Crane Load Chart Calculator

Crane capacity at radius from boom length and load.

Max capacity (lb)

Boom length (ft)

Working radius (ft)

Load weight (lb)

Rigging weight (lb)

Tab to move between fields

Capacity at radius (lb)

27,500

Utilization (%)38.18

Safe working load (lb)23,375

Net capacity (lb)27,000

Overloaded (0/1)0

Is Above Safe LimitNo

How to Use This Calculator

Enter the crane's maximum rated capacity (lb) from the load chart at minimum radius.
Set the current boom length (ft) for the configuration you are using.
Enter the working radius (ft) — the horizontal distance from the crane's center of rotation to the load.
Input the load weight (lb) and rigging weight (lb) to calculate total suspended load.
Check Capacity at radius (lb) and Utilization (%) to confirm the lift is within the safe working load; a result of 1 in Overloaded means the lift must not proceed.

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