Free tool
Convention Budget Calculator
Know what your next con will actually cost. Pick a convention, set your group size, and get a full breakdown of badge, hotel, travel, food, and spending money.
Planning a build for this convention?
Costumary tracks your materials, budget, timeline, and build progress all in one workspace. Start your project now and arrive at the con floor with zero last-minute panic.
Start your buildHow to budget for a convention
Convention costs sneak up on you. The badge is the easy part. It is the hotel split, the parking you forgot to check, the $16 chicken tenders at the convention center, and the artist alley prints you could not walk past that blow your budget. Most first-time con-goers underestimate their total spend by 40 to 60%.
The real cost breakdown
For a typical 3-day convention, lodging is your biggest expense (30 to 40% of total), followed by food (20 to 25%), then badge and shopping split the rest. If you are driving, gas and parking add $40 to $100 depending on distance. If flying, budget $200 to $400 for airfare plus $30 to $60 for airport-to-hotel transport each way.
How groups save money
Hotel rooms are the biggest savings lever. A $150/night room split four ways is $37.50 per person per night. Carpooling cuts gas and parking costs. Group dinners at sit-down restaurants are cheaper per person than everyone buying convention center food individually. The calculator above splits shared costs automatically when you set a group size larger than one.
First convention vs. repeat attendee
Your first convention is more expensive because you are buying things you will reuse: a rolling suitcase for cosplay transport, a repair kit, comfortable walking shoes, a portable charger. By your third convention, your base costs drop because you already own the gear. The variable costs (badge, hotel, food, shopping) stay the same.
Related guides
Deep dives and cost breakdowns for this topic.
Convention Trip Budget: $85 to $2,100+
10 min read
I tracked actual spending at 6 cons. Local day trip: $85. Dragon Con weekend: $1,400. Flying to Anime Expo: $2,100. Here's where every dollar goes.
Convention Vendor Profit: The Real Math
11 min read
You sold $800 at your last con. After the table, hotel, gas, inventory, and card fees? You lost $150. Here's how to calculate your real convention profit.
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What are you building next?
Start with a template, customize the milestones and materials, and build without losing track.
Deadpool
~5wThe Merc with a Mouth in full red and black: a head-to-toe spandex bodysuit with diamond-textured fabric, a face shell mask with white magnetic lenses, dual katanas on a concealed back harness, and a utility belt with pouches and holsters. An intermediate build that rewards patience with fit and details. Covers 7 components, 12 materials with cost estimates, a 12-step build plan across 5 phases, and a 5-week timeline at $120 to $350.


Reze
~7wChainsaw Man's Bomb Devil in two forms: the human school uniform and the full hybrid transformation. The uniform is a tailored dark blazer, pleated gray skirt, and white blouse with red tie. The Bomb Devil form adds a sculpted metal mask and dynamite waist panel. The harness system with chains, ammo pouches, and the amber-red wig with soft waves are the make-or-break details. 8 components, 15 materials, 13-step build plan, ~7 weeks, $100 to $300.


Harley Quinn
~4wThe Suicide Squad Harley Quinn: a customized red and blue satin bomber jacket, distressed "Daddy's Lil Monster" tee, sequined shorts, dip-dyed pigtail wig, smudged dual-tone eyeshadow, and an oversized foam mallet. This is a beginner-intermediate build. The jacket and wig are the two skill checks. Covers 7 components, 12 materials with cost estimates, a 10-step build plan across 5 phases, and a realistic 4-week, $90 to $280 budget.


Makima
~4wChainsaw Man's most unsettling devil hunter, built from off-the-rack business formal and one killer wig. No sewing required. The whole look is a white dress shirt, black tie, slim pants, and a knee-length trench coat the kind of sharp office-wear that reads instantly as Makima on the con floor. The pink-red wig with straight bangs is the make-or-break detail, and the yellow ringed circle lenses seal the unnerving effect. 7 components, 9 materials, about 4 weeks, $80 to $220.


Used by makers from r/cosplay, The RPF, Cosplay.com, r/Gunpla, and r/minipainting
