Finance Calculators
Calculate interest, loans, ROI, discounts, tips, and finance scenarios for budgeting, shopping, and planning.
Finance calculators help compare everyday money decisions, from discounts and tips to interest and planning estimates.
Why this category matters
Finance calculators group related formulas so visitors can compare nearby tools instead of landing on a single isolated calculator page.
How to choose a calculator
Pick the task that matches the result you need, then review the formula shown on the calculator page. Related tools are linked when another calculation may fit better.
Accuracy guidance
Enter the original values carefully and round after the result is shown. For health, finance, construction, or schoolwork, verify the formula matches the method your task expects.
What to open next
Open the calculator that matches the result label you need. If the first result is not the right fit, use the category list and related links to move to a nearby formula without starting your search over.
Finance tools
Simple Interest Calculator
Calculate simple interest on a principal amount.
Formula: Interest = P * r * t
Compound Interest Calculator
Calculate compound interest with compounding frequency.
Formula: A = P(1 + r/n)^(nt)
ROI Calculator
Calculate Return on Investment percentage from initial cost and final value.
Formula: ROI = ((Final Value - Initial Cost) / Initial Cost) × 100%
Loan Calculator
Calculate monthly payments for a personal loan.
Formula: Monthly Payment = P * (r * (1+r)^n) / ((1+r)^n - 1)
Mortgage Calculator
Calculate monthly mortgage payments with optional down payment.
Formula: Monthly Payment = (P - D) * (r * (1+r)^n) / ((1+r)^n - 1)
Salary Calculator
Convert between hourly, weekly, monthly, and annual salary.
Formula: Annual = Hourly * 2080; Monthly = Annual / 12