Date
7 tools
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Tools7
RT-FUN-001 Age Calculator
Calculate your exact age in years, months, days — and find out what day you were born.
Fun & Misc
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RT-FAM-006 Age Difference Calculator
The exact age gap between two people, to the day
Family & Heritage
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RT-CNV-087 Date Add/Subtract Calculator
Date arithmetic + day of week
Converters & Units
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RT-CNV-085 Date Difference Calculator
Days/months/years between dates
Converters & Units
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RT-CNV-101 Japanese Era Converter
Reiwa, Heisei, Shōwa, Taishō and Meiji dates to Gregorian and back — exact at every changeover
Converters & Units
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RT-CNV-088 Week Number Calculator
ISO 8601 + US week numbering
Converters & Units
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RT-CNV-086 Working Days Calculator
Business days with ASEAN holidays
Converters & Units
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