Capacity calculator I know my sling size. How much can it lift? Before using the calculatorConsider the following factors for accurate results and safe rigging:load weight (tonnes) – consult your supervisor if unsureapplication requirements (single- or multi-leg, basket or choke hitch)additional Reeve Factors may apply (25% for round loads and up to 50% for square loads) on multi-leg slingsheadroomfrequency of use and expected sling lifetype of load and surface finishsling length and slinging methodsenvironmental factors (corrosion, heat, sharp edges) Dogging and rigging Guide Calculators Sling calculator Capacity calculator Video tutorials Contact us Start using the capacity calculatorFind out how much your sling can lift. Related information GlossaryVideo tutorialsContact the Dogging and Rigging team