Free element spacing calculator
Free online calculator. Calculate the number of elements, gaps and positions from the start.
Measure D between the centres of the outermost elements. There is one more element than interval. Clear gap = centre spacing minus element width. For battens, enter the spacing range specified by the roofing manufacturer and measure the first and last positions from the same origin. This tool does not select structural spacing or a roofing system. In between-post modes, D is the clear opening between inner post edges. For n elements of width W, equal gap = (D − n × W) / (n + 1), including both ends. Centre positions start at the left opening edge. Other modes measure between outermost element centres.
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