Wedding Cost Estimator

Estimate a wedding’s total cost from guest count, per-guest catering, venue, and the major extra categories, with a per-guest breakdown.

Result

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How to use this calculator

Enter your guest count and the per-guest catering cost.
Enter the venue, photography, attire, flowers/music, and other category amounts.
Read the estimated total and the all-in cost per guest.
Add the suggested contingency and trim the guest list to lower the total.

About this calculator

Weddings are budgeted around one dominant variable — the guest count — because catering, bar, rentals, and even venue size all scale with how many people attend. This estimator multiplies your guest count by a per-guest catering cost, then adds the major fixed categories: venue, photography and video, attire and beauty, flowers, music and decor, and a catch-all for rings, cake, stationery, the officiant, and favors. The result is a total plus an all-in cost per guest, which is a useful figure for deciding whether to trim the list. Because guest count drives so much of the spend, cutting it is the most effective way to reduce a budget. Costs vary enormously by region and season, so treat the total as a planning baseline and add a 5–10% contingency for the inevitable surprises, which this tool suggests.

How it works — the formula

Catering = Guests × Per-guest cost
Total = Catering + Venue + Photo + Attire + Flowers/Music + Other
Per-guest all-in = Total ÷ Guests

Catering scales with headcount; the remaining categories are fixed line items summed into the total.

Source: The Knot — Average Wedding Cost (cost categories)

Worked examples

Example 1

100 guests, $150/head, $5k venue, $3k extras

Inputs:: guests=100, perGuest=150, venue=5000, photo=3000, attire=2500, flowersMusic=4000, other=3000
Output:: catering $15k → total $32,500

Example 2

50 guests, $120/head

Inputs:: guests=50, perGuest=120, venue=4000, photo=2500, attire=2000, flowersMusic=3000, other=2000
Output:: catering $6k → total $19,500

Example 3

200 guests, $180/head

Inputs:: guests=200, perGuest=180, venue=8000
Output:: catering $36k drives a large total

Limitations

Regional and seasonal price variation is large.
Per-guest input covers catering only; other items are fixed inputs.
Does not include taxes, service charges, or vendor gratuities explicitly.

Planning estimate; collect real vendor quotes before committing.

Frequently asked

How much does a wedding cost?+

It varies enormously by region, season, and style, but guest count is the biggest driver. This estimator builds your number from a per-guest catering cost plus the major fixed categories, so you control the assumptions rather than relying on a national average.

Why does guest count matter so much?+

Because catering, beverages, rentals (tables, chairs, linens), and venue capacity all scale with headcount. Each additional guest adds the per-guest cost, so cutting the list is the single most effective way to reduce the total budget.

What is the biggest wedding expense?+

Usually the venue plus catering combined, since catering scales with guests and venues are a large fixed cost. Together they often make up roughly half of a wedding budget; photography, attire, flowers, and music fill out the rest.

Should I budget a contingency?+

Yes. Unexpected costs — overtime, extra rentals, vendor gratuities, weather backups — are common. A contingency of 5–10% of the total (shown here) gives a cushion so a surprise does not derail the plan.

How can I lower the cost?+

Trim the guest list (it cuts catering, bar, and rentals at once), choose an off-peak date or day, pick a venue that includes tables and chairs, and prioritize the two or three categories that matter most to you while economizing on the rest.

What does the per-guest figure include?+

In this tool, the per-guest input covers catering (food and beverage). The "all-in cost per guest" in the results divides the entire budget — including fixed items — by the guest count, which is a handy way to frame the total.