Shadbala Calculator
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Shadbala, in Vedic astrology, refers to the Six Sources of Strength and Weakness of the Planets in a Birth Chart and is used to evaluate the strength or potency provided by them to the native. The six types of strength are Sthanabala (Positional strength), Digbala (Directional strength), Kalabala (Temporal strength), Chesta Bala (Motional strength), Naisargika Bala (Natural strength), and Drik Bala (Aspectual strength). Each planet receives a specific share of strength based on its position in the chart, and these strengths are quantified using units called Rupas. The assessment of Shadbala helps one to understand the relative influence and impact of planets, providing insights into the overall dynamics of an individual's horoscope and influencing predictions related to various life events.
Excluding Rahu and Ketu, the Shadbala or the Six Sources of Strength are calculated for the seven planets from the Sun to Saturn.
The following are the brief descriptions about what these Balas (Strengths) are:
1. Sthanabala.— In Vedic astrology, Sthanabala refers to a planet's "Positional Strength" derived from its placement in specific houses in the horoscope. Planets gain Sthanabala when positioned in their exaltation, own house, moolatrikona, or friendly house, as well as in their own Shadvargas (Divisional charts).
2. Digbala.— Digbala signifies the "Directional Strength" of planets. For instance, Jupiter and Mercury are potent in the East (Ascendant), while the Sun and Mars derive strength in the North (10th house). Saturn gains Digbala in the West (7th house), and Venus and the Moon acquire strength in the South (4th house).
3- Chestabala (Motional strength).— Chestabala, or Motional Strength in Vedic astrology, is influenced by planetary movements. The Sun and Moon in Capricorn, Aquarius, Pisces, Aries, Taurus, and Gemini during Uttarayana (Sun's northward course), and Mars, Mercury, Jupiter, Venus, and Saturn in retrogression or with a Full Moon, gain Chestabala. However, if Jupiter, Venus, Mercury, and Saturn are in conjunction with Mars, they are considered defeated in planetary combat (Grahayuddha) and acquire Chestabala.
4. Kalabala.— Kalabala in Vedic astrology denotes temporal strength based on temporal factors. The Moon, Mars, and Saturn exhibit strength at night, while the Sun, Jupiter, and Venus are potent during the day. Mercury maintains constant strength. Malefics are influential in the dark half of the lunar month (Krishna Paksha) and the benefics during the bright half (Shukla Paksha). Each planet, including Mercury, the Sun, Saturn, the Moon, Venus, and Mars, gains power at specific times: sunrise, noon, evening, the first part of the night, midnight, and the last part of the night, respectively. Jupiter is considered inherently strong, and planets in their associated weekdays, months, and years are deemed powerful.
5. Drikbala.— Drik Bala, or "Aspectual strength", is determined by the aspects planets receive from others. Benefic aspects enhance the Drikbala, providing strength, while malefic aspects diminish it, weakening the planet's influence in the birth chart.
6. Naisargikabala.— Naisargika Bala signifies permanent or natural strength inherent in each planet regardless of its position. The Sun, Moon, Venus, Jupiter, Mercury, Mars, and Saturn possess strength in a specific order. The Sun is considered the most powerful, while Saturn is regarded as the least powerful in terms of Naisargika Bala.