Baking pan size scaling
Compare pan areas or volumes to find a recipe scaling factor. Drag the graph handles to change inputs and explore the result.
Your inputs
The editable example is illustrative. Enter your own dimensions, operating data, prices, and fees. Results update as you edit.
Calculations run in your browser. Inputs are not saved or sent to analytics.
How it works
- Round pan: A₁ = π × ² / 4; A₂ = π × ² / 4
- Rectangle: A₁ = × ; A₂ = × ; V₁ = A₁ × ; V₂ = A₂ ×
- Round pan Area = πd²/4; Rectangle Area = ×; Equal-depth area ratio = A₂/A₁; Explicit-depth volume ratio = V₂/V₁
- Worked example: 25²/20² = 1.5625; 800 g × 1.5625 = 1,250 g
- Supported input limits: : 1e-12 ≤ x ≤ 1,000,000,000,000; : 1e-12 ≤ x ≤ 1,000,000,000,000; : 1e-12 ≤ x ≤ 1,000,000,000,000; : 1e-12 ≤ x ≤ 1,000,000,000,000; : 1e-12 ≤ x ≤ 1,000,000,000,000; : 1e-12 ≤ x ≤ 1,000,000,000,000; : 1e-12 ≤ x ≤ 1,000,000,000,000; : 1e-12 ≤ x ≤ 1,000,000,000,000; : 0 ≤ x ≤ 1,000,000,000,000
Input and formula key
Your result
Complete the inputs to see your result.
Assumptions and limitations
Use internal pan dimensions in centimetres. Equal-depth mode compares areas; volume mode also compares depths. The batter result scales quantity only. Pan material, rising space, baking temperature and cooking time still need recipe-specific judgment.
Sources
- OpenStax — rectangle areas and dimensional measures Sources reviewed: 2026-10-06
- OpenStax — circle area and circumference Sources reviewed: 2026-10-06
