calculators
Age Calculator
Calculate age in years, months, days, and total days between two dates.
Dates are interpreted as calendar dates, not timestamps, to avoid timezone shifts.
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Date Difference Calculator
Calculate the exact difference between two calendar dates in days, weeks, and months.
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Calculate hours, minutes, and seconds between two times, including overnight spans.
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Unix Timestamp Converter
Convert Unix timestamps and dates between local time and UTC.
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Aspect Ratio Calculator
Calculate, simplify, and resize dimensions while preserving an aspect ratio.