Financial Calculators

KeenPurse tools

Financial Calculators

Practical calculators for savings, debt, budgeting, and beginner investing. Adjust the assumptions, understand the trade-offs, and export a clear record of your estimate.

These tools are educational. They use the assumptions you enter and do not account for every tax rule, product fee, rate change, or personal circumstance.

Glass savings jar with growing coins, a calendar, and an upward chart

Investing

Compound Interest Calculator

Estimate how a starting balance, recurring contribution, return assumption, and time horizon work together.

Open calculator

Savings pot, target, calendar, and rising coins for a savings goal

Saving

Savings Goal Calculator

Estimate how long a defined savings goal may take with your current balance and monthly contribution.

Open calculator

Safe, umbrella, coins, and first aid kit representing emergency savings

Emergency planning

Emergency Fund Calculator

Turn essential monthly spending and a coverage period into a practical target and gap.

Open calculator

Credit card, decreasing arrow, coins, and a checkmark for debt repayment

Debt

Debt Payoff Calculator

Estimate a payoff timeline and interest cost from a balance, APR, and fixed payment.

Open calculator

Budget envelopes, calculator, pie chart, and piggy bank representing a 50 30 20 budget

Budgeting

50/30/20 Budget Calculator

Use a simple starting allocation for needs, wants, and savings or debt goals.

Open calculator

What makes these tools different?

Each calculator makes its assumptions visible and gives you an exportable result. A calculation is not a recommendation: products, tax treatment, deposit protection, debt terms, and investment returns vary by country and provider. Check official sources and your own agreements before acting.

For more context, visit our beginner investing guide, emergency-fund guide, and zero-based budgeting guide.