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Calculators
Open tool Contribution Margin Calculator
Measure revenue remaining after variable costs as an amount and percentage.
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Productivity & Business Ops
Open tool First Pass Yield Calculator
Measure units meeting a process requirement on the first attempt without rework.
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Finance & Business
Open tool Days Inventory Outstanding Calculator
Derive average inventory holding days from matching inventory, cost flow, and period length.
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File Converters
Open tool JSON to Excel
Convert a bounded flat JSON record array into a typed, filterable XLSX worksheet locally.
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Tax, Payroll & Benefits
Open tool Salary Cost Calculator
Create a bounded, browser-local salary cost calculator with visible assumptions, review guidance, and downloadable output.
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Developer & Data
Open tool JSON Validator
Validate JSON syntax and report its root type, depth, and structural counts.
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Calculators
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Ecommerce & Marketplace
Tools for sellers, catalog managers and online brands.
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File Converters
Safe format conversion beyond the PDF and image family.
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Productivity & Business Ops
Templates, generators and workflow helpers.
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Core document conversion, editing, signing and OCR.
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