Shadbala is the classical six-fold measure of a planet's strength — Sthana, Dig, Kala, Cheshta, Naisargika and Drik Bala — summed and expressed in units called Rupas. This tool computes all six components for each of the seven planets in your chart and compares each total against the minimum strength that planet is required to have.
Each planet earns strength from six independent sources. Their sub-strengths are calculated in Virupas and added together to give that planet's total Shadbala.
The six balas are summed into a total measured in Rupas, where 1 Rupa equals 60 Virupas. A planet is judged strong when its total meets or exceeds the minimum laid down in the Brihat Parashara Hora Shastra.
Each planet has its own minimum in Rupas — Mercury 7.0, Sun and Jupiter 6.5, Moon 6.0, Venus 5.5, and Mars and Saturn 5.0. A total at or above that threshold is considered strong.
A Rupa is the unit Shadbala is measured in, equal to 60 Virupas. The six component strengths are each computed in Virupas, added together, and then expressed in Rupas.
Cheshta (motional) Bala applies to the five star planets — Mars, Mercury, Jupiter, Venus and Saturn — from their speed and retrogression. The Sun and Moon are given Ayana and Paksha Bala instead.
Comprehensive multi-chapter analysis: charts, all dashas, strengths, yogas, doshas, life areas, longevity & remedies.
For educational purposes. Astrological interpretations are traditional and not a substitute for professional advice.