This study is a descriptive survey model which aims to reveal the measurement estimation abilities of secondary school students. The sample of the study consisted of 91 secondary school students at 5th, 6th, 7th and 8th grades in the province of Adana. Measurement estimation ability test was used as the data collection tool. This test is comprised of 10 items which include five measurement estimation abilities as measurement of length, area, volume, liquid and weight. The data obtained from the data collection tool was analyzed by quantitative analysis methods. The analysis results showed that the students' measurement estimation abilities differed according to their gender and that difference was not statistically significant. It was also observed that the students' levels of measurement estimation abilities were at "acceptable low estimation" level, their general performances in the measurement estimation test differed according to their grade levels and that difference was not significant. Moreover, it was concluded that the length and weight estimation levels of the students regarding length, area, volume, liquid, weight estimation scores were better than the estimation levels of area, volume, fluid. Although their levels increased according to their grade levels, it was not significant according to grade level.