zippydevtoolsDate & Time
Conversions between epoch values and readable dates
Convert, compare, and count dates for release planning, logs, age checks, deadlines, and timestamp debugging. Start by choosing whether you need a human-readable date, an epoch value, or a difference between two dates.
Priority tools
Start with the most common workflows in this category, then move to adjacent tools when needed.
Age Calculator
Calculate age in full years and total days from a birth date up to today.
Day Counter
Calculate the number of calendar days between two dates.
Date to Epoch
Convert a readable date or ISO string into an epoch timestamp.
Epoch to Date
Convert epoch values into readable UTC dates.
Days Until Date
Calculate how many days are left until a target date or how many days have already passed.
Recommended workflows
Contextual links for combining tools without leaving the cluster.
Debug timestamps from logs
Convert epoch values into readable dates, then convert a corrected date back to epoch when updating fixtures or API examples.
Plan deadlines and durations
Count days between milestones or calculate days until a target date before sharing schedules or release plans.
Check age-related assumptions
Calculate completed age from a birth date, then use day counting when the workflow needs an exact elapsed duration.
Age Calculator
Calculate age in full years and total days from a birth date up to today.
Day Counter
Calculate the number of calendar days between two dates.
Epoch to Date
Convert epoch values into readable UTC dates.
Date to Epoch
Convert a readable date or ISO string into an epoch timestamp.
Days Until Date
Calculate how many days are left until a target date or how many days have already passed.