**Microstrip Impedance Calculator** is an online electronic tool to measure the impedance of the transmission strip. Microstrip is the conducting medium used to transmit the electric signals at microwave frequency and fabricated using PCB - printed circuit board. Usually Microstrip separated from the ground by using dielectric substrate to avoid the unnecessary interferences. Microstrips are very lighter and low power consuming components used in microwave technology such as antennas, couplers etc. When designing Microstrip components, calculating microstrip impedance is more significant. By using this microstrip impedance calculator, one can compute the opposition to alternating current based on the input values of trace width, thickness, dielectric thickness, and dielectric constant. The impedance always represented by **Z**. It can be derived from the mathematical formula

Where

w is the strip width

t is the strip thickness

h is the dielectric thickness

E_{r} is the dielectric constant

Z_{0} Impedance of Free Space