Attosecond to Second Converter (and vice versa)
Created by: tinycalcs.com/en
Number of supported units: 2
Last update: 2026
This converter allows you to convert attoseconds [as] to seconds [s] or seconds [s] to attoseconds [as]. Calculations are performed in both directions. The calculation result and the entered value are displayed with up to 20 decimal places for maximum accuracy.
Convert attoseconds to seconds
There are two simple ways to convert attoseconds [as] to seconds [s]. In the first calculation method, the value in attoseconds [as] is divided by 1018. The second method multiplies the value in attoseconds [as] by 10-18.
- Seconds [s] = attoseconds [as] ÷ 1018
- Seconds [s] = attoseconds [as] * 10-18
Convert seconds to attoseconds
Converting seconds [s] to attoseconds [as] is easy and can be done in two ways. The first method involves multiplication, whereby the value in seconds [s] is multiplied by 1018. The second variant is a division. Here, the value in seconds [s] is divided by 10-18.
- Attoseconds [as] = seconds [s] * 1018
- Attoseconds [as] = seconds [s] ÷ 10-18
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