estimation
nounUK /ˌestɪˈmeɪʃn/
US /ˌestɪˈmeɪʃn/
A guess about how much or how many of something there is.
My estimation is that there are about fifty jelly beans in the jar.
RELATED WORDS
OTHER MEANINGS
2. The opinion or judgment you have about someone or something.
She is held in high estimation by her teachers.
3. The act of carefully calculating the cost or value of something.
The builder gave us an estimation of the repair costs.
4. A rough figure worked out from the information you have.
By his estimation, the trip would take three hours.