💧 Bladder Volume Calculator
Estimate bladder volume from three ultrasound dimension measurements using the standard ellipsoid formula.
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What this calculator estimates
Bladder volume is commonly estimated non-invasively from three ultrasound-measured dimensions of the bladder, which is roughly ellipsoid in shape when full.
The formula used
This calculator uses the standard ellipsoid volume formula widely used for bladder scanning: Volume (mL) = Width × Height × Depth × 0.7, where all three measurements are in centimeters. The 0.7 correction factor accounts for the bladder’s shape compared to a perfect ellipsoid.
This tool is for general educational and reference purposes only. Clinical bladder volume assessment should be performed with proper ultrasound equipment and interpreted by a qualified healthcare professional.
Last reviewed August 2026