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The tilt angle, current helicity and twist of solar magnetic fields can beobserved in solar active regions. We carried out estimates of these parametersby two ways. Firstly, we consider the model of turbulent convective cells(super-granules) which have a loop floating structure towards the surface ofthe Sun. Their helical properties are attained during the rising process in therotating stratified convective zone. The other estimate is obtained from asimple mean-field dynamo model that accounts magnetic helicity conservation.The both values are shown to be capable to give important contributions to theobservable tilt, helicity and twist.

Estimates of current helicity and tilt of solar active regions and Joy's law