Calculate volume-weighted average price (VWAP) for stocks, products, and procurement. Enter purchase prices and quantities to find your true average cost basis with live charts.
Enter purchase prices and quantities to find your true average cost basis (VWAP).
A weighted price calculates the true average cost when you buy the same item at different prices and quantities. Each purchase price is weighted by the quantity bought, so larger purchases have more impact on your average cost.
If you buy 100 shares at $50 and 900 shares at $55, the simple average is $52.50 — but your true cost basis is $54.50. The weighted price calculator prevents this costly miscalculation.
Type each data point into the 'Value' column. These are the price ($)s you want to weight.
Enter the quantity for each value. The calculator accepts any positive numbers as weights.
The calculator computes your result instantly. See the weighted result, sum of products, sum of weights, and interactive charts update in real time.
The weighted price formula: multiply each value by its weight, sum those products, then divide by the total of all weights.
Enter each value alongside its weight. For example: Buy 1 50 (weight 100), Buy 2 55 (weight 200), Buy 3 48 (weight 150).
50 × 100 = 5000, 55 × 200 = 11000, 48 × 150 = 7200.
5000 + 11000 + 7200 = 23200.
100 + 200 + 150 = 450.
23200 ÷ 450 = 51.56.
When values have unequal importance, simple averaging misleads. This calculator weights correctly.
Always divide by the sum of weights, not the number of values.
Putting values in the weight column produces wrong results. The labeled columns prevent this.
Multiply each value by its weight. Sum products. Sum weights. Divide. The calculator automates this.
Use the weighted price calculator to compute weighted results. Edit values below.
The weighted result accounts for different weights across categories, giving a more accurate composite than a simple average.
Another real-world example. Edit values to see the result update instantly.
The weighted result reflects the true composite value when different sources have different levels of importance or volume.
Track your true average purchase price across multiple stock buys at different price levels for accurate capital gains reporting.
Compare supplier quotes weighted by order volume to determine your blended unit cost from multiple vendors.
See how your periodic investment purchases at varying prices produce a volume-weighted average entry price over time.
Calculate the blended cost when mixing materials purchased at different per-unit rates and varying quantities.
Weights must be positive. The calculator requires positive weights. A weight of zero excludes that value entirely.
Equal weights = simple average. If every value has the same weight, the weighted result equals the simple average.
Result always falls between min and max values. No matter the weight distribution, the result will always be between the smallest and largest values.
Larger weights dominate the result. The larger a weight relative to the total, the more the result is pulled toward that value.
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