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How to use this calculator
Choose the formula (if there is more than one), choose what you want to find, then fill in the other values using the units shown. The calculator rearranges the formula, puts your numbers in, and shows every step.
How it's calculated
Density ρ = m / V. Pressure P = F / A. Pressure in a liquid P = ρgh. Upthrust U = ρgV (Archimedes' principle).
Worked example
Water (1000 kg/m³) at a depth of 5 m, using g = 10 m/s²: P = 1000 × 10 × 5 = 50,000 Pa.
Frequently asked questions
What is a pascal?
One newton per square metre (N/m²).
Why does pressure increase with depth?
There is more liquid above pressing down.
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Last updated October 2026. Results are for learning and guidance; always check important work. Calculations run in your browser and are not stored.