Tools and Calculators

Our HIRB Calculator makes it easy to determine if your building complies with district plan rules for height in relation to boundary. Simply input a few heights and levels and receive quick and accurate results to help inform your project.

Our AHIRB Calculator is specific to those working under the Auckland Unitary Plan (Operative in Part) and designing to comply with the control in MHU, MHU or THAB. Input a few details and quickly determine compliance.

Our Gradient Converter is the perfect tool to quickly and easily convert between percentage and ratio, depending on your needs. Whether you're working with district plan rules, transport and traffic considerations, or simply need to determine the slope of an area, our Gradient Converter has you covered.

Our slope over distance calculator is a quick and easy way to determine the slope of a line when given two points on the line. Simply enter the coordinates of the two points, and the calculator will automatically return the slope in the form of a ratio.

This calculator assesses compliance of ramp proposals with Auckland Unitary Plan Standard E27.6.4.4(2), which sets limits on change in gradient of ramps. It calculates change in gradient at the sag and summit and determines compliance with the standard.