Investing
Compound interest
Explore how an initial balance and regular contributions could grow over time.
Starting balance · Contributions · Assumed return
Open calculatorA clearer view of your money
Small calculations.
Bigger perspective.
Explore growth, plan savings, compare borrowing costs, or work through everyday money questions. Choose the tool that fits your question.
The toolkit
Start with a question.
Twelve practical tools. More on the way.
Borrowing
Loan payments
Compare scheduled, extra, and custom payments to understand borrowing costs and payoff time.
Loan amount · Interest rate · Payment options
Open calculatorSaving
Savings goals
Work backward from a target to estimate how much you need to set aside each month.
Target amount · Current savings · Timeline
Open calculatorEveryday math
Percentages
Calculate percentages, compare changes, and work out discounts or markups.
Percentages · Changes · Discounts · Markups
Open calculatorDebt planning
Debt payoff
Compare avalanche and snowball strategies across multiple debts and a shared monthly budget.
Balances · Minimum payments · Extra budget
Open calculatorHome financing
Mortgage calculator
Estimate mortgage payments, monthly housing costs, and a detailed amortization schedule.
Home price · Down payment · Interest rate · Housing costs
Open calculatorFinancial resilience
Emergency fund
Estimate your emergency savings target, current expense coverage, and time to close the gap.
Essential expenses · Coverage months · Savings · Contributions
Open calculatorFinancial snapshot
Net worth
List your assets and liabilities to calculate a current net worth snapshot.
Asset values · Outstanding debts · Currency
Open calculatorEveryday planning
Monthly budget
Compare monthly income, spending, and planned savings to see your remaining balance or shortfall.
Take-home income · Spending · Savings allocations
Open calculatorPurchasing power
Inflation
Explore future costs and purchasing power with simple inflation scenarios or your own assumed rate.
Starting amount · Years · Assumed price change
Open calculatorBusiness planning
Break-even
Estimate sales needed to cover costs, compare profit scenarios, and reach a target profit.
Fixed costs · Price · Variable costs · Sales volume
Open calculatorBusiness pricing
Pricing & margin
Check margin and markup, or calculate a selling price from unit cost and a target percentage.
Unit cost · Selling price · Margin or markup
Open calculatorThe approach
Useful before complicated.
We're building a collection that makes the math easier to explore—not another screen full of financial noise.
Understand the numbers
Clear results, readable breakdowns, and explanations of what each calculation means.
See the assumptions
Rates, contribution timing, and other important assumptions belong in plain sight.
Keep it practical
Focused tools for everyday decisions, without an overwhelming financial dashboard.