Formula
x̄=Σmᵢxᵢ/Σmᵢ; ȳ=Σmᵢyᵢ/Σmᵢ.
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Discrete point masses in two dimensions; not a continuous density integral. Mass units must agree.
Example Calculation
Example inputs
- Rows: mass, x, y: 1, 0, 0; 3, 4, 0
Masses 1 at (0,0) and 3 at (4,0) give center (3,0) and total mass 4.
Frequently asked questions
How do I use this calculator?
Enter rows: mass, x, y. The result updates automatically. Use Reset to restore the example values.
What method does it use?
x̄=Σmᵢxᵢ/Σmᵢ; ȳ=Σmᵢyᵢ/Σmᵢ.. Discrete point masses in two dimensions; not a continuous density integral. Mass units must agree.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.