Percentage Tools
Free, instant calculators for everyday percentage calculations. No sign-up required.
From calculating tips and discounts to figuring out loan payments and investment returns, our tools cover finance, education, health, and more. Each calculator provides instant results with clear breakdowns.
Tip Calculator
Calculate tips, split bills, and find per-person totals for any group size.
Discount Calculator
Find the sale price after any percentage discount. See how much you save.
Markup Calculator
Calculate selling price from cost and markup. See profit and margin.
Grade Calculator
Convert scores to percentages, letter grades, and GPA on a 4.0 scale.
Sales Tax Calculator
Calculate tax amount and total price from any sales tax, VAT, or GST rate.
Compound Interest Calculator
See how savings grow over time with compound interest. Year-by-year breakdown.
Loan Calculator
Calculate monthly payments, total interest, and amortization for any loan.
Body Fat Calculator
Estimate body fat percentage using the U.S. Navy method with simple measurements.
Margin Calculator
Calculate profit margin percentage from cost and revenue. Margin vs markup comparison.
Pay Raise Calculator
Calculate new salary after a percentage raise. See hourly, weekly, and monthly breakdown.
ROI Calculator
Calculate return on investment percentage, net profit, and annualized ROI.
Down Payment Calculator
Calculate down payment amount, loan balance, and estimated monthly payments.
Income Split Calculator
Split bills fairly by income. See what each person should pay for rent, utilities, and more.
Budget Calculator
Apply the 50/30/20 rule, 70/20/10, 80/20, or custom budget to your income.
Salary Calculator
Estimate take-home pay after federal tax, state tax, Social Security, and Medicare.
Mortgage Calculator
Calculate monthly mortgage payments, interest, taxes, and insurance (PITI).
Inflation Calculator
See how inflation changes purchasing power. Compare value across years.
Tax Bracket Calculator
Estimate federal income tax by bracket. See marginal and effective rates.
Retirement Calculator
Project retirement savings with compounding, contributions, and drawdown.
Car Loan Calculator
Calculate auto loan monthly payments, total interest, and amortization.
GPA Calculator
Calculate weighted and unweighted GPA from your course grades and credits.
Debt Payoff Calculator
Plan payoff with snowball or avalanche methods. See interest saved.
PSLE Calculator
Calculate PSLE Achievement Level (AL) scores and aggregate for all 4 subjects.