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Data & Reference

Data conversion, reference, charting, time and browser media utilities.

Data & Reference

Billboard Chart Search Helper

Build targeted chart-history searches for Billboard Hot 100 artist, title or date research.

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Universal Code Validator

Validate Luhn numbers, EAN-13, ISBN, ISSN and basic IBAN structure.

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Graph & Chart Maker

Create a downloadable bar or line chart from labels and values.

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Pet First Aid Reference

View general emergency first-aid reminders for pets and when to contact a veterinarian.

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Plant Hardiness Zone Reference

Map average annual minimum temperature to a USDA-style hardiness zone.

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Screen Video Recorder

Record a screen, application window or browser tab locally using the browser MediaRecorder API.

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This Day in History

Look up historical events for a selected date using a public encyclopedia endpoint when available.

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Timezone Converter

Convert a date and time between IANA time zones using the browser.

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