Finance calculators

Loans, investing, and the math behind everyday money decisions.

Run the numbers on mortgages, loans, credit cards, investments, and retirement — with transparent formulas and editable assumptions.

Calculators
314
Topics: All Mortgage (23) Loans (11) Investing (65) Retirement (8) Budgeting (27)
314 results
Finance

Rule of 72 Calculator

Estimate how long it takes for an investment to double in value at a fixed annual rate of return, using the classic Rule...

basic
11,717 4.0 1 min
Finance / Budgeting

Cash-Back Rewards Calculator

Estimate the annual cash-back you would earn given a baseline rewards rate, plus a bonus rate that applies to a portion...

basic
23,452 4.2 1 min
Finance / Budgeting

Markup vs Margin Calculator

Compute both markup % (over cost) and margin % (over revenue) from the same cost and selling price — and see how they di...

basic
22,386 4.2 1 min