Shadbala Calculator

What is Shadbala?

Shadbala — literally "six-fold strength" — is a classical Vedic astrology system for measuring how strong or capable each planet is in a given birth chart. Rather than reading a planet's placement in isolation, Shadbala combines six separate strength measures into a single composite score for each of the seven classical planets, expressed traditionally in units called Rupas (each Rupa equalling 60 Shashtiamshas).

The idea is straightforward: a planet that rules an important house in your chart can only deliver its promised results well if it is itself strong. A weak planet — even one ruling a favourable house — may struggle to give its full effect, while a strong planet tends to perform more reliably, for better or worse depending on what it signifies.

How to read planetary strength (Shadbala) — step by step

1. Enter your date, time and place of birth. Shadbala depends on exact planetary positions and the local time of birth, since several of the six balas are time-sensitive.
2. Each of the six balas is calculated separately for every planet — positional, directional, temporal, motional, natural and aspectual strength (see below).
3. The six are summed into a total score for each planet, usually compared against a classical minimum requirement (each planet has its own traditional threshold, e.g. the Sun needs roughly 5 Rupas, the Moon roughly 6).
4. Compare planets against each other and against the minimum. A planet scoring comfortably above its required minimum is considered functionally strong; one scoring well below it is considered weak, regardless of how favourably it is otherwise placed.
5. Read the score alongside house lordship. The calculator above computes all six balas and the total for each planet from your birth details — use the total together with which houses that planet rules to judge how well it can deliver its results.

The six components of Shadbala

Why Shadbala matters

Shadbala is one of the most methodical tools classical Vedic astrology offers for comparing planets objectively, rather than relying on placement alone. It is commonly used to judge which planet in a yoga or combination is likely to dominate the result, to weigh conflicting significations when two planets point in different directions, and to assess how well a planet can perform during its own dasha period. Strength is one lens among several, though — house lordship, aspects, the running dasha and yogas such as Raj Yoga all need to be weighed together for a complete reading. Explore your full kundli or check your Moon nakshatra for more context on how your planets are placed.