Deviled Egg Calculator

Deviled egg counts plus mayo and mustard for any party.

Food and CookingUpdated 2026-10-141 min read
Deviled Egg Calculator
Eggs to boil
...
Mayo...
Mustard...

What it does

Deviled eggs vanish first at potlucks. Counts planned from halves keep trays full without a bowl of lonely filling.

The tool above halves the math. Twelve guests at 2 halves need 12 eggs with 6 tbsp of mayo and 3 tsp of mustard. The metric match is 90 ml with 15 ml.

Halves set the eggs. Two per guest suits snack tables, while egg led spreads run three to four.

Mayo binds at half a tablespoon per egg. Mustard sharpens at a quarter teaspoon each, with paprika dusting the tops.

Cold rules the tray. Boiled eggs chill fast, fill near serving, and rest on ice past two hours.

How to use

  1. Pick imperial (tbsp, tsp) or metric (ml).
  2. Enter guests.
  3. Enter halves each: 2 suits parties.
  4. Read eggs first.
  5. Read mayo next, then mustard.
  6. Chill boiled eggs fast and fill near serving.

Formula

Eggs = ceil(guests x halves / 2). Mayo tbsp = eggs x 0.5. Mustard tsp = eggs x 0.25.
guests
Headcount eating eggs.
halves
Halves per guest.

Metric runs 15 ml mayo per tbsp and 5 ml mustard per tsp. Each egg makes two halves.

Worked example

Example: 12 guests, 2 halves each

Imperial defaults: 12 guests, 2 halves each. These are also the default values, so the page opens on this answer.

  1. Guests: 12 at 2 halves each.
  2. Halves: 12 x 2 = 24 halves.
  3. Eggs: ceil(24 / 2) = 12 eggs.
  4. Mayo: 12 x 0.5 = 6 tbsp.
  5. Mustard: 12 x 0.25 = 3 tsp.
  6. Tool shows 12 eggs, 6 tbsp mayo, 3 tsp mustard.

Reference table

Egg checkpoints at 2 halves
GuestsEggsMayo
88 eggs4 tbsp
1212 eggs6 tbsp
2020 eggs10 tbsp
3030 eggs15 tbsp

Limits

  • Count math only. Peeling needs older eggs.
  • Cold holding needs ice past 2 hours.
  • Mustard tastes vary widely.
  • Allergies need labeled trays.

Common mistakes

  • Farm fresh eggs that refuse peeling.
  • Filling hours before serving.
  • Warm trays past two hours.
  • One batch for thirty guests.
  • No labels for mustard heat.

Try it yourself

Quick checks. Answers sit tucked under each question.

20 guests, 3 halves each?

Halves are 20 x 3 = 60. Eggs are ceil(60 / 2) = 30 eggs. Mayo is 30 x 0.5 = 15 tbsp.

8 guests, 2 halves metric?

Halves are 8 x 2 = 16. Eggs are 8. Mayo is 4 x 15 = 60 ml. Mustard is 2 x 5 = 10 ml.

Questions

Eggs for 12 guests?

Divide guest halves by 2. Here 12 x 2 / 2 = 12 eggs.

Mayo?

Half tablespoon per egg. Here 12 x 0.5 = 6 tbsp.

Mustard?

Quarter teaspoon per egg. Here 12 x 0.25 = 3 tsp.

Halves per person?

Plan 1 to 2 halves for snacks, 3 to 4 when eggs lead the table.

Fresh eggs peel?

Yes. Older eggs peel cleaner than farm fresh ones.

Food safety included?

No. Cold holding past two hours needs ice.

Sources

How this page was checked. The formula above was matched against the cited sources, and the worked example was run through the tool on this page before publishing. If you spot an error, contact us so we can fix it and note the correction.