Online Tools

Handy Economics tools that run entirely in your browser — nothing is uploaded.

Interest & Investment

Compound Interest Calculator

Compute final amount, interest and effective annual rate with yearly, quarterly, monthly or daily compounding.

Loans & Repayment

Loan Repayment Calculator

Compare annuity and equal-principal repayment: monthly payment, total repayment and interest.

Valuation & Discounting

NPV Calculator

Discount future cash flows to compute net present value and a viability hint.

Demand & Elasticity

Price Elasticity of Demand

Compute demand elasticity with the midpoint or point formula and classify its type.