Calculate tip and split the bill between friends.
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Exact age in years, months, days and days until birthday.
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Convert length, weight, volume and temperature.
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Trip fuel cost and gas vs ethanol comparison.
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Calculate delivery in business or calendar days.
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Monthly electricity cost by appliance and usage.
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Cooking volumes, imperial/metric length, weight and area.
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Convert seconds, minutes, hours, days, weeks and years.
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