Free tool · Sizing guide
Parsi Kasti Size Calculator
Over years and years of Kasti weaving experience we have made a Kasti Size Formula and easy guide to measure Kasti. We have a simple aim, to educate everyone how to measure Kasti size.
A kasti is the sacred cord Zoroastrians tie around the waist in prayer. Its length is sized in Gaj: one Gaj equals 27 inches. Enter your waist measurement, or the length of a cotton thread wrapped three times around your waist, and the calculator works out your Gaj size and shows every step of the arithmetic.
Method 1 · Quick
Measure Kasti size using the formula
- Measure your waistTake a measure tape & measure waist size in Inches.
- Put the number in the formula( Waist Size × 3 ) + 15, then divide by 27.
- Calculate the GajThe answer is your Kasti size in Gaj.
Gaj = ((Waist Size × 3) + 15) ÷ 27
Note, this formula includes over time shrinkage due to washing.
Example
Waist size 40 inches
- Step 1You measure your waist where you tie the Kasti: 40 Inches.
- Step 2Multiply by 3 for the three wraps: 40 × 3 = 120 Inches.
- Step 3Add 15 Inches for tying the Laars and shrinkage: 120 + 15 = 135 Inches.
- Step 4Divide by 27: 135 ÷ 27 = 5. Yes, 5 Gaj is your Kasti Size.
If the answer falls between two sizes, always take the next higher size.
Method 2 · Most accurate
Measure Kasti size using cotton thread
This is the most easy & accurate way to measure a Kasti.
- Wrap a cotton threadTake a Cotton Thread or Nada. Wrap around your waist 3 times just like wearing a Kasti. Keep it slightly loose according to your comfort.
- Measure itNow, measure the length using a measuring tape in Inches.
- Divide by 27Finally, divide the number by 27 (as 1 Gaj = 27 Inches).
Yes, now you have a correct measurement of your Parsi Kasti. This is the most accurate way to find measurement.

Cotton Thread
Example
Let's take an example for easy understanding
- Step 1You have a Cotton Thread or Nada in your hand. Wrapping 3 times around your waist just like wearing a Kasti, you have a length.
- Step 2Now, measure the length using a measuring tape in Inches.
- Step 3Suppose your length is measured as 132 Inches.
- Step 4Look at the table and take a next higher number. So, the next higher number to 132 is 135 Inches. Yes, 5 Gaj is your Kasti Size.
You can also measure your existing Kasti length in Inches and look at the table accordingly.
Still have a doubt? Avail our Free Consultation Now!
Gaj reference table
Parsi Kasti Size Chart
Standard sizes run in half-Gaj steps, from 3 to 8 Gaj. Your calculated size is highlighted below, so you can see its neighbours if you are between two sizes and deciding whether to size up.
| Size | Kasti length | Fits waist up to | Price |
|---|---|---|---|
| 3 Gaj | 81″ | 22″ | On request |
| 3.5 Gaj | 94.5″ | 26.5″ | On request |
| 4 Gaj | 108″ | 31″ | On request |
| 4.5 Gaj | 121.5″ | 35.5″ | ₹2,475In stock |
| 5 Gaj | 135″ | 40″ | ₹2,750In stock |
| 5.5 Gaj | 148.5″ | 44.5″ | ₹3,025In stock |
| 6 Gaj | 162″ | 49″ | ₹3,300In stock |
| 6.5 Gaj | 175.5″ | 53.5″ | On request |
| 7 Gaj | 189″ | 58″ | On request |
| 7.5 Gaj | 202.5″ | 62.5″ | On request |
| 8 Gaj | 216″ | 67″ | On request |
1 Gaj = 27 inches. All measurements in inches, Laars included. 4.5 to 6 Gaj are in stock (tap a price to order); other sizes are woven on request.

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