Radiology calculators
Free calculators for radiologists and residents, grouped by area.
Body CT
Chest CT
Vascular
Thyroid ultrasound
Prostate MRI
Organ volumes
- Prostate Volume & PSA Density CalculatorEllipsoid prostate volume with optional PSA density.
- Ovarian Volume CalculatorOvarian volume from three dimensions, with Pavlik’s published limits and a conditional PCOM volume assessment for eligible inputs.
- Uterus Volume CalculatorUterine volume from three measurements, with optional comparison to Kelsey 2016 age-reference centiles.
- Bladder Volume CalculatorEstimate bladder volume from three imaging dimensions. Add post-void dimensions for PVR.
- Thyroid Volume CalculatorEstimate thyroid volume from three ultrasound dimensions of each lobe. Total volume is the sum of the two lobes.
- Testicular Volume CalculatorEstimate each testis’s ultrasound volume, with an optional comparison against published hypotrophy limits.
- Ellipsoid Organ Volume CalculatorVoluMetricsGeometric volume estimates from three diameters, with organ presets and selectable prostate and testis formulas.