Measuring capacitor%5C%27s capacitance sometimes cannot be done on simple multi-meter. These meters are not equipped with the capacitance meter function found on expensive multi-meter. With the advancing technology in IC integration%2C many micro-controller vendors have provided %5C%22on-chip timer%2Fcounter%5C%22 %28like ATMEL%29%2C that will cut cost on producing a simple capacitance meter. Capacitance is measured by pulse width that is constructed from a multi-vibrator. The ATMEL AT89C2051%5C%27s %5C%22on- chip timer%2Fcounter%5C%22 is used to measure%2C and calculated pulse width%2C then result is shown on a seven segments display. A simple prototype based on the AT89C2051 is able to measure capacitor ranging from 1nF to 470uF.