Tools and Calculators

  • RMA Timeframes Calculator

    The RMA Timeframes Calculator is designed to help you quickly determine the number of working days within a specified timeframe, considering weekends and holidays. Please input your desired start and end dates to get accurate results tailored to your needs.
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  • House in Auckland constructed closed to boundaries

    Height in Relation to Boundary (HIRB) Calculator

    Calculate a recession-plane envelope from ground levels, setback and angle, and compare a proposed building point with a labelled diagram.

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  • Apartment Building using THAB

    Alternative Height in Relation to Boundary (AHIRB) Calculator

    Explore baseline Auckland Unitary Plan AHIRB profiles for MHS, MHU and THAB, including frontage position and ground-level differences.

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  • Sloping driveway up a hill

    Gradient Converter: Ratio, Percentage and Degrees

    Convert gradients between rise:run ratios, percentages and degrees, with clear handling of rising, falling and level slopes.

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  • White vehicle parked in a driveway

    Slope over Distance Calculator

    Calculate the gradient between two ground levels using a horizontal distance in metres or millimetres.

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  • Underground car park with ramp

    Ramp Gradient Transition Calculator

    Check changes in ramp gradients against AUP E27.6.4.4(2) and identify sag or summit junctions that require transitions.

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