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The **Purchasing Calculator** computes and compares the price in multiple currencies for two or three commodities measured by weight (mass), volume, area and length.

**Price for Length:**Enter a length and cost per unit length to see a total cost (e.g., 650 yards at $7.48 per foot is $14,586) .**Price per Area:**Enter an area and cost per unit area to see total cost (e.g., 470 square feet at $3.23/ft^{2}to see a total cost.**Price per Volume**Enter a length and cost per unit length to see a total cost.**Price Compare Two Items by Length :**Enter the length or distance and price of two items, and the calculator tells you which is the better buy and by how much.**Price compare Three items by Length:**Enter the length or distance of tree items, and the calculator tells you which is the best buy and by how much.**Price compare Two Items by Area:**Enter the area and price of two items, and the calculator tells you which is the better buy and by how much.**Price compare Three items by Area :**Enter the area of tree items, and the calculator tells you which is the best buy and by how much.**Price Compare Two Items by Volume:**Enter the Volume and price of two items, and the calculator tells you which is the better buy and by how much.**Price Compare Three items by Volume:**Enter the Volume and price of three items, and the calculator tells you which is the better buy and by how much.**Price Compare Two Items by Weight or Mass:**Enter the weight (mass) and price of two items, and the calculator tells you which is the better buy and by how much.**Price Compare Three Items by Weight or Mass:**Enter the weight (mass) and price of three items, and the calculator tells you which is the better buy and by how much.**Money per Length Conversion**: e.g., enter dollars per foot and see Euros per meter among many other possibilities.**Money per Area Conversion:**e.g., enter dollars per square inch and see Euros per square centimeter among many other possibilities.**Money per Volume Conversion:**e.g., enter dollars per gallon and see Euros per liter among many other possibilities.**Money per Mass or Weight Conversion:**e.g., enter dollars per pound and see Euros per kilogram among many other possibilities.

This calculator helps answer questions like the following:

- Which is cheaper? 3.4 pounds for $4.78 (U.S. Dollars), 1.6 kilograms for £5.20 (GBP Pounds Sterling), 420 grams for €2.10 (Euros) or 1.7 kilograms ¥29.32 (Chinese Yuan)?

This calculator makes these and many more calculations trivial by letting you choose your units (length, area, volume, weight and even currency), enter your numbers and get a reliable answer. **NOTE:**All currencies whether input costs or output prices have a default of U.S. dollars (USD). However, the user can automatically convert this via the pull-down menu.