Formulation Ratio Calculator (Weight/Volume + Tolerance)

Create a formulation table, auto-scale to a target total, and check min/max tolerance per ingredient.

Weight/volume ratios, density conversion, rounding, CSV/PDF—built for real production friction points.

Weight/Volume Density conversion Min/Max check CSV/PDF

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Ingredients without density cannot be converted between weight and volume.

1) Settings

Calculation basis

Unit

Target total

Ratio input

When totals don't match

Choose how to handle % totals that are not 100. Normalize keeps relative ratios and scales them to 100%.

Tolerance basis

Min/max can be blank. Only filled entries are checked.

Rounding

If rounding changes the total, use adjustment to keep the target total.

2) Formulation Table (Input)

Paste / Bulk input

Ingredient	Input	Density (g/mL)	min	max	Output	Status

Ingredients without density cannot be converted between weight and volume.

3) Results

Summary

Scale factor -

Output total -

Converted total -

Warnings

No warnings.

Breakdown (Before → After rounding)

Ingredient	Before	After	Ratio %

FAQ

The total is not 100%.

Use the setting for handling mismatched totals. You can normalize to 100% or block calculation until fixed. If normalized, both input and normalized % are shown.

Densities differ.

Enter density (g/mL) per ingredient to convert weight ↔ volume. Rows without density show N/A for conversion.

I need to round to lot sizes.

Set a minimum dose step (e.g., 0.1 g) and rounding method. If totals drift, use delta adjustment to keep the target total.

Notes (Disclaimer & Safety)

This tool is a calculation aid and does not replace design, regulations, contracts, or safety requirements.
Preset values are examples only and may vary by conditions.
This tool is for formulation calculation and record keeping only. It does not provide guidance on manufacturing procedures, hazardous mixing, reactivity, compatibility, safety, or regulatory compliance.
Verify input values (ratio, density, tolerance) on your side.
Results are for reference; follow your internal standards, procedures, and safety management.

English hints: formulation calculator / mixture ratio calculator / blending recipe tool