Unix Timestamp Calculator

Convert a date-time to Unix epoch seconds.

Scratchpad (not saved)

Save to create a persistent, shareable workspace.

Recommended Tools

Some links below are affiliate links. As an Amazon Associate, MCPCalc earns from qualifying purchases, at no extra cost to you. Learn more.

Code (Petzold) - How binary, logic gates and Boolean algebra build a computer, explained from scratch.

What This Calculator Does

Convert a date-time to Unix epoch seconds.

It combines Year, Month, Day, Hour to estimate Unix Timestamp.

Formula & Method

Core equations: Unix seconds:

ts=\left\lfloor\frac{t_{UTC}-1970\text{-}01\text{-}01T00:00:00Z}{1s}\right\rfloor

Notation used in the formulas: $R$ = Unix Timestamp; $x_{1}$ = Year; $x_{2}$ = Month; $x_{3}$ = Day; $x_{4}$ = Hour; $x_{5}$ = Minute.

Method summary: inputs are normalized to consistent units, core equations are evaluated, then secondary values are derived and rounded for display.

Use this calculator for quick scenario analysis. Start with baseline values, change one driver at a time, and compare how sensitive the results are to each input shown above.

Inputs Used

Year: Used directly in the calculation.
Month: Used directly in the calculation.
Day: Used directly in the calculation.
Hour: Used directly in the calculation.
Minute: Used directly in the calculation.

Related Calculators

Date Difference Calculator - Compute days, weeks, and approximate months between two dates.
Add/Subtract Days Calculator - Find a future or past date by adding or subtracting days.
Age Calculator - Calculate exact age from birth date to a reference date.
Weekday Finder - Find the day of week for any calendar date.
Work Days Calculator - Count business days between two dates excluding weekends.
Time Zone Converter - Convert a time between UTC offsets.
Countdown Calculator - Count down days remaining until a target date.
Time Duration Calculator - Compute hours and minutes between two times.