Days to Seconds Converter
Instantly translate any number of days into total seconds for project timelines, uptime guarantees, or scientific observations.
Results assume the standard civil day of 86,400 seconds and do not adjust for leap seconds or planetary variations.
Examples
- 1 day ⇒ 86,400 seconds
- 2.75 days ⇒ 237,600 seconds
- 0.042 day ⇒ 3,628.8 seconds
- 14 days ⇒ 1,209,600 seconds
FAQ
Can I convert business days or custom schedules?
Enter the exact number of elapsed calendar days. For business days, convert them to calendar days first based on your workweek.
How precise is the output?
The calculator multiplies by the constant 86,400 seconds per day, so the precision matches the decimals you provide.
Does this include leap seconds or sidereal days?
No. It assumes the standard civil day length. Use a specialized astronomy tool if you need to model leap seconds or sidereal rotation.
Additional Information
- 1 day = 24 hours = 1,440 minutes = 86,400 seconds, so multiplying days by 86,400 gives the exact second count.
- Fractional inputs are supported—0.25 day returns 21,600 seconds and 0.001 day returns 86.4 seconds.
- Use this conversion when exporting schedule data, configuring automation delays, or comparing celestial event durations.