hRs

hrs is a common abbreviation for hours, a unit of time. An hour is traditionally defined as 60 minutes or 3,600 seconds. Although the SI unit for time is the second, hours are widely used for everyday timekeeping, scheduling, and measuring longer durations such as work shifts, travel times, and events. The plural form hrs is frequently seen in tables, timetables, dashboards, and informal writing. In formal prose, the word hours or the symbol h is often preferred, while in compact data displays hrs may be used for brevity.

Notation and usage vary by context. The abbreviation is typically written with a lowercase h for the singular unit, and the plural is usually hrs in many style guides, with a space between the number and the unit (for example, 5 hrs). Some contexts or brands may omit the space, writing 5hrs, but this is less common in formal writing.

Conversions are straightforward. 1 hour equals 60 minutes and 3,600 seconds. Therefore, n hours equal n×60 minutes or n×3,600 seconds. For fractional hours, decimal notation is common (for example, 1.5 hrs equals 1 hour and 30 minutes).

Other uses: In uppercase form, HRS can be an acronym that denotes various organizations, terms, or concepts unrelated to time. The meaning depends on context, and it is distinct from the time unit described here.