Shadbala Calculator
Shadbala — meaning 'six strengths' in Sanskrit — is the comprehensive planetary strength calculation system in Vedic astrology. It evaluates each planet's power across six distinct dimensions: Sthana Bala (positional strength), Dig Bala (directional strength), Kaala Bala (temporal strength), Cheshta Bala (motional strength), Naisargika Bala (natural strength), and Drig Bala (aspectual strength). The combined score determines how effectively each planet can deliver its promised results. Kaala's Shadbala Calculator computes all six strength components for all nine planets using Swiss Ephemeris positional data. Each component is calculated according to classical Parashari rules, producing individual scores that are summed into a total Shadbala value measured in Rupas (a unit of planetary strength). A planet is considered strong when its total Shadbala exceeds the minimum required threshold for that specific planet. Understanding Shadbala transforms chart interpretation from guesswork to quantitative analysis. Two people may both have Jupiter in the 10th house, but if one Jupiter has a Shadbala of 7 Rupas and the other has 3 Rupas, the career outcomes will be dramatically different. Shadbala provides the objective measurement needed to distinguish between a planet that will deliver strong results and one that will underperform despite a good house placement.
Shadbala Calculator
- Components
- 6 (Sthana, Dig, Kaala, Cheshta, Naisargika, Drig)
- Unit of Measurement
- Rupas (1 Rupa = 60 Virupas)
- Planets Analyzed
- 7 (Sun through Saturn — Rahu/Ketu excluded)
- Source
- Brihat Parashara Hora Shastra
- Primary Use
- Quantifying planetary strength for prediction
- Calculation Engine
- Swiss Ephemeris positional data
- Cost
- 1 credit
The Six Strength Components
Sthana Bala (positional strength) measures strength from the planet's sign placement, including Uchcha Bala (exaltation strength), Saptavargaja Bala (strength in seven divisional charts), Ojhayugma Bala (odd-even sign strength), Kendra Bala (angular house strength), and Drekkana Bala (decanate strength). This is typically the largest component of Shadbala.
Dig Bala (directional strength) assigns strength based on which house the planet occupies — Jupiter and Mercury are strongest in the 1st house (East), Sun and Mars in the 10th (South), Saturn in the 7th (West), and Moon and Venus in the 4th (North). Kaala Bala (temporal strength) evaluates strength from the time of birth — whether day or night, the weekday, the month, the year, and the hour. Cheshta Bala (motional strength) measures whether the planet is direct, retrograde, or stationary. Naisargika Bala (natural strength) is a fixed value based on the planet's inherent luminosity. Drig Bala (aspectual strength) calculates the net benefic or malefic aspects received by the planet.
Minimum Strength Requirements
Each planet has a minimum Shadbala threshold that it must meet to be considered adequately strong. These minimums differ by planet because different planets have different inherent strength distributions. Sun requires a minimum of 390 Virupas (6.5 Rupas). Moon requires 360 Virupas (6.0 Rupas). Mars requires 300 Virupas (5.0 Rupas). Mercury requires 420 Virupas (7.0 Rupas). Jupiter requires 390 Virupas (6.5 Rupas). Venus requires 330 Virupas (5.5 Rupas). Saturn requires 300 Virupas (5.0 Rupas).
Planets exceeding their minimum threshold are strong and can deliver good results during their Dasha periods. Planets falling significantly below the threshold are weak and may produce disappointing or delayed results. Kaala displays each planet's total Shadbala against its required minimum, making it immediately clear which planets are your strongest allies and which may need remedial support.
Interpreting Your Shadbala Results
Kaala presents Shadbala results as a visual dashboard showing each planet's total strength, its individual component scores, and a strength rating (strong, adequate, or weak) based on the minimum threshold comparison. The breakdown of individual components reveals why a planet is strong or weak.
For example, a planet might have excellent Sthana Bala (good sign placement) but poor Dig Bala (wrong house direction) and weak Drig Bala (afflicted by malefic aspects). This tells you that the planet has inherent potential (dignity) but faces obstacles in expressing that potential (directional weakness and affliction). Remedial measures can then target the specific weakness — gemstones and mantras primarily address Naisargika and Cheshta weaknesses, while behavioral adjustments address Dig and Drig challenges.
Shadbala in Prediction and Remedy
Shadbala has direct practical applications. For prediction, a planet with high Shadbala will deliver its Dasha period's results more reliably and powerfully than one with low Shadbala. During Jupiter Mahadasha, a strong-Shadbala Jupiter brings expansive growth, while a weak-Shadbala Jupiter may bring only modest improvement or even challenges in Jupiter's signification areas.
For remedial astrology, Shadbala identifies which planets most need strengthening. If your 10th lord has the lowest Shadbala in your chart, career remedies targeting that planet (through gemstones, mantras, or behavioral alignment with the planet's nature) become a priority. Kaala's AI interpreter Jyothi incorporates Shadbala data when generating interpretations, ensuring that predictions account for each planet's actual ability to deliver results.
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Frequently Asked Questions
Classical Shadbala calculations as described in Brihat Parashara Hora Shastra apply to the seven visible planets (Sun through Saturn). Rahu and Ketu are shadow planets (Chaya Grahas) without physical bodies, and the six strength components (particularly Cheshta Bala and Naisargika Bala) do not apply to them in the traditional framework. Their strength is assessed through other methods like sign placement and aspect analysis.
Yes, though it is uncommon. Shadbala is a composite score — a debilitated planet loses Uchcha Bala (exaltation strength) but can compensate through strong Dig Bala (being in the right house direction), favorable Kaala Bala (born at the right time), and positive Drig Bala (receiving benefic aspects). Debilitation cancellation (Neech Bhanga) can also restore some strength, though this is assessed separately from Shadbala.
Shadbala quantifies whether the planets forming a Yoga have the strength to actually deliver results. A Raj Yoga formed by two planets with high Shadbala will manifest powerfully, while the same yoga formed by weak-Shadbala planets may produce only modest results. Kaala considers Shadbala when assessing Yoga strength in the Raj Yoga and other yoga calculators.