All tools — Page 10
969 useful tools. Browse a category or search the full toolkit.
Incoherent Sound Level Combiner
Combine same-reference sound levels by adding their incoherent intensity ratios stably.
MathMolar Solution Dilution Calculator
Find an entered stock volume and ideal added solvent for a lower target molarity.
MathIdeal Pipe Flow and Head-loss Calculator
Calculate pipe velocity, Reynolds number and Darcy-Weisbach loss from explicit SI model properties.
MathSurface Coverage and Container Planner
Estimate net surface coverage, coats, user-entered waste and whole containers in one bounded workflow.
MathConstant Acceleration Motion Calculator
Calculate signed one-dimensional motion or enumerate nonnegative times that reach a given displacement.
MathIdeal Projectile Motion Calculator
Calculate a drag-free flight time, range, peak height and bounded sample trajectory under entered gravity.
MathFisher Exact2×2 Test Calculator
Compute a bounded fixed-margin Fisher exact probability with a named one- or two-sided alternative.
MathMcNemar Paired Binary Test Calculator
Analyze discordant outcomes in a matched binary table with exact or corrected approximate inference.
MathStandardized Mean Effect Size Calculator
Calculate signed pooled-SD Cohen d or exact-definition Hedges g from two independent numeric samples.
MathTwo-proportion Experiment Power Planner
Plan bounded independent group sizes or estimate fixed-horizon power under a stated normal-arcsine approximation.
MathIQR and MAD Outlier Review
Flag source indices using a named robust IQR or modified-z review rule without deleting data.
MathHistogram Bin and Frequency Calculator
Build a downloadable frequency distribution using manual edges or a named bounded bin rule.
MathBayes Theorem Calculator
Update an entered prior with two conditional likelihoods and display the evidence denominator.
MathConfusion Matrix Metrics Calculator
Calculate explicitly oriented binary or multiclass prediction metrics from a whole-count confusion table.
MathFinite Markov Transition Calculator
Propagate an entered finite probability distribution through a bounded row-stochastic transition matrix.
MathFair Dice Sum Probability Calculator
Compute exact outcome counts and a downloadable sum distribution for bounded fair independent dice.
ImagesSolid Color Background Remover
Make a selected solid color transparent with adjustable RGB distance, feathering and optional edge-connected removal; download a PNG.
ImagesImage to ASCII Art
Convert a local raster into a bounded monospaced text grid with a custom lightness ramp, character aspect compensation and transparency background.
TextWord Cloud Image Generator
Count eligible words and generate a local weighted word-cloud PNG, with explicit filtering, deterministic placement and a report of omitted words.
ImagesSVG Shape and Pattern Generator
Generate editable SVG rectangles, ellipses, polygons, stars or seamless dot, checker and stripe tiles from bounded numeric settings.
CalculatorsRectangular Tile Layout Planner
Map a straight tile grid, compare rotation, and download the dimensions of every edge cut.
CalculatorsDimensional Weight Batch Planner
Compare actual and dimensional weight across a package batch using your divisor and rounding rules.
CalculatorsTelescope Eyepiece Comparison Planner
Compare magnification, exit pupil and approximate sky field for a table of eyepieces.
CalculatorsProject Critical Path Planner
Calculate earliest and latest task timing, exact total slack and critical connections in a task network.
CalculatorsLearning Curve Production Planner
Build a unit-by-unit effort schedule under Wright or Crawford learning assumptions and total a production batch.
CalculatorsPayoff and Information Value Workbench
Compare expected payoff, expected regret and the value of perfect information for your scenario table.
MathNormal Q-Q Plot Workbench
Plot ordered observations against normal quantiles and export positions, reference values and residuals.
EducationWeighted Shortest Path Workbench
Inspect a shortest-path witness and distances from one source in your own nonnegative weighted graph.
EducationSignal Convolution and Correlation Workbench
Calculate bounded discrete linear convolution or cross-correlation with explicit sample indices and cropping.
CalculatorsCost Assignment Workbench
Find an exact minimum-cost or maximum-value one-to-one assignment and export the matching witness.
EducationSudoku Solution Inspector
Check9×9 Sudoku givens, find a solution witness and inspect uniqueness within a bounded search.
EducationChemical Equation Workbench
Balance a neutral molecular equation exactly and inspect an atom-by-atom conservation witness.
DataCSV Missingness Pattern Auditor
Inspect joint missing-value patterns and complete-case record numbers under an exact token policy.
DataTable Unpivot Workbench
Turn selected wide CSV measure columns into variable/value records without aggregating text.
DataGrouped Table Fill-Gaps Workbench
Fill declared missing cells from earlier or later source records within exact groups,with a provenance report.
DataDeclared Functional Dependency Checker
Check whether equal determinant CSV fields always have equal dependent fields in the supplied records.
DataCSV As-of Join Workbench
Match records to backward,forward or nearest numeric keys within explicit groups and tolerance.
EducationSupplied Dictionary Word Ladder Solver
Find a shortest one-letter substitution path using only your supplied equal-length word list.
EducationHistorical SM-2 Review Schedule Workbench
Apply an explicit historical SM-2 transition to local card-state records and preserve the previous state.
EducationRubric Scorecard Builder
Combine original criterion descriptors and explicit level ratings into reviewable weighted scorecards.
EducationRound-Robin Fixture Generator
Create all-pairs rounds with explicit odd-participant byes and an optional mirrored second leg.
EducationBoolean Truth Table Workbench
Enumerate bounded propositional truth tables and find real counterexamples to formula equivalence.
EducationEducational Huffman Coding Workbench
Build a deterministic UTF8-byte Huffman table or decode bits with an explicit checked prefix codebook.
TextUser Glossary Consistency Checker
Find declared forbidden term variants with exact source offsets and explicit preferred-term evidence.
TextTaskPaper Source Outline Workbench
Inspect a declared tab-indented TaskPaper profile with parent lines,item kinds and literal tags.
AccessibilityCaption Timing and Reading Load Auditor
Review plain subtitle cues against your explicit source reading-speed,line-length,duration and adjacent-gap thresholds.
AccessibilityHTML Autocomplete Token Auditor
Inspect declared autocomplete detail tokens,ordering,contact qualifiers and the hidden-control on/off restriction.
AccessibilityStatic Link Purpose Source Auditor
Review checked link naming evidence,generic labels and identical labels with different raw destinations.