Privatool's finance tools cover the most common personal and business financial calculations. The Mortgage Calculator helps you estimate monthly repayments and total interest cost for a home loan. The Loan Calculator handles car loans, personal loans, and any fixed-rate instalment debt. The Compound Interest Calculator shows how savings grow over time. The Salary Calculator converts between hourly, weekly, monthly, and annual pay. The Tip Calculator splits restaurant bills evenly. The Invoice Generator creates professional invoices you can download as PDF. All calculators run in your browser — your financial data is never transmitted to a server or stored anywhere.

Why Use Browser-Based Finance Calculators?

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Financial privacy
Income and loan data stays in your browser — no server, no tracking.
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Instant results
Results update in real time as you adjust inputs. No form submission needed.
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No subscription
All calculators are free with no usage limits or premium tiers.
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Accurate formulas
Uses standard financial math (amortisation, compound interest) matching bank calculators.

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Frequently Asked Questions

Are my financial inputs stored or shared?

No. All financial calculators run entirely in your browser. Your income, loan amounts, and other financial inputs are never sent to a server, stored, or shared with any third party.

How accurate are the mortgage and loan calculators?

The calculators use standard financial formulas (e.g. the amortisation formula for mortgage payments) and produce the same results as bank calculators. They are suitable for planning and estimation — always confirm final figures with your lender.

What is the difference between the Loan Calculator and the Mortgage Calculator?

Both use the same amortisation math. The Mortgage Calculator is tailored for home loans and shows a full payment breakdown with principal and interest split per period. The Loan Calculator is more general-purpose and works for personal loans, car loans, or any fixed-rate instalment loan.