Deep Fry Oil Calculator

About this calculator

The oil a round pot or fryer needs is simply the volume of a cylinder: pi times the radius squared times the desired oil depth, converted to liters — a calculation that matters because deep frying needs enough oil depth to fully submerge the food and maintain a stable temperature, while too much oil close to the rim risks a dangerous boil-over once food is added and the oil bubbles up.

Home cooks use this calculation before deep frying because guessing the fill level either wastes expensive oil by overfilling a pot far beyond what safe frying requires, or leaves too little oil to properly submerge food and keep the temperature stable as it cooks.

This calculator takes your pot diameter and desired oil depth and returns the oil volume needed, so you can fill your pot to the right, safe level every time instead of eyeballing it.