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⏱️ Time Converter

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

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Duration Seconds Minutes Hours Days
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; IndexCraft — Time Converter
; Nanoseconds ↔ Centuries and everything between
; ──────────────────────────────────────
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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.
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Time Units
Nanosecond 10⁻⁹ s
Microsecond 10⁻⁶ s
Millisecond 10⁻³ s
Second SI base unit
Minute 60 s
Hour 3,600 s
Day 86,400 s
Week 604,800 s
Month ≈30.4375 days
Year 365.25 days
Decade 10 years
Century 100 years
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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.