# Multiplication Calculator

URL: https://speedycalculator.com/calculators/math/multiplication/
Last updated: 2026-10-30

> The multiplication calculator multiplies up to ten numbers – whole numbers, decimals or negatives – and gives the product.

## Inputs

- How many factors?
- Factor 1
- Factor 2
- Factor 3
- Factor 4
- Factor 5
- Factor 6
- Factor 7
- Factor 8
- Factor 9
- Factor 10

## Results

- Product

## Formula

```
Product = a₁ × a₂ × … × aₙ
```

## Explanation

Multiplication is repeated addition and the basis of areas, volumes, prices and scaling. With many factors, signs and decimals it is easy to slip; the calculator handles them all.

### How to use the Multiplication Calculator

- **How many factors?**
- **Factor 1**
- **Factor 2**
- **Factor 3**
- **Factor 4**
- **Factor 5**
- **Factor 6**
- **Factor 7**
- **Factor 8**
- **Factor 9**
- **Factor 10**

Results update as you type, and everything is calculated in your browser.

### How it works

The factors are multiplied in order. The sign of the product is negative when an odd number of factors is negative.

### Inputs explained

FieldWhat to enterHow many factors?Choose one: 2, 3, 4, 5 …Factor 1A numberFactor 2A numberFactor 3A numberFactor 4A numberFactor 5A numberFactor 6A numberFactor 7A numberFactor 8A numberFactor 9A numberFactor 10A number

### Example values

How the main result changes when **Factor 1** changes and everything else stays at the example values above:

Factor 1Product6.25509.387512.510015.6312518.7515025200

## Worked example

Inputs — How many factors?: 2; Factor 1: 12.5; Factor 2: 8.

Results — **Product = 100**.

## Key terms

- **Factor**: A number being multiplied.
- **Product**: The result of multiplication.

## FAQ

**What are the parts of a multiplication called?**
The numbers are factors (or multiplier and multiplicand); the result is the product.

**Does the order of factors matter?**
No – multiplication is commutative and associative.

**What is a negative times a negative?**
Positive.

**What happens if one factor is zero?**
The product is zero.


## Sources

- [OpenStax – Prealgebra 2e](https://openstax.org/details/books/prealgebra-2e)
- [OpenStax – Contemporary Mathematics](https://openstax.org/details/books/contemporary-mathematics)