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Units & Measurement
Open tool Volume Converter
Convert metric, US customary, and separately labelled Imperial capacities through reviewed litre factors.
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Useful tools, ready when you are.
Every card opens a working workspace. Pick the job, use the tool, and move on.
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Civic & Government
Open tool Voter Registration Checklist
Create a bounded, browser-local voter registration checklist with visible assumptions, review guidance, and downloadable output.
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Operations & Infrastructure
Open tool API Rate Limit Calculator
Create a bounded, browser-local api rate limit calculator with visible assumptions, review guidance, and downloadable output.
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Quality Assurance
Open tool API Test Case Builder
Create a bounded, browser-local api test case builder with visible assumptions, review guidance, and downloadable output.
Ready to use
Quality Assurance
Open tool API Test Data Builder
Create a bounded, reviewable api test data builder with visible assumptions, downloadable output, and accountable human review.
Ready to use
File Converters
Open tool ASS Subtitle to CSV
Convert ASS Subtitle into CSV locally, with explicit format controls, bounded validation, a reviewable preview when practical, and a separately named download.
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File Converters
Open tool ASS Subtitle to JSON
Convert ASS Subtitle into JSON locally, with explicit format controls, bounded validation, a reviewable preview when practical, and a separately named download.
Ready to use
Fashion & Personal Style
Open tool Bra Size Converter
Create a demand-focused, browser-local bra size converter with clear inputs, field hints, review guidance, and practical output.
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Calculators
Open tool Break-even Point Calculator
Find units and revenue needed to cover fixed costs before profit begins.
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Quality Assurance
Open tool Browser Compatibility Matrix
Create a bounded, browser-local browser compatibility matrix with visible assumptions, review guidance, and downloadable output.
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Finance & Business
Open tool Cash Conversion Cycle Planner
Create a bounded, browser-local cash conversion cycle planner with visible assumptions, review guidance, and downloadable output.
Ready to use
Finance & Business
Open tool Cash Interest Coverage Ratio Calculator
Compare reconstructed pre-interest, pre-tax operating cash capacity with cash interest.