Trip Budget Calculator

How to use the trip budget calculator

Start with the two sliders that scale everything else: how many travelers, and how many nights. The calculator treats the party as a unit for the costs you actually share — flights and lodging are entered as totals, not per person — while the daily spending fields are per person, because food and activities don’t get cheaper when you bring a friend. Get these two numbers right first; every dollar below flexes off them.

Enter flights as the total for everyone — the sum of every ticket, not one fare. Lodging is the nightly rate for the whole party: one hotel room or one rental, whatever you’re actually booking. If you’re splitting two rooms, add them together. This is the single biggest place people undercount, because they price one room and forget they need two.

The three daily fields — food, activities, and local transport — are what one person spends in one day. A useful starting point for a mid-range US trip is roughly $60 food, $40 activities, and $15 getting around, but these swing hard by destination: a beach week is light on transport and heavy on food, a city break flips it. The calculator multiplies them by the number of travelers AND by the number of days — and it counts your travel days, because you still eat on the plane day and the drive-home day. That’s why the day count is nights plus one.

Open Advanced for two things. Miscellaneous is a single trip total for the costs that don’t fit a daily rhythm — visas, checked-bag fees, a travel adapter, trip insurance, tips. The buffer is on by default at +10%: it pads the whole estimate for the prices that always come in higher than planned. Turn it off only when you want the bare arithmetic; leave it on when you’re deciding whether the trip is affordable.

Read the result three ways. The total is what the trip costs the whole party. Per person is what each traveler should budget. Per day is the daily burn rate — the most useful number for deciding where to trim, because shaving $20 a day off activities does more over a long trip than one-time cuts. Adjust the sliders and watch all three move together.

The formula

The budget is a sum of four buckets, with a buffer applied at the end. The only subtlety is the day count — spending days are nights plus one, because the travel days cost money too:

lodging   = lodging per night × nights
per diem  = (food + activities + transport) × travelers × (nights + 1)
subtotal  = flights + lodging + per diem + misc
total     = subtotal × buffer        (1.10 default, 1.00 exact)
per person = total ÷ travelers
per day    = total ÷ (nights + 1)

Worked example with the defaults — 2 travelers, 5 nights: lodging is 150 × 5 = $750. Per diem is (60 + 40 + 15) × 2 travelers × 6 spending days = 115 × 12 = $1,380. Add $600 flights and $100 misc and the subtotal is $2,830. Apply the +10% buffer and the total is $3,113 — about $1,557 per person, or $519 a day.

Notice the buffer turns $2,830 into $3,113: that $283 cushion is what keeps a real trip from blowing the plan. Travel prices skew upward — surge-priced rides, a pricier dinner than expected, the museum you didn’t know cost extra — so the padded number is the honest one to budget against.

Frequently asked questions

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