Goal Amount vs Time Required
Larger goals usually take longer when the contribution amount stays the same. That is one reason a timeline estimate can be more practical than looking only at a future value projection. It shows the real cost of choosing a bigger target without changing the monthly or annual investing plan.
If you want to compare the amount side of the decision, review the Investment Goal Calculator, Present Value Calculator, Lump Sum Investment Calculator, and Compound Interest Calculator. Those tools help explain the amount required, while this page explains the time required.