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PROFESSIONAL TOOLS

Paint Mixing Calculator

Enter the exact ratio from your product TDS, choose a Paint or Total target, and see the ingredient amounts. Volume and weight ratios are different; conversions require verified product densities.

Define Your Mix

Start with a ratio from the product TDS, not an assumed manufacturer formula.

Ratio parts before any additional Reducer %

Input Ratio Type Volume Weight

Component Ratios

4:1:1 is not 4:1 + 10%. Enter a separate Reducer percentage only under Advanced options and confirm its TDS basis.

Paint Ratio Value Hardener Ratio Value

Advanced options · Reducer % and density

Same units (mL → mL or g → g): no density needed. Switching between mL and g requires densities from the product TDS.

Paint Density (g/mL) Enter verified TDS density Hardener Density (g/mL) Enter verified TDS density Additional Reducer (%) Percentage based on (confirm from TDS)

Additional Reducer is separate from any third ratio part. When the percent is greater than zero, you must explicitly select its TDS basis. Shared links and presets never confirm that basis for you.

Target Mix Amount

Volume → mL and Weight → g work without densities. Cross-unit targets require TDS densities.

Calculate based on:

Target Value (mL)

View live recipe

Your Mix Recipe

Result volume display mL US fl oz

Display units only. Volume targets remain in mL; weight targets remain in g.

Paint Needed:—

Hardener Needed:—

Total Mix:—

Volume → mL and Weight → g calculate without density inputs. Choosing the opposite target unit requires verified densities from the product TDS.

This calculation is a theoretical estimate. Actual results depend on the material and mixing conditions. Follow the product's Technical Data Sheet and your professional judgment.

PAINTHARDENERREDUCER

HOW TO / PRECISION

How to Use This Paint Mixing Calculator

Choose a mixing ratio and enter your desired final amount. For a 4:1 volume mix totaling 500 mL without reducer, measure 400 mL paint and 100 mL hardener. To work backward from paint already measured, choose Paint Volume or Paint Weight under Calculate based on.

NEED ADVANCED MIXING?

Try Paint Mixing Calculator Pro

Plan batch allowance, cumulative measuring points, optional TDS-based density conversions and browser-saved recipes in our free Pro workspace. The quick calculator stays here for everyday ratios.

Open Calculator Pro

GUIDANCE / KNOW-HOW

Common Paint Mixing Questions

01How do I calculate a 4:1 paint mix?

Use the ratio on your coating's Technical Data Sheet (TDS). For a 4:1 volume mix without reducer, 500 mL of combined components calls for 400 mL paint and 100 mL hardener. Check whether the stated ratio is by volume or weight.

02Is 4:1:1 the same as 4:1 plus 10% reducer?

No. In 4:1:1, reducer is a full third ratio part. With 4:1 plus 10%, the additional reducer depends on the TDS percentage basis: paint, paint plus hardener, or final mix. Confirm that basis before mixing.

03Can I calculate from paint already poured?

Yes. Choose Paint Volume or Paint Weight as the target, then enter the amount already measured. The calculator works out the other components from your ratio and any separately specified reducer percentage.

04Can I convert a volume recipe into grams?

Only with the actual densities of the components needed for the conversion. Enter values for the specific products. Without them, weight results are unavailable rather than filled in with assumed densities.

05Can a weight ratio be used with a volume target?

Yes, if the required component densities are known. Keep the ratio basis exactly as stated on the TDS; selecting a different target unit does not change the manufacturer's ratio.

06What does a paint mixing ratio calculator tell me?

It calculates quantities from a ratio you supply. It does not check paint-system compatibility, mixing order, usable pot life or whether a product formula is approved. Follow the coating manufacturer's instructions.

07Is a shared calculator link a verified mixing recipe?

No. A link carries user-entered settings, not manufacturer approval. Anyone opening it should check the product TDS, particularly the reducer percentage basis, before using the amounts.

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PRECISION IN PRACTICEPROFESSIONAL REFINISH / MIX SHEET

TECHNICAL WORKSHEET / 01

Paint Mixing Recipe

Reference mix record · Check the product Technical Data Sheet (TDS).

CREATED—

01 Mix configuration

Ratio: —
Ratio type: —
Components: —
Target quantity: —
Paint density: —
Hardener density: —
Reducer density: —
Extra reducer: —
Result volume units: —

02 Required quantities

Component	Calculated amount
Paint	—
Hardener	—
Reducer	—
Total theoretical mix	—

Important: Not manufacturer approved. This is a theoretical additive-quantity estimate, not proof of actual mixed-liquid yield, material compatibility, device precision or pot life. No density is assumed. Confirm the exact ratio, extra-Reducer percentage basis, densities and mixing/activation instructions in the product TDS/SDS before use.