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Complete ToolPatch tools directory
ToolPatch is a growing collection of focused utilities and practical workflow toolkits. Each page handles one task with clear inputs, fast results, and usable outputs.
Toolkits for common workflows
Start with a workflow when the job spans several small tools, assumptions, or handoff steps.
Startup Unit Economics Toolkit
Build, stress-test, and communicate your core economics in one workflow.
Network Troubleshooting Toolkit
Diagnose addressing, DNS, and transport bottlenecks quickly.
Lab and Chemistry Calculations Toolkit
Plan solution preparation, dilution, gas-law, reaction-yield, and pH checks with visible chemistry assumptions.
Project Delivery Planning Toolkit
Forecast schedule and delivery risk using practical PM metrics.
Engineering Field Calcs Toolkit
Fast first-pass engineering calculations for site and workshop decisions.
Chart Generators Toolkit
Choose the right chart generator for radar, spider, radial, Gantt, Sankey, bubble, Pareto, funnel, waterfall, trend, comparison, and distribution views.
Marine Navigation Calculators Toolkit
Use practical marine navigation calculators for CPA/TCPA, under-keel clearance, tide windows, route distance, set and drift, fuel range, ETA, anchoring, COLREGs encounter checks, and vessel turning estimates.
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Data & Statistics
Featured
CSV Cleaner
Clean rows, normalize columns, and remove duplicates quickly.
Upload or paste CSV content to detect duplicate rows, empty records, and inconsistent formatting. Normalize headers, trim whitespace, and export a cleaned file in one flow. Useful for marketing, operations, and analytics teams before importing data into other systems.
Data & Statistics
ANOVA One Way Calculator
Run one-way ANOVA summary statistics for multiple groups.
Compute sums of squares, mean squares, and F statistic for one-factor group comparisons.
Data & Statistics
Bar Chart Generator
Create bar charts from labeled values and compare categories at a glance.
Paste labeled values and generate a horizontal bar chart with totals, relative bar lengths, and percentages.
Data & Statistics
Bayes Theorem Calculator
Compute posterior probability from prior, sensitivity, and false positive rate.
Useful for medical test interpretation, risk scoring, and signal-detection decisions.
Data & Statistics
Bubble Chart Generator
Create bubble charts from x, y, and size values.
Paste labeled x/y/size rows and generate a bubble plot to compare position and magnitude together.
Data & Statistics
Chi-Square GOF Calculator
Calculate chi-square goodness-of-fit statistic from observed vs expected counts.
Useful for categorical fit checks and introductory hypothesis testing workflows.
Data & Statistics
Confidence Interval Calculator
Estimate confidence intervals from mean, standard deviation, and sample size.
Calculate margin of error and confidence bounds for common confidence levels. Great for analysis reports, A/B test summaries, and classroom statistics.
Data & Statistics
Confidence Level Z Value Tool
Convert confidence levels to z critical values and margin of error.
Get z* for common and custom confidence levels and estimate margin of error with sigma and n.
Data & Statistics
Donut Chart Generator
Create donut charts from labeled values with configurable center hole.
Paste labeled values and generate a donut chart with percentages, totals, and adjustable hole size.
Data & Statistics
F Test Variance Calculator
Compare sample variances with F statistic and degrees of freedom.
Compute two-sample variance comparison metrics to support homogeneity checks.
Data & Statistics
Funnel Chart Generator
Create funnel charts from stage values and inspect conversion drop-off.
Paste stage-value rows and generate a funnel view with relative widths and stage conversion percentages.
Data & Statistics
Gantt Chart Generator
Create project timeline visualizations.
Generate downloadable Gantt charts for project planning with task timelines, dependencies, and shareable inputs.
Data & Statistics
Geometric Mean Calculator
Find geometric mean for positive-number datasets.
Useful for growth rates, index performance, and multiplicative process summaries.
Data & Statistics
Harmonic Mean Calculator
Calculate harmonic mean for rates and ratios.
Best for averaging speeds, price multiples, and other ratio-based metrics.
Data & Statistics
Heatmap Generator
Create heatmaps from row-column-value data matrices.
Paste row/column/value entries and generate a color-intensity matrix for quick pattern detection.
Data & Statistics
Histogram Generator
Create histograms from numeric samples to view distribution across bins.
Paste numeric values, choose bin count, and generate a histogram with bin ranges, counts, and summary stats.
Data & Statistics
Line Chart Generator
Create line charts from labeled values to visualize change over time.
Paste labeled values and generate a line chart with trend direction, min/max range, and point-by-point output.
Data & Statistics
Moving Average Calculator
Compute rolling averages over a configurable window.
Useful for smoothing noisy series and spotting trend direction.
Data & Statistics
Normal Probability Calculator
Compute probability between two bounds in a normal distribution.
Converts bounds to z-scores and calculates probability mass between them.
Data & Statistics
One-Sample t-Test Calculator
Compute one-sample t-statistic from sample values and hypothesized mean.
Enter sample values and compare against a target mean using the one-sample t-test setup.
Data & Statistics
Pareto Chart Generator
Create Pareto charts with sorted categories and cumulative percentages.
Paste category values to generate a Pareto view with descending bars and cumulative contribution.
Data & Statistics
Pearson Correlation Calculator
Calculate Pearson r and R² from paired X and Y datasets.
Quantify linear relationship strength between two numeric variables.
Data & Statistics
Percentile Rank Calculator
Find percentile rank of a target value within a dataset.
Helpful for score interpretation, benchmarking, and education metrics.
Data & Statistics
Pie Chart Generator
Create pie charts from labeled values and visualize proportional shares.
Paste labeled values and generate a pie chart with percentages, totals, and a clean legend for quick reporting.
Data & Statistics
Poisson Probability Calculator
Calculate exact and cumulative Poisson event probabilities.
Estimate event-count probabilities over fixed intervals when events are rare and independent.
Data & Statistics
Radar Chart Generator
Create radar charts from metric-value pairs across a shared scale.
Paste metric values and generate a radar/spider chart to compare multi-dimensional profiles.
Data & Statistics
Relative Risk Odds Ratio Calculator
Compute RR, OR, and confidence intervals from a 2x2 contingency table.
Analyze exposure-outcome association with relative risk, odds ratio, and 95% confidence bounds.
Data & Statistics
Sample Size Calculator
Estimate required sample size from confidence level, margin error, and proportion.
Supports infinite-population and finite-population adjusted sample size estimates.
Data & Statistics
Sankey Diagram Generator
Visualize flow data with Sankey diagrams.
Create downloadable Sankey diagrams to visualize flows, transfers, and process relationships with shareable input rows.
Data & Statistics
Scatter Plot Generator
Create scatter plots from x,y points to inspect relationships.
Paste x,y points and generate a scatter plot with axis ranges and correlation estimate for quick analysis.
Data & Statistics
Stacked Bar Chart Generator
Create stacked bar charts from grouped segment values.
Paste group, segment, value rows and generate stacked bars with legend and group totals.
Data & Statistics
Tree Map Generator
Visualize hierarchical data with tree maps.
Create downloadable tree maps for hierarchical data visualization with size encoding and shareable input rows.
Data & Statistics
Waterfall Chart Generator
Create waterfall charts from positive and negative step changes.
Paste labeled deltas and generate a waterfall view showing cumulative movement from start to finish.