Dates & time/12 tools

Dates & time

Calculate dates, convert time zones, and create calendars.

Runs on your deviceFree. No account needed.

Pet Age CalculatorDates & timeCompare approximate cat or dog ages with human years using an explicit, reversible model.

Clock VisualizerDates & timeDraw analog or digital time, compare hand angles and mirror a clock.

Life CalendarDates & timeVisualize a chosen planning horizon in weeks or months.

Interval VisualizerDates & timeDraw date or clock-time ranges and points on a shared axis.

Unix Timestamp ConverterDates & timeConvert timestamps and dates in batches, with explicit seconds, milliseconds, microseconds or nanoseconds.UNIXUTC

Date Difference CalculatorDates & timeCount calendar days, include the end date, or measure actual elapsed time across time zones.

Date CalculatorDates & timeAdd or subtract years, months, weeks and days with an explicit rule for missing month-end dates.

Time Zone ConverterDates & timeConvert local date-times between IANA time zones and resolve skipped or repeated daylight-saving times explicitly.

Duration ConverterDates & timeConvert, sum or subtract fixed durations, including decimal units, ISO 8601 and HH:MM:SS.

Calendar GeneratorDates & timeCreate a month or year calendar, choose the week start, and save an accessible printable calendar.

Date & Time FormatterDates & timeConvert and validate explicit date or clock formats, sort a batch, and inspect calendar facts.

Date Sequence GeneratorDates & timeGenerate date ranges, monthly schedules, clock times or exact Unix timestamp sequences.