Recipe scaling
Resize ingredient quantities by servings or a multiplier while retaining their entered units.
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.
Your result
Complete the inputs to see your result.
How it works
- Scale factor = Target servings ÷ Original servings; Scaled mass = Quantity × Scale factor
- Worked example: 6 ÷ 4 = 1.5; 300 g × 1.5 = 450 g; 2 × 1.5 = 3
- Supported input limits: Original servings: 1e-12 ≤ x ≤ 1000000000000; Target servings: 0 ≤ x ≤ 1000000000000; Scale factor: 0 ≤ x ≤ 1000000000000; Entries: 1–50
Assumptions and limitations
Masses use grams. Recipe units are preserved without conversion; practical fractions are approximate eighths. These calculations do not determine cooking time, temperature, fermentation or food safety.
Sources
- OpenStax — fraction arithmetic Sources reviewed: 2026-10-06
