Two-Speed Travel Time ComparisonCalculate travel time, distance or average speed, and compare two speeds over the same distance.Calculator · CalculateDriving Commute Time & Cost CalculatorEstimate the time and vehicle costs associated with a recurring commute.Calculator · CalculateDryer Energy & Running Cost Comparison CalculatorCompare modeled electric and gas dryer energy costs per load, week and year.Calculator · CalculateDuration in Decimal Hours, Minutes & SecondsExpress the same entered duration as decimal hours, total minutes and total seconds, with optional component-by-component working.Calculator · CalculateDuration to Decimal Hours with WorkingConvert an entered duration in hours, minutes and seconds into decimal hours, with optional working for each component.Calculator · CalculateElapsed Calendar Days with Optional Endpoint InclusionCalculate elapsed calendar days with optional endpoint inclusion with calendar inputs, retained inverse relationships and explicit duration conventions.Calculator · CalculateEngine Hours & Assumed-Speed Distance CalculatorEstimate travel distance from running hours and an average speed, or model an explicitly assumed idle-hour distance equivalent.Calculator · CalculateEngine Idling Fuel Volume & Cost EstimateEstimate fuel use while stationary from engine displacement and a petrol or diesel coefficient, then calculate cost in the selected units.Calculator · CalculateEngine RPM, Wheel RPM & Ideal Road SpeedRelate engine and wheel rotational speed through an overall drive ratio, then estimate road speed from tire diameter.Calculator · CalculateFile Download Duration & Speed CalculatorEstimate download duration from file size and transfer speed, with unit choices.Calculator · CalculateFixed-Density Filler Bag Count CalculatorEstimate rectangular filler quantity at 20 kg/m³ and round purchase bags upward.Calculator · CalculateFixed-Duration Date Offsets with Year and Month ApproximationsCalculate fixed-duration date offsets with year and month approximations with calendar inputs, retained inverse relationships and explicit duration conventions.Calculator · CalculateFuel Tank Driving Distance CalculatorEstimate travel distance from available fuel and fuel economy.Calculator · CalculateGross Typing Speed CalculatorCalculate words typed per minute before error adjustments.Calculator · CalculateHair Length at Half an Inch per MonthExplore a constant half-inch-per-month hair-length scenario, or estimate the time between a current and target length.Calculator · CalculateHalf-Square Quilt Cutting Size CalculatorFind a starting square size for the seven-eighths-inch quilting method.Calculator · CalculateHeadphone Sensitivity, RMS Voltage & Power EstimateEstimate nominal headphone power, RMS voltage and current from sensitivity and a modeled sound-pressure level.Calculator · CalculateHot Tub Electricity Session Cost CalculatorEstimate hot tub energy cost from average power and operating time.Calculator · CalculateHours, Minutes & Seconds Difference CalculatorSubtract one duration from another with compound time units.Calculator · CalculateHours, Minutes & Seconds to Decimal DurationConvert additive hours, minutes and seconds into decimal hours, decimal minutes and total seconds, with optional calculation steps.Calculator · CalculateIdeal Boost-Pressure Power Ratio EstimateExplore a simple pressure-ratio power estimate with a fixed 14.7 psi ambient reference.Calculator · CalculateLand Cost per Acre ComparisonCompare two entered prices per acre, with quantity, total-cost and unit-price calculations in either direction.Calculator · CalculateMaterial Cost per Linear Foot ComparisonCompare two entered prices per foot, with quantity, total-cost and unit-price calculations in either direction.Calculator · CalculateMeasured MPG, Fuel Consumption & Trip CostCalculate economy from trip distance and fuel used, distinguish US from UK MPG, and apply an entered fuel price.Calculator · CalculateMechanical Speedometer Gear Ratio at 1001 Revs/MileRelate tire diameter or rolling revolutions, axle ratio and drive/driven gear tooth counts using the captured 1001 cable-revolutions-per-mile calibration.Calculator · CalculateMinute Duration Converter & Ten-Value SumConvert a duration through minutes, seconds, hours and fixed longer units, or add the first two through ten duration values.Calculator · CalculateMinutes Between Two Clock OffsetsSubtract a start time from an end time using hours, minutes and seconds, with editable duration units.Calculator · CalculateNautical Distance & Constant-Speed Time CalculatorConvert nautical miles to metric or statute units, and calculate a separate constant-speed journey.Calculator · CalculatePaper Sheet Mass, Grammage & 500-Sheet BasisCalculate sheet and stack mass from grammage, or convert 500-sheet basis weights using retained paper-size and basic-sheet presets.Calculator · CalculatePaper Stack & Sheet Thickness CalculatorEstimate average sheet thickness from a measured paper stack.Calculator · CalculatePer-Minute Service Cost CalculatorCompare a service or activity cost with its duration.Calculator · CalculatePet-Sitting Hourly Cost & Multi-Day BudgetCalculate an hourly pet-sitting budget from care hours per day, days of care and the agreed hourly rate.Calculator · CalculatePodcast Listening Time & Episode CapacityEstimate episode equivalents from daily listening opportunities, playback speed and an explicit extra-time allowance.Calculator · CalculatePrice per Gram & Multipack ComparisonCompare prices per gram for single quantities or equal-weight multipacks, with other mass units and reverse calculations.Calculator · CalculatePrice per Ounce & Multipack ComparisonCompare prices per ounce for single quantities or equal-weight multipacks, with other mass units and reverse calculations.Calculator · CalculatePrice per Pound & Multipack ComparisonCompare prices per pound for single quantities or equal-weight multipacks, with other mass units and reverse calculations.Calculator · CalculateProduction Date plus Entered Fixed Storage DurationCalculate production date plus entered fixed storage duration with calendar inputs, retained inverse relationships and explicit duration conventions.Calculator · CalculateProduction Time per Unit CalculatorCalculate average cycle time from output and net available production time.Calculator · CalculateReading & Speaking Duration PlannerEstimate reading and speaking duration using presets or your own pace.Calculator · CalculateReading Pace & Book Planning CalculatorConnect reading pace, daily reading time, pages and books over a chosen period.Calculator · CalculateRecurring Rate per Year, Day, Hour & SecondConvert an average count or signed quantity per time unit between years, months, weeks, days, hours, minutes and seconds.Calculator · CalculateReward-Mile Valuation & Cash Fare ComparisonCompare a cash fare with miles plus fees using an entered cents-per-mile valuation or the retained illustrative airline presets.Calculator · CalculateRoom Lumens & Bulb Count from Target LuxEstimate lumens and whole bulbs from rectangular area and target illuminance, with retained room presets and a custom target.Calculator · CalculateSeries Total Watch Time CalculatorAdd up viewing time from episode length, episodes and seasons.Calculator · CalculateSession Duration Total & Decimal-Hour ConverterTotal up to twenty hours-and-minutes durations, with a separate decimal-hours and minutes conversion pair.Calculator · CalculateShower Water & Heating Cost Model CalculatorEstimate daily water use and running costs with an explicit fixed heating-energy factor.Calculator · CalculateSingle-Session Electricity Cost CalculatorEstimate energy use and electricity cost for one operating session.Calculator · CalculateSpecified Petrol-to-Oil Volume CalculatorCalculate the oil amount for a supplied petrol-to-oil ratio.Calculator · CalculateSpeech Duration, Word Count & Speaking RateEstimate speech duration from word count and a selected pace, enter a custom rate, or measure your rate from a timed passage.Calculator · CalculateStacked Firewood Volume, Cords & PriceConvert a rectangular wood stack into full cords, a fixed 16-inch face-stack comparison and total price using exact cubic-foot conversion.Calculator · CalculateTime Span in Hours, Minutes & SecondsSubtract two times on the same timeline or solve for a start or end time.Calculator · CalculateTire, Axle Ratio & Sensor Pulses per MileEstimate pulses per mile from wheel revolutions, axle reduction and sensor teeth under a stated sensor-position model.Calculator · CalculateToothpaste Supply Duration & Repeat-Purchase BudgetEstimate how long a toothpaste tube lasts and its steady-use purchase cost from usable volume, portion size and household usage.Calculator · CalculateTraffic Flow, Density & Spacing CalculatorRelate average traffic counts, flow, density, spacing and speed.Calculator · CalculateTrip Distance, Fuel Economy & Cost CalculatorCalculate distance per unit of fuel, reciprocal consumption and trip fuel cost.Calculator · CalculateTrip Fuel Cost & Return Journey EstimateEstimate fuel quantity and entered-price cost for a one-way or return trip, using known consumption or measured distance and fuel.Calculator · CalculateTrip Fuel Use & Cost CalculatorCalculate fuel economy, consumption and fuel spending for a trip.Calculator · CalculateTwenty-Entry Duration Sum & Missing TimeAdd up to twenty signed durations in hours, minutes and seconds, or solve a missing duration from the total.Calculator · CalculateTwo-Product Unit Price & Pack ComparisonCompare two products by price per mass, volume or item, including multipacks and the absolute difference in unit prices.Calculator · CalculateTyping Words & Keystrokes Rate CalculatorConvert typing rates using five keystrokes per standard word.Calculator · CalculateVehicle Base Weight, Payload & GVWR ArithmeticAdd a vehicle base weight and rated payload, or subtract either from a supplied gross vehicle weight rating.Calculator · CalculateVolume Ratio to Ideal Isothermal PressureCalculate the absolute-pressure change for a fixed amount of ideal gas held at constant temperature.Calculator · CalculateWater & Concentrate Mixture CalculatorSplit a target mixture volume using a water-to-concentrate ratio.Calculator · CalculateWheel Width & Offset Position ComparisonCompare changes in a wheel’s inner reach and outer position from width and signed offset.Calculator · CalculateWizard Coin Galleon, Sickle & Knut EquivalentsConvert fictional coin amounts using the fixed relationships of 17 sickles per galleon and 29 knuts per sickle.
Data & Calculators: Groups & Breaks
Numbers · GenerateCkmeans Number Group MakerGroup a sorted number list so values inside each group stay close together.Numbers · CalculateCluster Silhouette Score CheckerGroup points with k-means, then score how well each point fits its group.Numbers · GenerateEqual Interval Breaks MakerMake evenly spaced class breaks from the smallest value to the largest.Numbers · GenerateJenks Natural Breaks MakerPlace break points where the number list has useful gaps.Numbers · GenerateK-Means Point Group MakerGroup two- or three-part points around nearby centers.Numbers · GenerateKernel Density Estimate MakerEstimate how tightly values gather around points across the list range.Numbers · GenerateNumber Frequency Table MakerSort a number list and count how often every value appears.
Data & Calculators: Kitchen & Groceries
Data & Calculators: Local SQL
CSV / JSON / SQL · ConvertCSV SQL WorkbenchRun SQL queries on CSV files in your browser. Check column types, combine tables and download your results.CSV / JSON / SQL · ConvertJSON SQL Query ToolQuery JSON data with SQL on your device. Explore tables and nested values, then download the results.SQLite / SQL / CSV / JSON · ConvertSQL Practice SandboxLearn SQL with a working sample database, eight guided exercises, hints, checked results and reusable query notebooks.SQLite / SQL / CSV / JSON · ConvertSQLite File ExplorerOpen a SQLite database on your device. Browse tables, inspect their links and download query results without uploading the file.CSV / JSON / SQL · ConvertTable Join BuilderJoin CSV or JSON tables by matching columns. Preview the SQL, choose how to keep unmatched rows and download the combined data.
Data & Calculators: Maps & GIS
CSV / GeoJSON · ConvertCoordinate System ConverterConvert map coordinates between WGS84, Web Mercator, UTM and Canada Lambert. Check the converted points on a map.GeoJSON / CSV · ConvertEncoded Route DecoderDecode an encoded polyline into map coordinates. Preview the route and download its longitude and latitude values.Stroke JSON / SVG · ConvertFreehand Stroke OptimizerSimplify a freehand drawing with fewer points. Compare detail levels and save a smaller SVG or editable project.GeoJSON / CSV · ConvertGeographic Measurement DeskMeasure routes and areas on a map. Draw or import shapes, find their centers and create a boundary around them.Shapefile ZIP / GeoJSON / CSV · ConvertGeoJSON to Shapefile ExporterConvert GeoJSON to shapefile downloads. Keep map shapes and their data together with the files needed to open them.CSV / GeoJSON / Shapefile ZIP · ConvertGIS Attribute Export AssistantChoose which map shapes and data fields to export. Download a smaller GIS dataset or a shapefile package.GeoJSON / CSV · ConvertGPX to GeoJSON ConverterTurn GPX tracks, routes and waypoints into GeoJSON and inspect their names, coordinates and properties.GeoJSON / CSV · ConvertKML to GeoJSON ConverterConvert local KML placemarks and geometry into editable GeoJSON with a map and attribute preview.GeoJSON / CSV · ConvertPersonal Places MapPin meaningful places, edit coordinates and notes, organize categories and save a portable map dataset.GeoJSON / CSV · ConvertPhoto Travel MapMap GPS-tagged photos locally, inspect their locations and place photos without location tags by hand.Encoded polyline / GeoJSON · ConvertRoute URL PackerTurn route coordinates into a short encoded polyline. Preview the route and copy the text for use in mapping tools.GeoJSON / CSV · ConvertShapefile PreviewerOpen a local shapefile ZIP, choose a layer and inspect its map geometry, coordinate system and attribute records.GeoJSON / CSV · ConvertShapefile to GeoJSON ConverterConvert supported shapefile archives into WGS84 GeoJSON while preserving geometry and decoded attributes.CSV / GeoJSON · ConvertSurvey Coordinate CheckerCheck whether two sets of map coordinates describe the same places. Measure the gaps and flag points beyond your chosen limit.
Data & Calculators: Numbers & Reports
CSV / JSON · ConvertLocalized Report FormatterFormat numbers and prices in a CSV or JSON table for different regions. Check errors and download your finished report.CSV / JSON · ConvertNumber Formatting PlaygroundSee how numbers, prices and percentages look in different languages and regions. Compare formats without changing the values.