Live
Percentage Calculator
Find a percentage of a number, what percent one number is of another, or the whole from a part.
Partial Products Calculator
Multiply two numbers with the partial products method, breaking each into place values.
Did we solve your problem today?
How to use this calculator
Enter your values. The result updates as you type; press Calculate to confirm and jump to the result on mobile. Use Share to send the calculator with your result.
The partial products method
Split each number by place value, multiply every part of one number by every part of the other, then add. 47 × 36 = (40 + 7) × (30 + 6):
40 × 30 = 1,200
40 × 6 = 240
7 × 30 = 210
7 × 6 = 42
= 1,692
It shows why the standard algorithm works and is common in US elementary math.
Frequently asked questions
Is partial products the same as the box method?
Yes, the area or box model arranges the same partial products in a grid.
About this tool
- Written by
- [Author: to be assigned]
- Reviewed by
- Formula tests passed · human review pending
- Last updated
- 31 Oct 2026
See our methodology and editorial policy. Think something’s off? Report an error with this tool.
Related tools
All Math & StatisticsLive
Factor Calculator
List every factor of a whole number, its factor pairs and its prime factorization.
Live
Volume Calculator
Calculate the volume of a cube, box, cylinder, sphere, cone or pyramid in any unit, with liters and gallons.
Live
Scientific Notation Calculator
Convert numbers to and from scientific notation, E-notation and engineering notation.
Live
GCF Calculator
Find the greatest common factor (GCF) of two or more whole numbers, with the Euclidean steps and the LCM.
Live
Exponent Calculator
Raise any number to a power, including negative and fractional exponents.