Measurement Category Hub
Time & Duration Converters & Calculators
Convert durations between milliseconds, seconds, minutes, hours, days, weeks, standard months, and years with explicit calendar assumptions. Use our universal interactive time & duration calculator below or select one of our dedicated conversion shortcuts.
Time & Duration
(ms)
Example: 10 ms
(s)
e.g. 0.01s
Standard: Category Base Standard (s)
Enter any number above to convert Milliseconds to Seconds. Click (i) for brief unit info.
Popular Time & Duration Conversions
4 dedicated toolsHours to Minutes Converter
Convert time intervals from hours (hr) to minutes (min).
minutes = hours × 60
Minutes to Hours Converter
Convert minutes (min) to decimal hours (hr).
hours = minutes ÷ 60
Minutes to Seconds Converter
Convert minutes (min) to SI seconds (s).
seconds = minutes × 60
Seconds to Minutes Converter
Convert SI seconds (s) to minutes (min).
minutes = seconds ÷ 60
Supported Time & Duration Units & Standards
| Unit Name | Symbol | Type / System | Relative Value |
|---|---|---|---|
Millisecond | ms | Derived Unit | 1 ms = 0.001 base |
SecondBase SI | s | SI Standard Unit | 1 s = 1 base |
Minute | min | Derived Unit | 1 min = 60 base |
Hour | hr | Derived Unit | 1 hr = 3600 base |
Day | d | Derived Unit | 1 d = 86400 base |
Week | wk | Derived Unit | 1 wk = 604800 base |
Month (Average Gregorian 30.44 days) | mo | Derived Unit | 1 mo = 2629746 base |
Year (Standard 365 days) | yr | Derived Unit | 1 yr = 31536000 base |
Time & Duration FAQs
In the International System of Units (SI) or standard physical conventions, the base reference unit is Second. All linear conversions within this category are mathematically derived from this base factor.