Economics · Class 12
Investment Multiplier Calculator for Class 12 Economics
Calculate the Keynesian investment multiplier from MPC or MPS and see the complete Class 12 Economics formula and working.
Formula
k = 1 ÷ (1 − MPC) = 1 ÷ MPS
Worked example
If MPC = 0.8, MPS = 0.2 and the investment multiplier is 5.
The interactive calculator on this page accepts your own question values and displays the final answer with step-by-step working.
Frequently asked questions
What formula does the Investment Multiplier Calculator use?
This calculator uses: k = 1 ÷ (1 − MPC) = 1 ÷ MPS. The interactive page shows the working step by step.
Is the Investment Multiplier Calculator free?
Yes. It is free to use and does not require a login.
Can I use the calculator for exam preparation?
Yes. Use it to check numerical working and then practise writing the formula, substitution and final answer yourself.
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