Convert between milliseconds, seconds, minutes, hours, days, and years — time units used in virtually every laboratory protocol. Enter a value in any unit and all other fields update automatically, saving you from manual conversion calculations when following protocols or reporting results in different unit systems.

Conversion Formulas

• 1 second = 1000 milliseconds
• 1 minute = 60 seconds
• 1 hour = 60 minutes
• 1 day = 24 hours
• 1 year ≈ 365.25 days (accounts for leap years)

These are the basic conversion factors used in the converter. Note that the year calculation is an approximation, as the exact length of a year varies slightly.