✈️ Aviation

Weight & Balance Calculator

Calculate total weight, total moment and center of gravity from three loading items.

Free toolAviation unitsInstant calculation

Calculator

Enter item 1 weight (kg).
Enter item 1 arm (m).
Enter item 2 weight (kg).
Enter item 2 arm (m).
Enter item 3 weight (kg).
Enter item 3 arm (m).

Result

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m arm
Equivalent
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Additional result
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Formula: CG = total moment ÷ total weight

About this calculator

The datum/reference and sign convention must match the aircraft's weight-and-balance documentation.

How to use this calculator

What to enter

Enter or select the following as requested: Item 1 weight (kg); Item 1 arm (m); Item 2 weight (kg); Item 2 arm (m); Item 3 weight (kg); Item 3 arm (m). Follow the units, valid ranges, examples, and options displayed beside each field.

What the result means

The aviation result is an estimate based on the aircraft, route, weight, speed, wind, fuel, or performance values entered. Check units, aircraft-specific performance data, atmospheric assumptions, and whether reserve, taxi, climb, descent, and regulatory factors are included.

When to use it

Use this for educational or preliminary flight planning only. Never substitute a general calculator for the aircraft flight manual, approved performance charts, current weather, official procedures, or a pilot’s operational judgment.