Travel guides
3 guides — practical answers with the math shown, each paired with a free calculator.
Travel
Carry-On Weight Limits by Airline: What Each One Actually Publishes
The question assumes a rule that the three largest US airlines do not have. What they publish instead is stranger, and more useful to know.
August 22, 2026 · 12 min read
Travel
How Much Will Gas Cost for My Trip? Road-Trip Fuel Math
Three numbers set the fuel bill: miles driven, the MPG you actually get, and today's price. Most bad estimates get the middle one wrong.
August 18, 2026 · 12 min read
Travel
How to Claim a Trip Back: Mileage or Actual Cost, Per Diem or Receipts
A method-first guide to choosing vehicle, meal, and lodging claims that match the claimant, governing rules, and available evidence.
August 12, 2026 · 11 min read