# Upstream Downstream Calculator

In water or stream the direction along the stream is said as downstream and the direction opposite to the stream flowing is called as upstream. You can calculate speed of boat in upstream and downstream using this simple online upstream downstream calculator. This calculator provides the speed in upstream and downstream based on the input values of the speed of the boat in still water and the speed of the stream flowing entered in the km/hr.

## Calculate Speed of Boat in Upstream and Downstream

In water or stream the direction along the stream is said as downstream and the direction opposite to the stream flowing is called as upstream. You can calculate speed of boat in upstream and downstream using this simple online upstream downstream calculator. This calculator provides the speed in upstream and downstream based on the input values of the speed of the boat in still water and the speed of the stream flowing entered in the km/hr.

Code to add this calci to your website

#### Formula:

Speed in upstream (km/hr) = a + b
Speed in downstream (km/hr) = a - b
**Where,**
a = Speed of a boat in still water (km/hr)
b = Speed of the stream (km/hr)

### Example:

Calculate the speed of boat in upstream and downstream using speed of boat in still water of 50 km/hr and speed of the stream of 30km/hr.

#### Solution:

Speed in upstream = 50 + 30

= 80 km/hr

Speed in downstream = 50 - 30

= 20 km/hr