Formula
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- All costs and portion sizes are supplied. Labor, tax and equipment are excluded.
Example Calculation
- Guests: 20
- Tacos per guest: 3
- Filling per taco: 50 g
- Filling cost: 10 currency/kg
- Shell and topping cost per taco: 0.5 currency
- Extra portions: 10 %
20 guests ×3 tacos with 10% extra gives 66 tacos; listed costs total 66 and need 3.3 kg filling.
Frequently asked questions
How do I use this calculator?
Enter guests, tacos per guest, filling per taco, filling cost, shell and topping cost per taco, extra portions. The result updates automatically. Use Reset to restore the example values.
What method does it use?
tacos=ceil(guests × tacos each × (1+extra)); cost=tacos × (filling grams/1000 × unit price+other cost).. All costs and portion sizes are supplied. Labor, tax and equipment are excluded.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.