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Everyday Utilities
Open tool Time Zone Converter
Create a bounded, browser-local time zone converter with visible assumptions, review guidance, and downloadable output.
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Automotive & Vehicles
Open tool Tire Replacement Planner
Create a bounded, browser-local tire replacement planner with visible assumptions, review guidance, and downloadable output.
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SEO & Marketing
Open tool Value Proposition Canvas
Structure reviewed customer jobs, pains, gains, audience, and offer details for team discussion.
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File Converters
Open tool VCard to Excel
Project ten common fields from up to one thousand vCards into a filterable XLSX worksheet.
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Enterprise IT
Open tool Acceptable Use Policy Builder
Create a bounded, editable acceptable use policy builder from supplied enterprise IT data with transparent rules and operational safeguards.
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Math, Statistics & Probability
Open tool Angle Between Vectors Calculator
Calculate angle between vectors with guided inputs, visible equations, substituted working, and model assumptions.
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Physics
Open tool Angular Momentum Calculator
Calculate angular momentum with guided inputs, visible equations, substituted working, and model assumptions.
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Finance & Business
Open tool Annual Recurring Revenue Growth Calculator
Compare two consistently defined ARR snapshots by amount and percentage.
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Units & Measurement
Open tool Area Converter
Convert complete surface areas through reviewed square-metre factors without manually squaring a length result.
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File Converters
Open tool ASS Subtitle to ODT
Convert ASS Subtitle into ODT 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 SRT
Convert ASS Subtitle into SRT 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 XML
Convert ASS Subtitle into XML locally, with explicit format controls, bounded validation, a reviewable preview when practical, and a separately named download.