How to Use This Time Converter

Whether you are calculating the milliseconds of a computer process or figuring out exactly how many hours are in a century, our free Time Converter makes switching between temporal units instant and effortless. Calculations happen in real-time as you type.

Step-by-Step Guide:

• Enter Your Duration: Type the numerical value you wish to convert into the "Amount" box.
• Select Your Units: Choose your starting unit from the "From" dropdown, and your target unit from the "To" dropdown. We support everything from Picoseconds to Centuries.
• Watch it Sync: The tool instantly outputs your exact converted time in the highlighted results box below, along with the single-unit mathematical ratio.
• Swap Direction: Click the circular ⇄ button between the dropdowns to instantly reverse the conversion (e.g., switch from Days-to-Hours to Hours-to-Days).

Common Time Conversion Formulas

If you prefer to calculate time durations manually, here are the standard mathematical equations:

• Days to Hours: hr = d × 24
• Hours to Minutes: min = hr × 60
• Minutes to Seconds: s = min × 60
• Seconds to Milliseconds: ms = s × 1,000
• Years to Days: d = yr × 365.24 (accounting for leap years)

Quick Reference Chart

• 1 Century = 100 Years
• 1 Year = 12 Months = 365.24 Days
• 1 Day = 24 Hours = 1,440 Minutes = 86,400 Seconds
• 1 Second = 1,000 Milliseconds (ms) = 1,000,000 Microseconds (μs) = 1,000,000,000 Nanoseconds (ns)