Dosa & Idli Batter Calculator

Making too little dosa or idli batter is frustrating when people are still hungry, while making far too much can leave you trying to use the same batter for several days. This calculator gives you a practical batch estimate from the number of dosas or idlis you want to make.

What does this tool do?

• Estimates rice and urad dal for dosa, idli, or a mixed batch.
• Adjusts the batch for smaller or larger pieces.
• Includes a classic batter option plus softer and crisper variations.
• Gives a starting quantity for fenugreek seeds.
• Adds poha when you choose the softer batter option.
• Shows the approximate amount of fermented batter the batch should produce.

How to use the calculator

1. Choose dosa, idli, or a mixed batch.
2. Enter the number of pieces you want to make.
3. Select the size that best matches how you usually serve them.
4. Choose the batter style and calculate your batch.

The result focuses on dry ingredient quantities because water is harder to standardise. Different rice varieties and urad dal absorb different amounts, and a wet grinder can produce a different batter texture from a mixer-grinder. Add water gradually while grinding, aiming for a smooth, flowing dosa batter or a thick, airy idli batter. You can adjust the consistency again after fermentation.

Fermentation also depends heavily on temperature. A warm kitchen may give you active batter in several hours, while a cool kitchen can take much longer. Use the visible rise, bubbles, aroma, and texture of the batter as your guide rather than relying on a fixed clock time.

The calculator is intended for quantity planning rather than replacing a particular family or regional recipe. Ratios for idli and dosa batter vary across South India, and many cooks use parboiled rice, idli rice, raw rice, poha, cooked rice, or other additions. Start with the estimate, then keep the ratio that gives you the result you prefer.

Your selections remain in your browser. The tool does not save or transmit your batch information.

Frequently Asked Questions

What rice-to-urad ratio does the calculator use?

It varies the ratio by what you are making and the batter style you choose. Dosa generally uses a higher proportion of rice than a softer idli-style batter.

Why does the calculator not give an exact water amount?

Rice, dal, grinder type, soaking, and desired consistency all affect water absorption. Adding water gradually gives a more reliable batter than following a fixed amount.

Can I make both dosa and idli from one batch?

Yes. Choose the mixed batch option for a middle-ground ratio that can work for both. You may still thin a portion slightly when making dosa.

Does the calculator include poha?

It includes poha when you choose the softer batter option. The classic and crisper options do not automatically add it.

How long should I ferment the batter?

Fermentation time depends on room temperature, ingredient temperature, and batter activity. Judge the batter by its rise, aeration, smell, and texture rather than using one fixed number of hours.

Can I use this for large batches?

Yes. The calculator accepts up to 200 pieces. For very large events, allow some buffer because ladle size and serving size vary from cook to cook.

Is the result a traditional recipe?

No. It is a practical quantity planner based on common batter proportions. Regional and household recipes can use different ratios and ingredients.

Is my data saved?

No. The calculation runs in your browser and does not store the values you enter.