Optimal synthesis of mechanisms is a successful approach for mechanism design to satisfy all the desired characteristics of the designed m echanism. Toggles have wide industrial applications such as riveting, punching, pressing, and clamping. The toggle optimal design problem is a constrained multi - dimensional problem. Powell optimization technique is used to maximize the mechanical advantag e of the toggle. 2 functional constraint functions are used to perform a successful optimization. The toggle force analysis in the static mode is performed in a dimensionless form. The results are tabulated for an easy reference to them without any calcul ations for any desired mechanical advantage of the toggle. Mechanical advantage in the range of 3.9 to 340 is selectable for specific constraints on the toggle input link length and operating conditions of the toggle. Using the optimal design table could satisfy the toggle objectives with errors less than 0.3 %