Online Weight and Balance Calculator

Estimate aircraft loading with moments, fuel, baggage, and crew. Review center of gravity against limits. Export clean records for simple trip planning and checks.

Calculator

Example Data Table

Station Weight Arm Moment
Empty aircraft 1500 39.50 59250.00
Pilot and copilot 340 37.00 12580.00
Rear passengers 300 73.00 21900.00
Baggage area one 50 95.00 4750.00
Fuel 300 48.00 14400.00

Formula Used

Moment = Weight × Arm

Total Weight = Sum of all station weights

Total Moment = Sum of all station moments

Center of Gravity = Total Moment ÷ Total Weight

Fuel Weight = Fuel Quantity × Fuel Density

Takeoff Fuel = Usable Fuel − Taxi Fuel

Landing Fuel = Usable Fuel − Taxi Fuel − Trip Fuel

How to Use This Calculator

Enter empty aircraft weight and arm first. Add crew, passenger, baggage, cargo, and fuel data. Use one consistent unit system. Enter approved aircraft limits. Press the calculate button. Review each phase. Download the CSV or PDF record when needed.

Plan Loads With Confidence

A weight and balance sheet protects every trip. It turns scattered loading details into one clear center of gravity result. This calculator helps you review empty aircraft data, crew, passengers, baggage, cargo, and usable fuel. It also separates ramp, takeoff, zero fuel, and landing conditions.

Why Balance Matters

Weight alone does not show the full risk. A light aircraft can still be unsafe when weight sits too far forward or too far aft. Forward balance can increase control force and landing speed. Aft balance can reduce stability. Both problems matter during climb, cruise, and landing.

Use Moments Carefully

Each station has a weight and an arm. The arm is the distance from the reference datum. Multiplying them gives a moment. Total moment divided by total weight gives the center of gravity. The same rule works for pounds, kilograms, inches, or centimeters when units stay consistent.

Fuel Changes The Answer

Fuel often sits at a fixed arm. As fuel burns, weight and moment both change. That is why this tool shows ramp, takeoff, and landing values. Taxi fuel is removed before takeoff. Trip fuel is removed before landing. The landing balance may differ from the takeoff balance.

Limits And Envelope Checks

Entered limits are compared with each phase. Maximum ramp, takeoff, and landing weights are checked. Forward and aft center of gravity limits are checked too. The result shows warnings when values fall outside the entered envelope. Always compare the output with the approved aircraft manual.

Better Record Keeping

The CSV export helps save the load sheet. The PDF option creates a simple record for dispatch notes, training files, or trip folders. Keeping each calculation can help explain decisions later. It also makes repeated routes easier to review.

Common Input Checks

Review one unit system before calculation. Check that arms share the same datum. Confirm that baggage weights include containers. Small entry errors can move the final center of gravity quickly before departure.

Practical Use

Use measured or approved station arms. Avoid guessing baggage locations. Enter the actual fuel density used by your operation. Recalculate when passenger seating, baggage, or fuel changes. Treat this calculator as a planning aid. The approved flight manual remains the final authority.

FAQs

What is weight and balance?

It is a loading check. It confirms total weight and center of gravity. Both values must stay within approved limits for safe operation.

What is an arm?

An arm is the distance from the reference datum to a station. It shows where a weight acts on the aircraft.

What is a moment?

A moment is weight multiplied by arm. It shows the turning effect of each load around the reference datum.

Why is fuel shown in phases?

Fuel weight changes during flight. Ramp, takeoff, and landing values help show how center of gravity moves as fuel burns.

Can I use kilograms and centimeters?

Yes. Use any consistent unit pair. Do not mix pounds with kilogram limits, or inches with centimeter arms.

What does an aft limit warning mean?

It means the calculated center of gravity is behind the entered aft limit. Seating, baggage, or fuel placement may need review.

Does this replace an aircraft manual?

No. It is a planning aid. Always use approved weight, balance, and envelope data from the aircraft documents.

Why download CSV or PDF results?

Downloads help keep trip records. They are useful for training, dispatch review, repeated routes, and later load comparisons.

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Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.