Dates & Time tools
Convert timestamps, calculate durations and date differences, and reason about time zones and UTC without sending any input to a server.
10 tools in this category, all running in your browser.
Tools in Dates & Time
Age Calculator
/tools/age-calculator/Calculate an exact age in years, months, and days for any reference date.
Date Calculator
/tools/date-calculator/Compute the number of days between two dates or add a number of days to a date.
Timestamp Converter
/tools/timestamp-converter/Convert between Unix timestamps in seconds or milliseconds and ISO-8601 instants.
Cron Expression Generator
/tools/cron-expression-generator/Validate a five-field cron expression, describe it, and list its next run times.
Timezone Converter
/tools/timezone-converter/Convert an instant between IANA timezones with offset, DST and day-shift.
World Clock
/tools/world-clock/Show the current time in any set of IANA timezones.
Business Day Calculator
/tools/business-day-calculator/Count or add business days across weekends and holidays.
ISO 8601 Parser
/tools/iso-8601-parser/Parse ISO 8601 dates, times, durations and intervals into their parts.
Relative Time
/tools/relative-time/Describe the distance between two instants in words and parts.
Duration Calculator
/tools/duration-calculator/Compute a calendar duration between instants or apply one to a date.
Related categories
Developer
184 tools
Calculators
53 tools
Generators
45 tools
Related tools
Related to tools in Dates & Time, derived from the tool metadata.
Percentage Calculator
/tools/percentage-calculator/UUID Generator
/tools/uuid-generator/
Related guides & references
Guides and references covering tools in Dates & Time, derived from the tool and content metadata.
How to Calculate the Difference Between Two Dates
/article/date-differences-guide/ISO 8601 and Unix Time
/article/iso-8601-unix-time/Writing Markup and Data Safely in the Browser
/article/browser-editor-guide/Browser Preview and Sanitization Reference
/article/browser-editor-reference/