CPO / FFA Blending Calculator
Combine parcels of different free-fatty-acid (FFA) levels, read the volume-weighted FFA of the blend, check it against your contract spec, and solve how much low-FFA oil to add to hit a target.
Parcels to blend
Blended result
Total volume 800 MT (volume-weighted average FFA)
Against spec✓ Within spec
Blend-down solver
FFA blends linearly by volume (weight). Real cargoes also blend colour, IV, moisture and impurities — check the full certificate of analysis before contracting. Not trading advice.
Need parcels that already meet your FFA and quality spec? Our desk sources to your COA.
Get a real quote →Why FFA blends by weight
Free fatty acid is a bulk property: the acid molecules in each parcel simply add together in the combined tank. So the blend's FFA is the total acid divided by the total oil — a volume-weighted (mass-weighted) average:
FFA_blend = Σ(volume × FFA) ÷ Σ(volume)
FFA is the headline freshness and refining-loss indicator for crude palm oil, which is why contracts cap it (commonly 5% for CPO). Blending a high-FFA parcel down with fresher oil is routine — but the blend can only ever sit between the parcels' FFA values, so no amount of good oil rescues a lot that is far off spec on its own.
Frequently asked questions
How do you calculate the FFA of a blend?
Free fatty acid blends linearly by weight. Multiply each parcel's volume by its FFA, add those up, and divide by the total volume. The result is the volume-weighted average FFA of the combined lot.
How much low-FFA oil do I need to add to meet spec?
Use the blend-down solver: enter your target maximum FFA and the FFA of the oil you'll add. It solves the mass-balance equation for the tonnes required — provided the added oil is below the target FFA.
Does blending fix other quality problems?
No. FFA blends predictably, but colour, iodine value, moisture, impurities and oxidation do not always average cleanly, and some are limited by the worst parcel. Always confirm the blended lot against a fresh certificate of analysis.