The one-sentence version
Shadbala is the classical way to measure how strong each planet in your chart actually is — scored six different ways and summed up.
The sports-team analogy
Imagine your birth chart as a cricket team. Each planet is a player. Each player has a role — Jupiter is the coach, Venus is the all-rounder, Saturn is the grinder, Mars is the bowler, Mercury is the wicketkeeper, the Moon is the captain.
Before the match, you need to know each player's form. Shadbala is that form check.
A strong Jupiter means your coach is match-ready. A weak Saturn means the grinder is tired. A weak Venus in the 7th house means the all-rounder signed up for the marriage game isn't at his best.
The six strengths
Each planet is scored on six dimensions. The total is its Shadbala.
- Sthana Bala — positional strength. Is the planet in its own sign? Exalted? In a friendly sign? Or in a sign that weakens it?
- Dik Bala — directional strength. Certain planets gain strength in certain houses. Jupiter and Mercury are strong in the 1st, the Moon and Venus in the 4th, Saturn in the 7th, the Sun and Mars in the 10th.
- Kala Bala — temporal strength. Strength from time. Day-planets are stronger by day; night-planets at night. Plus contributions from the year, month, and day of birth.
- Chesta Bala — motional strength. Based on how fast the planet is moving at birth. A retrograde planet gains significant Chesta strength.
- Naisargika Bala — natural strength. Each planet has an innate strength. The Sun is naturally strongest, then Moon, Venus, Jupiter, Mercury, Mars, and Saturn last.
- Drik Bala — aspectual strength. Strength received from aspects of benefics (which add) and malefics (which subtract).
Each of these produces a numeric score in virupas. Sixty virupas = 1 rupa. The total is expressed in rupas.
Reading the Shadbala score
Each planet has a minimum Shadbala threshold it needs to cross to be considered well-strengthened in a classical sense:
- Sun: 6.5 rupas
- Moon: 6.0 rupas
- Mars: 5.0 rupas
- Mercury: 7.0 rupas
- Jupiter: 6.5 rupas
- Venus: 5.5 rupas
- Saturn: 5.0 rupas
Above the threshold → the planet can deliver its promises in your chart reliably. Below → it tries, but delivery is inconsistent.
Why this matters
Because without Shadbala, two planets that look equally well-placed can have very different real-world impact.
Imagine Venus in the 2nd house in your chart — a classical wealth placement. But Venus is at 2° (weak Sthana Bala), moving fast toward combustion (weak Chesta Bala), and aspected by a debilitated Saturn (weak Drik Bala). Another chart with Venus in the same 2nd house might have Venus exalted, retrograde (strong Chesta), and aspected by Jupiter.
The first Venus might give small gains. The second Venus might build lasting wealth. Same placement by sign and house — radically different Shadbala.
What the app does
- Computes all six Shadbala components for every planet.
- Shows the total in rupas and flags which planets cross their minimum threshold.
- Breaks down each component so you can see why a planet is weak (not just that it is).
- Applies Shadbala weighting to interpretations automatically — strong planets are read louder; weak ones are read softer.
Classical source
Shadbala is defined in BPHS ch. 27 and ch. 28, and extensively covered in Phaladeepika ch. 3. The thresholds given above are the standard Parashari values. Specific formulas for each of the six strengths are in the same chapters.