Skip to content

Ellipsoid Calculator

Result

Calculated result 199.4692925888 Based on the values entered.
↗ Math

Ellipsoid Calculator — free online calculator.

Formula

V = (4/3)πabc; SA ≈ 4π×((a^1.6×b^1.6+a^1.6×c^1.6+b^1.6×c^1.6)/3)^(1/1.6) [Knud Thomsen]
  • Ellipsoid Calculator calculates its result from Piabc, A, B, C. It uses the formula V = (4/3)πabc; SA ≈ 4π×((a^1.6×b^1.6+a^1.6×c^1.6+b^1.6×c^1.6)/3)^(1/1.6) [Knud Thomsen]. Change any input to recalculate the result instantly.
  • The main inputs are Piabc, A, B, C. Enter them in the units and format shown in the calculator.
  • Keep comparable quantities in compatible units whenever the formula combines or compares them.
  • Changing any input above recalculates the result with the same calculation engine used by this page.

Example: Ellipsoid

Inputs
  • Piabc: 2
  • A: 3
  • B: 4
  • C: 5

Using Piabc = 2, A = 3, B = 4, C = 5, the calculated result is 199.4692925888.

Sample result: Calculating…

Frequently asked questions

What does the Ellipsoid calculate?

Ellipsoid Calculator — free online calculator.

Which values should I enter?

Enter Piabc, A, B, C using the units and format shown beside each field.

What formula does this calculator use?

The calculator uses the following relationship: V = (4/3)πabc; SA ≈ 4π×((a^1.6×b^1.6+a^1.6×c^1.6+b^1.6×c^1.6)/3)^(1/1.6) [Knud Thomsen].

Why might my result differ from another source?

Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.

Does the result update automatically?

Yes. Changing an input updates the result using the same calculation engine shown on this page.

Page information

Updated: October 7, 2026