Forward Rates

This is an implied (or theoretical) interest rate in the future.

This is a breakeven reinvestment rate

We can use the yields of zero coupon bonds to calculate this

Forward Rate - Less Than 12 Months

The forward rate can be calculated using this formula:

Forward Rate - More Than 12 Months

The forward rate can be calculated using this formula:

Forward Curve

A forward curve is not a curve of forward rates.
A forward curve is a zero coupon curve used to calculate a cash flow in the future.