Second to Day Converter
1 s = 0.000012 d — convert instantly with formula and table.
Type a value above and it converts instantly — no button to press, no page reload, and the math runs entirely in your browser.
Quick answer: one second equals 0.00001157 days. So to convert seconds to days, multiply by 0.00001157.
How to convert seconds to days
days = seconds × 0.0000115741
The second is the SI base unit of time, defined by 9,192,631,770 oscillations of a cesium atom — the tick behind every clock on Earth.
The civil day is exactly 86,400 seconds. Earth's actual rotation drifts slightly, which is why leap seconds occasionally exist.
Second to Day conversion table
| Second (s) | Day (d) |
|---|---|
| 0.01 s | 0.00000012 d |
| 0.1 s | 0.00000116 d |
| 0.25 s | 0.00000289 d |
| 0.4 s | 0.00000463 d |
| 0.75 s | 0.00000868 d |
| 1.25 s | 0.00001447 d |
| 1.75 s | 0.00002025 d |
| 2.5 s | 0.00002894 d |
| 3.5 s | 0.00004051 d |
| 4.5 s | 0.00005208 d |
| 6 s | 0.00006944 d |
| 8 s | 0.00009259 d |
| 10 s | 0.00011574 d |
| 12 s | 0.00013889 d |
| 14 s | 0.00016204 d |
| 16 s | 0.00018519 d |
| 18 s | 0.00020833 d |
| 20 s | 0.00023148 d |
| 24 s | 0.00027778 d |
| 26 s | 0.00030093 d |
| 30 s | 0.00034722 d |
| 35 s | 0.00040509 d |
| 45 s | 0.00052083 d |
| 55 s | 0.00063657 d |
| 65 s | 0.00075231 d |
| 75 s | 0.00086806 d |
| 85 s | 0.0009838 d |
| 95 s | 0.0011 d |
| 110 s | 0.001273 d |
| 125 s | 0.001447 d |
| 175 s | 0.002025 d |
| 250 s | 0.002894 d |
| 350 s | 0.004051 d |
| 450 s | 0.005208 d |
| 600 s | 0.006944 d |
| 750 s | 0.008681 d |
| 900 s | 0.010417 d |
| 1,500 s | 0.017361 d |
| 2,500 s | 0.028935 d |
| 10,000 s | 0.115741 d |
Need the opposite direction? Use the Day to Second converter, or read our complete guide to time conversions for every formula in one place.
Frequently asked questions
How many days are in one second?
One second equals 0.00001157 days. Multiply any second value by 0.00001157 to get days.
What is 10 seconds in days?
10 seconds equal 0.00011574 days (10 × 0.000012).
Is the second to day conversion exact?
The conversion factor used here (0.0000115741) is based on the internationally agreed definitions of both units, so results are exact up to rounding of the final decimal places.
Is my data stored when I use this converter?
No. The conversion runs entirely in your browser with JavaScript — nothing you type is sent to a server, logged or stored.