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1822 apps · Showing 1057–1152
Data & Calculators
1822 appsData & Calculators: Counting & Sampling
Number List Chunk Maker
Keep the original order while breaking a number list into equal-size chunks.
Number Permutation List Maker
Make every ordering of a short number list.
Repeatable Number List Shuffler
Shuffle all values with a repeatable seed.
Repeatable Random Sample Picker
Choose a repeatable random sample where each list item can be picked once.
Replacement Combination List Maker
List every unordered group while allowing a value to appear more than once.
Whole Number Factorial Calculator
Find n! for a non-negative whole number up to 170.
Data & Calculators: Data File Services
Data & Calculators: Diagrams & Graphs
Automatic Flow Layout
Arrange connected shapes into a clear flow. Choose a direction and spacing, adjust positions and download the diagram.
Community Structure Explorer
Find groups of closely connected nodes in a network. Adjust the grouping settings and download each node's group.
Complex Diagram Arranger
Rearrange a busy diagram automatically. Try rows, circles, trees and other layouts, then edit and save the result.
Decision Tree Builder
Build a decision tree with questions and answers. Check its branches, follow a path and download the project.
Dependency Map Builder
Turn a CSV list of dependencies into a diagram. Edit connections, labels and positions, then save the map or project.
Game Map Route Planner
Plan a route through your game map. Set travel costs, block locations and download a diagram of the chosen path.
Graphviz DOT Playground
Preview Graphviz DOT diagrams online. Choose a layout, check syntax errors and download the graph as an SVG.
Knowledge Map Editor
Build a map of ideas and how they connect. Add notes and tags, search your map and save a project file.
Network Centrality Calculator
Find well-connected nodes in a network. Compare degree, PageRank, betweenness and closeness scores, then download the results.
Network Layout Comparison Lab
Compare layouts for the same network side by side. Choose the clearest view and keep it for editing or download.
Org Chart Layout Helper
Make an organization chart from reporting relationships. Check for errors, arrange people and export the diagram.
Relationship Graph Explorer
Explore a map of items and their connections. Search names and tags, read notes and focus on nearby links.
Shortest Path Teaching Tool
Find the shortest route through a network. Compare the fewest steps with the lowest cost and see how the route is chosen.
Data & Calculators: Document & Data Services
CSV Transformation Service
Select, filter and clean CSV columns with a recipe. The service processes rows in small groups and returns a new CSV.
Data Cleaning Studio
Clean a CSV table with repeatable steps. Rename columns, fix values and filter rows, then download the cleaned table.
Data Pipeline Previewer
See what each step in a CSV data pipeline changes. Review row counts and sample values before saving the final table.
Dimensionality Reduction Explorer
Turn many number columns into a 2D PCA chart. Explore patterns and see how much of the data's variation the chart keeps.
Geometry Repair Workbench
Check GeoJSON shapes for errors such as crossing polygon edges. Try repairs and compare the results before using the new file.
GIS Table Join Desk
Add CSV data to a GeoJSON map by matching a shared field. Check which records matched and download the combined file.
Linear Optimization Workbench
Solve a linear optimization problem with limits on its variables. See the best result and check how each constraint is met.
Math Expression Code Generator
Turn a math expression into C, JavaScript or Python code. Name the variables and copy or download the result.
Spatial Dataset Cleanup
Clean a GeoJSON dataset and change its coordinate system. Review shape errors, attempt repairs and download a new copy.
Symbolic Equation Solver
Solve a supported equation with one unknown. Find exact roots when possible and compare their decimal values.
Tabular Model Training Lab
Train simple models from number columns in a CSV file. Test them on separate rows and compare their scores.
Data & Calculators: Ecology Calculators
Kaya Emissions from Population, Income, Energy & Carbon
Calculate energy-related CO₂ emissions from population, output per person, energy intensity and carbon intensity, or solve one factor in reverse.
Leaking Faucet Water Loss from Drip Rate
Estimate lost water from a steady drip rate, duration and number of faucets using a 0.25 mL drop, with volume conversions and a 40 US gallon bath comparison.
Logistic Carrying Capacity from Population Growth
Rearrange the continuous logistic growth equation to estimate carrying capacity from population, intrinsic growth rate and observed growth, with retained inverse calculations.
Residential Water Demand with Peak Multipliers
Estimate average, maximum-day and peak-hour flow rates from population and per-person demand, including the retained 10% allowance and adjustable peak factors.
Data & Calculators: Everyday Calculators
100-Day Calendar Window with Endpoint Counting
Calculate 100-day calendar window with endpoint counting with calendar inputs, retained inverse relationships and explicit duration conventions.
120-Day Calendar Window with Endpoint Counting
Calculate 120-day calendar window with endpoint counting with calendar inputs, retained inverse relationships and explicit duration conventions.
45-Day Calendar Window with Endpoint Counting
Calculate 45-day calendar window with endpoint counting with calendar inputs, retained inverse relationships and explicit duration conventions.
60-Day Calendar Window with Endpoint Counting
Calculate 60-day calendar window with endpoint counting with calendar inputs, retained inverse relationships and explicit duration conventions.
Absolute Time-Offset Difference in Hours, Minutes & Seconds
Find the nonnegative difference between two elapsed-time positions on the same timeline, with reversible unit conversion.
Age in Days from Calendar Dates
Convert the calendar-day span between a birth date and a reference date into days, with leap days included and clearly stated duration conventions.
Age in Hours from Calendar Dates
Convert the calendar-day span between a birth date and a reference date into hours, with leap days included and clearly stated duration conventions.
Age in Minutes from Calendar Dates
Convert the calendar-day span between a birth date and a reference date into minutes, with leap days included and clearly stated duration conventions.
Age in Months from Calendar Dates
Convert the calendar-day span between a birth date and a reference date into months, with leap days included and clearly stated duration conventions.
Age in Seconds from Calendar Dates
Convert the calendar-day span between a birth date and a reference date into seconds, with leap days included and clearly stated duration conventions.
Age in Weeks from Calendar Dates
Convert the calendar-day span between a birth date and a reference date into weeks, with leap days included and clearly stated duration conventions.
Annual Building Energy Intensity Calculator
Compare annual energy use with building floor area.
Appliance Energy Use & Running Cost Calculator
Estimate electricity consumption and cost from power, usage time and energy price.
Appliance Energy Use & Running Cost Calculator
Estimate recurring electricity use and cost from power, daily operating time and an energy tariff.
Appliance Straight-Line Value Estimate Calculator
Model remaining appliance value using replacement cost, age and a chosen annual depreciation rate.
Applicant Acceptance Percentage Calculator
Express accepted applicants as a share of all applicants.
Audiobook Playback Duration & Time Difference
Calculate listening duration at an entered playback speed, including time saved above 1× or extra time below 1×.
Baggage Combined Dimensions Calculator
Add luggage length, width and height and express the total in inches.
Battery Capacity & Charge-Time Model Calculator
Estimate charging duration from remaining amp-hours and a fixed effective charging-current assumption.
BCE to CE Year Interval Calculator
Calculate the year interval across the BCE/CE boundary without a year zero.
Book Reading Time & Daily Page Plan
Plan total reading time, daily pages and days to finish from a book’s page count and your reading pace.
Calendar Date Differences and Signed Duration Offsets
Calculate calendar date differences and signed duration offsets with calendar inputs, retained inverse relationships and explicit duration conventions.
Calendar-Day Countdown with Fixed-Duration Breakdown
Calculate calendar-day countdown with fixed-duration breakdown with calendar inputs, retained inverse relationships and explicit duration conventions.
Calendar-Day Scheduling Slack between Start Dates
Calculate calendar-day scheduling slack between start dates with calendar inputs, retained inverse relationships and explicit duration conventions.
Clay Shrinkage & Finished Dimensions Calculator
Estimate finished clay dimensions or the starting size needed for a target length, width and height.
Cleaning Hours, Area & Room Quote Calculator
Estimate a cleaning quote from hourly, area-based or room-based prices.
Compare Package Prices by Weight, Volume or Item
Compare package prices using a common unit and see which option costs less.
Cosmetic Product Uses, Duration & Cost per Use
Estimate applications, replacement interval and cost from product volume, layers per volume, layers per use and application frequency.
Cost per Square Inch Comparison
Compare two entered prices per square inch, with quantity, total-cost and unit-price calculations in either direction.
Crouch Planing-Boat Speed, Power & Weight
Estimate planing speed from shaft power, loaded displacement and a hull coefficient, with unit choices and inverse calculations.
Curtain Fullness, Total Width & Drop Allowances
Calculate combined curtain width from fullness and compare half-height, four-inch and ten-inch drop allowances.
Curtain Panel Cut Dimensions & Linear Fabric
Estimate cut width and total fabric length using captured fullness ratios, heading allowances and an entered count of identical curtain panels.
Cylindrical Well Standing Water Volume Calculator
Calculate standing water and total cylindrical bore volume from diameter and depths.
Daily Reading Pages & Books Pace Calculator
Estimate reading progress from daily time, page-reading pace or words per minute.
Date Span in Fixed 30.4375-Day Month Equivalents
Calculate date span in fixed 30.4375-day month equivalents with calendar inputs, retained inverse relationships and explicit duration conventions.
Date Span in Fixed 365.25-Day Year Equivalents
Calculate date span in fixed 365.25-day year equivalents with calendar inputs, retained inverse relationships and explicit duration conventions.
Distance & Speed Driving Time Calculator
Estimate driving duration from distance and average speed.
Distance & Two-Speed Travel Time Comparison
Calculate travel time, distance or average speed, and compare two speeds over the same distance.
Driving Commute Time & Cost Calculator
Estimate the time and vehicle costs associated with a recurring commute.
Dryer Energy & Running Cost Comparison Calculator
Compare modeled electric and gas dryer energy costs per load, week and year.
Duration in Decimal Hours, Minutes & Seconds
Express the same entered duration as decimal hours, total minutes and total seconds, with optional component-by-component working.
Duration to Decimal Hours with Working
Convert an entered duration in hours, minutes and seconds into decimal hours, with optional working for each component.
Elapsed Calendar Days with Optional Endpoint Inclusion
Calculate elapsed calendar days with optional endpoint inclusion with calendar inputs, retained inverse relationships and explicit duration conventions.
Engine Hours & Assumed-Speed Distance Calculator
Estimate travel distance from running hours and an average speed, or model an explicitly assumed idle-hour distance equivalent.
Engine Idling Fuel Volume & Cost Estimate
Estimate fuel use while stationary from engine displacement and a petrol or diesel coefficient, then calculate cost in the selected units.
Engine RPM, Wheel RPM & Ideal Road Speed
Relate engine and wheel rotational speed through an overall drive ratio, then estimate road speed from tire diameter.
File Download Duration & Speed Calculator
Estimate download duration from file size and transfer speed, with unit choices.
Fixed-Density Filler Bag Count Calculator
Estimate rectangular filler quantity at 20 kg/m³ and round purchase bags upward.
Fixed-Duration Date Offsets with Year and Month Approximations
Calculate fixed-duration date offsets with year and month approximations with calendar inputs, retained inverse relationships and explicit duration conventions.
Fuel Tank Driving Distance Calculator
Estimate travel distance from available fuel and fuel economy.
Gross Typing Speed Calculator
Calculate words typed per minute before error adjustments.
Hair Length at Half an Inch per Month
Explore a constant half-inch-per-month hair-length scenario, or estimate the time between a current and target length.
Half-Square Quilt Cutting Size Calculator
Find a starting square size for the seven-eighths-inch quilting method.
Headphone Sensitivity, RMS Voltage & Power Estimate
Estimate nominal headphone power, RMS voltage and current from sensitivity and a modeled sound-pressure level.
Hot Tub Electricity Session Cost Calculator
Estimate hot tub energy cost from average power and operating time.
Hours, Minutes & Seconds Difference Calculator
Subtract one duration from another with compound time units.
Hours, Minutes & Seconds to Decimal Duration
Convert additive hours, minutes and seconds into decimal hours, decimal minutes and total seconds, with optional calculation steps.
Ideal Boost-Pressure Power Ratio Estimate
Explore a simple pressure-ratio power estimate with a fixed 14.7 psi ambient reference.
Land Cost per Acre Comparison
Compare two entered prices per acre, with quantity, total-cost and unit-price calculations in either direction.
Material Cost per Linear Foot Comparison
Compare two entered prices per foot, with quantity, total-cost and unit-price calculations in either direction.
Measured MPG, Fuel Consumption & Trip Cost
Calculate economy from trip distance and fuel used, distinguish US from UK MPG, and apply an entered fuel price.