Financial Calculators Made Simple

Free, accurate financial tools for compound interest, mortgage payments, and retirement planning. Built for users in the US, Canada, UK, and Australia.

📊

Compound Interest Calculator

See how your savings grow over time with the power of compound interest. Adjust rate, frequency, and time period.

Calculate Now → 🏡

Mortgage Estimator

Estimate your monthly mortgage payment, total interest, and amortization schedule for any home price.

Calculate Now → 🌅

Retirement Savings Calculator

Project your retirement balance based on current savings, monthly contributions, and expected returns.

Calculate Now →

📊 Quick Compound Interest

Initial Deposit ($)

Annual Rate (%)

Years

Compound Frequency

Future value: $0.00 · interest earned: $0.00

⚠️ This is an estimate for educational purposes. Actual returns vary. Full calculator →

🏡 Quick Mortgage Estimate

Home Price ($)

Down Payment (%)

Loan Term (years)

Interest Rate (%)

Monthly payment: $0.00 · total interest: $0.00

⚠️ Does not include taxes or insurance. Full calculator →

Why oldiris?

oldiris provides free, accurate financial calculators designed for everyday users and professionals alike. Whether you're planning for retirement, shopping for a mortgage, or exploring compound interest, our tools give you instant, clear results — no sign-ups, no paywalls.

Multi-region support: Defaults and explanations tailored for US, Canada, UK, and Australia.
Educational content: Every calculator includes detailed explanations of how the math works.
Privacy-first: All calculations happen in your browser. We never store or share your financial data.
Dark mode: Easy on the eyes, day or night.