Finance / Percentage Calculators
Calculate percentages, discounts, tips, and financial ratios.
Featured tools
The high-traffic ones in this category.
Mortgage Calculator with Amortization
Calculate PITI payments, amortization schedules, extra payments, and home affordability.
Percentage Calculator
Calculate percentages, increases, and decreases.
Tip Calculator
Calculate tips and split bills between people.
Discount Calculator
Calculate sale prices after percentage discounts.
Profit Margin Calculator
Calculate profit margin from cost and selling price.
Markup Calculator
Calculate markup percentage and selling price from cost.
Guides
Longer reads that link back to the tools.
Resources
Concept explainers that link back to the tools.
What Is Compound Interest?
Compound interest earns returns on both your principal and previously accumulated interest, accelerating growth over time.
Simple vs Compound Interest Explained
Simple interest applies only to principal; compound interest reinvests earned interest so balances grow faster over time.
How Loan Amortization Works
Amortization splits each loan payment between interest and principal so the loan is fully repaid by the end of the term.
APR vs Interest Rate Explained
The interest rate is the cost of borrowing on the balance; APR includes rate plus certain fees expressed as an annualized percentage.
How to Calculate Percentage Change
Percentage change measures relative increase or decrease from an original value to a new value.
About finance / percentage calculators
Free finance and percentage calculators for discounts, margins, markups, tips, loan payments, compound interest, and break-even analysis. Get instant estimates for everyday and business math.
- Calculate sale prices after discounts
- Set product pricing with margin targets
- Split restaurant bills and tips
- Project savings growth with compound interest
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