Financial Calculators
Payments, interest and savings. Free, browser-based calculators with the method explained.
30 calculators · Free to use · No sign-up
Financial
- Loan Calculator
Estimate a fixed-rate monthly payment and explore the complete principal-and-interest schedule.
- Mortgage Calculator
Estimate monthly principal and interest, plus the ownership costs you enter.
- Compound Interest Calculator
Explore growth from a starting balance with a fixed rate and a chosen compounding frequency.
- Simple Interest Calculator
Calculate interest charged on the original principal without compounding.
- Savings Goal Calculator
Find the monthly deposit needed to reach a target balance within a chosen time.
- ROI Calculator
Calculate profit or loss as a percentage of the total cost you entered.
- Auto Loan Calculator
Estimate vehicle payments including cash down, trade-in equity, taxes and financed fees.
- Loan Payoff Calculator
Find payoff time and interest savings when you add a fixed extra monthly payment.
- Investment Calculator
Project a balance from an initial amount and regular monthly contributions.
- Inflation Estimate Calculator
Explore future costs and purchasing power at a constant inflation rate you choose.
- Discount Calculator
Apply two successive discounts and an optional tax to a purchase price.
- Sales Tax Calculator
Add a tax rate to a price or extract tax from an inclusive total.
- Margin Calculator
Compare gross profit, margin and markup without confusing their denominators.
- Salary Calculator
Convert an hourly rate or annual salary into gross-pay equivalents.
- Break-even Sales Calculator
Find the whole-unit sales volume needed to cover fixed and variable costs.
- Cash Runway Calculator
Estimate how long available cash lasts at a constant net monthly outflow.
- Customer Acquisition Cost Calculator
Combine acquisition costs and newly acquired customers for a consistent period.
- Subscription Lifetime Value Calculator
Estimate subscription gross-profit value using a simple monthly churn model.
- ROAS Calculator
Measure attributed revenue returned for each dollar of advertising spend.
- Campaign Profit Calculator
Go beyond revenue ROAS by subtracting refunds and included campaign costs.
- E-commerce Order Profit Calculator
Account for shipping, processor fees, acquisition and expected return costs per order.
- Inventory Reorder Point Calculator
Set a replenishment trigger using demand, lead time and an entered safety-stock buffer.
- Inventory Turnover Calculator
Relate cost of goods sold to average inventory and days held during a reporting period.
- Cash Conversion Cycle Calculator
Combine inventory, receivable and payable days into an operating cash-cycle estimate.
- Invoice Fee Gross-up Calculator
Find a gross amount needed to receive a target net amount after percentage and fixed fees.
- Project Quote Calculator
Build a quote from internal labor cost, materials, expenses, contingency and markup.
- Freelance Billable Rate Calculator
Translate an annual income target and overhead into a billable-hour revenue requirement.
- Monthly vs Annual Subscription Calculator
Compare plan spending over a horizon with full annual renewals and no proration.
- Cash vs Installments Calculator
Compare a cash price with discounted monthly payments using an entered opportunity-cost rate.
- Economic Order Quantity Calculator
Balance replenishment order costs against inventory holding costs in the classical EOQ model.
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