estimation

US /ˌes.təˈmeɪ.ʃən/
UK /ˌes.təˈmeɪ.ʃən/
"estimation" picture
1.

a judgment or opinion about the worth, value, or quality of something or someone

:
In my estimation, the project will be completed on time.
He holds her in high estimation.
2.

the process of calculating or judging the size, amount, or nature of something without measuring it exactly

:
The architect provided an estimation of the construction costs.
Accurate estimation is crucial for project planning.