Project notes
Understand this estimate
Pigment dosage is meaningful only when its percentage basis is clear. A percentage of binder mass differs from a percentage of the final binder-plus-pigment mixture.
How to use the calculator
Select the documented percentage basis
Use the denominator specified by the compatible resin or pigment guidance.
Inputs Loading basis
Weigh the mixed binder and choose loading
Enter resin and hardener together by weight, then use the loading value intended for that specific pigment system.
Inputs Mixed resin and hardener · Pigment loading
Enter a product limit only when documented
The optional comparison is informational and does not establish a universally safe or recommended pigment amount.
Inputs Entered product limit
Formula and variables
Binder basis: pigment mass = binder mass × loading ÷ 100. Final-mixture basis: pigment mass = binder mass × loading ÷ (100 − loading). Any entered product limit is compared on a binder-mass basis.
- BMixed binder mass
- Combined resin and hardener mass.US oz
- pPigment percentage
- Loading fraction on the selected basis.%
- LEntered product limit
- Optional limit converted for comparison on binder basis.% of binder mass
What the result means
Result interpretation
Pigment amount is the calculated colorant mass; equivalents convert ounces to grams. A warning compares only with the limit you entered. It is not a compatibility or safety decision.
Limits and assumptions
A limit from one mica or urethane colorant cannot be transferred to another pigment or resin. Spoon measures are not converted to grams. Metric gram equivalents are shown for reference; the warning compares only with your entered limit and does not recommend a safe loading.
Worked examples
Two-percent loading by binder mass
Assumptions
- The loading guidance defines 2% of mixed binder mass.
- For this example only, hypothetical product instructions allow a maximum loading of 3% of mixed binder mass.
Calculation
- 100 × 0.02 = 2 oz pigment.
- 100 + 2 = 102 oz mixture; 2 × 28.3495 = 56.70 g pigment.
| Pigment amount | 2 US oz |
|---|---|
| Binder plus pigment | 102 US oz |
| Loading by binder weight | 2 % |
| Pigment amount metric equivalent | 56.7 g |
| Binder plus pigment metric equivalent | 2,892 g |
Two percent of the final mixture
Assumptions
- The 2% is defined as a share of final binder-plus-pigment mass.
- No product limit is entered.
Calculation
- Pigment = 100 × 2 ÷ (100 − 2) = 2.0408 oz.
- Final mixture = 100 + 2.0408 = 102.0408 oz.
| Pigment amount | 2.041 US oz |
|---|---|
| Binder plus pigment | 102 US oz |
| Loading by binder weight | 2.041 % |
| Pigment amount metric equivalent | 57.86 g |
| Binder plus pigment metric equivalent | 2,893 g |
Common questions
- Can a pigment limit be reused with another resin?
- No. Limits depend on the exact resin and colorant guidance. The tool only compares with the value you enter.
- Can spoon measures be converted to grams here?
- No. Bulk density varies; this calculator works from mass and does not infer a spoon-to-weight conversion.