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Age Calculator & Days Between Dates

Compute exact age (years + months + days) from a birth date, or days between any two dates. Shows total days/weeks/hours lived, days until next birthday, weekday born.

All tools Browser-only

Mode: Calculate age Days between 2 dates

Date of birth As of

Age

—

Total days

—

Total weeks

—

Total hours

—

🎂 Next birthday: —

📅 Born on a: —

Features

Age: exact years + months + days from birth date, plus total days/weeks/hours lived and days until next birthday.
Days between: count days between any two dates — useful for project deadlines, anniversaries, contracts.

Who this is for

Vietnamese users needing quick calculations in local context: salary, PIT, loan interest, BMI, bill splitting, FX rates.

FAQ

Which year do the tax/SI rates apply?

Vietnam 2026 regulations: SI 8%, HI 1.5%, UI 1%, progressive PIT 7 brackets. Updates within 48h of regulation changes.

Can results be used officially?

Estimates are accurate for typical scenarios. For contracts/year-end settlements, consult an accountant.

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