When actual materials costs miss the standard, this splits the total gap into a price problem (paying more or less per unit) and a quantity problem (using more or less material) — two very different root causes.
How it works
The price variance compares actual and standard price, applied to the actual quantity used; the quantity variance compares actual and standard quantity, applied to the standard price — isolating each factor from the other.
What this does not include
This does not include labor variances (rate and efficiency), which follow the identical logic applied to labor costs instead of materials — a parallel calculation this calculator doesn’t cover directly.
How to use this calculator
- Enter actual price, standard price, actual quantity, and standard quantity.
Frequently asked questions
Why compute the price variance at actual quantity, not standard quantity?
It isolates the pure price effect — using actual quantity for both terms in that comparison means only the price difference, not any quantity difference, drives the price variance result.
Who’s typically responsible for each variance?
Price variances are often traced to purchasing decisions (which supplier, what negotiated rate), while quantity variances are more often traced to production efficiency or material waste on the shop floor.
Is a favorable price variance always actually good news?
Not necessarily — a favorable price variance from buying cheaper, lower-quality materials could cause an unfavorable quantity variance later from more waste or rework, so the two are often examined together.
