Luggage Weight Calculator
Track packed luggage weight against airline limits.
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What This Calculator Does
Check your luggage weight against airline baggage limits. Enter your bag weight and compare it instantly against carry-on and checked bag limits for major US and international airlines.
It combines Suitcase Weight, Contents Weight, Weight Limit to estimate Total Bag Weight, Equivalent Total, Remaining Allowance.
Formula & Method
Notation used in the formulas: = Total Bag Weight; = Suitcase Weight; = Contents Weight; = Weight Limit.
Method summary: inputs are normalized to consistent units, core equations are evaluated, then secondary values are derived and rounded for display.
Use this before packing or at the airport to confirm your bags meet airline weight requirements and avoid overweight baggage fees.
Airline Baggage Weight Limits by Carrier
Weight limits shown are standard economy class limits. Business and first class often allow heavier bags. Always confirm with your airline before travel.
| Airline | Carry-On (max) | Checked Bag (max) | Overweight Fee (approx.) |
|---|---|---|---|
| American Airlines | No weight limit (must fit overhead) | 50 lbs / 23 kg | $100–$200 (51–70 lbs) |
| Delta Air Lines | No weight limit (must fit overhead) | 50 lbs / 23 kg | $100 (51–70 lbs) |
| United Airlines | No weight limit (must fit overhead) | 50 lbs / 23 kg | $100–$200 (51–70 lbs) |
| Southwest Airlines | No weight limit (must fit overhead) | 50 lbs / 23 kg (2 bags free) | $75 (51–100 lbs) |
| Alaska Airlines | No weight limit (must fit overhead) | 50 lbs / 23 kg | $100 (51–70 lbs) |
| British Airways | 51 lbs / 23 kg | 51 lbs / 23 kg | £65+ per kg over limit |
| Air France | 26 lbs / 12 kg | 51 lbs / 23 kg | €50–€200 depending on route |
| Lufthansa | 17.6 lbs / 8 kg | 51 lbs / 23 kg | €20 per kg over limit |
| Emirates | 15.4 lbs / 7 kg | 55 lbs / 25 kg (Economy) | USD $30–$60 per kg over limit |
Limits apply to standard economy class. Business/first class limits are typically higher. Fees and limits change — always verify with your carrier before travel.
Frequently Asked Questions
- What is the standard carry-on weight limit?
- Most major US airlines (American, Delta, United, Southwest, Alaska) do not enforce a carry-on weight limit — they only require it to fit in the overhead bin. However, many international carriers do enforce limits: British Airways allows 23 kg, Air France 12 kg, Lufthansa 8 kg, and Emirates 7 kg for carry-ons.
- How much does a checked bag cost if it is overweight?
- Fees vary by airline and route. US domestic carriers typically charge $100 for bags between 51–70 lbs and $200 for bags 71–100 lbs. International airlines often charge per-kilogram rates over the limit, which can add up quickly on long-haul routes.
- Which airlines allow two free checked bags?
- Southwest Airlines is the most notable US carrier allowing two free checked bags (up to 50 lbs each) for all passengers. Most other US and international airlines charge for checked bags, though elite frequent-flyer status or certain credit cards may waive fees.
Inputs Used
- Suitcase Weight: Used directly in the calculation.
- Contents Weight: Used directly in the calculation.
- Weight Limit: Used directly in the calculation.
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