Done

⏱️ Time Converter

Convert between seconds, minutes, hours, days, weeks, months, years, milliseconds, microseconds & nanoseconds. Instant results, human-readable breakdown.

Convert Time
Value
From
Quick Values
Quick Reference
DurationSecondsMinutesHoursDays
Conversion Log
; TechOreo — Time Converter
; Nanoseconds ↔ Centuries and everything between
; ──────────────────────────────────────
; Enter a value to start converting
History
No conversions yet
Time Facts
⚡ Light travels 1 foot in ~1 nanosecond.
💓 Average heartbeat: ~0.86 seconds.
🌍 One day = 86,400 seconds.
📅 One year ≈ 31,557,600 seconds.
🦕 Dinosaurs went extinct ~66 million years ago.
🌌 Universe age: ~13.8 billion years.
🔬 A "jiffy" in computing = 10 ms.
Shortcuts
↵Convert
Alt+CCopy all
Alt+SSwap units
Alt+XClear
Time Units
Nanosecond10⁻⁹ s
Microsecond10⁻⁶ s
Millisecond10⁻³ s
SecondSI base unit
Minute60 s
Hour3,600 s
Day86,400 s
Week604,800 s
Month≈30.4375 days
Year365.25 days
Decade10 years
Century100 years
Privacy
🔒 100% Client-Side
All conversions run in your browser. Nothing sent to any server.

About Time Conversion

Why Convert Time?

Time conversion is essential in science, engineering, programming, project management, and everyday life. Different contexts use different units — from nanoseconds in computing to years in astronomy.

SI Base Unit

The second is the SI base unit of time, defined by 9,192,631,770 periods of cesium-133 atom radiation. All other time units derive from seconds.

Year Definition

This tool uses the Julian year (365.25 days) for year-based calculations, which averages leap years. A month is calculated as 1/12 of a year (≈30.4375 days).

Computing Time

In computing, milliseconds (ms) measure latency, microseconds (μs) measure CPU operations, and nanoseconds (ns) measure memory access. Understanding these scales is crucial for optimization.