Endpoint Calculator

Find an endpoint from a start point and the midpoint.

Endpoint (8, 7)

Formula: end = 2 × midpoint − start

Step-by-step with your numbers:

1. Values used:

2. Start x = 2

3. Start y = 3

4. Midpoint x = 5

5. Midpoint y = 5

7. Endpoint = (8, 7)

Did we solve your problem today?

Find the other endpoint of a segment from one end and its midpoint.

The math behind it

Since the midpoint is the average, endpoint = 2 × midpoint − start (per coordinate).

Start (2,3), midpoint (5,5) → endpoint (8,7).

Reverse?

Use the Midpoint calculator to go the other way.