Oxford Biosciences Cosmetic Product Experts Press Esc to close
Oxford Biosciences Cosmetic Product Experts Press Esc to close
Enter the weight of each ingredient and the calculator works out the percentage of each in the formulation (% w/w). Add phases to see phase subtotals, and scale the whole batch to a new size while the percentages stay fixed.
| Phase | Ingredient (INCI) | Weight (g) | % w/w | |
|---|---|---|---|---|
| Total | 0 | 0.00% |
Keep the proportions, change the size. Enter a target total weight and the ingredient weights rescale to match.
The percentage of each ingredient by weight is its weight divided by the total weight of the formulation, multiplied by one hundred. The figures always sum to 100 per cent, which is the quick check that a formula is complete. This is the same breakdown that sits at the front of a Product Information File and underpins the safety assessment.
The calculator runs entirely in your browser. Nothing you type is sent anywhere or stored. When you are ready to take a formulation to market, the percentage breakdown is the starting point for a Cosmetic Product Safety Report.
This tool is provided for convenience and does not constitute regulatory or safety advice.