About this calculator

Standard portion sizes: main protein 170 g, starch 150 g, vegetables 120 g, salad 80 g per adult. Children count as 0.5; buffets need +10–15%.

Frequently asked questions

What does the Catering Portion Calculator do?

Food quantities by headcount for buffets and plated service. Standard portion sizes: main protein 170 g, starch 150 g, vegetables 120 g, salad 80 g per adult. Children count as 0.5; buffets need +10–15%.

Is the Catering Portion Calculator free to use?

Yes. Every calculator on Calcurly.com is free, works in your browser without sign-up, and can be embedded on your own website.

How accurate is the Catering Portion Calculator?

Results are calculated in real time using industry-standard formulas. Treat the output as a well-informed estimate — always cross-check with local regulations, product datasheets, or a qualified catering & restaurants professional before committing to a purchase or a job.

What inputs does the Catering Portion Calculator need?

Enter values for: Adults, Children, Service style. Sensible defaults are pre-filled where possible so you can start with a single change.

Can I embed the Catering Portion Calculator on my own website?

Yes — copy the iframe snippet at the bottom of this page, or use the Embed Generator to customise the size. The embedded version stays in sync with the live calculator on Calcurly.com.