Calculators
Accurate, verified calculators for percentages, tips, age calculation, date ranges, and loan estimates.
- Percentage CalculatorCalculate percentage increases, decreases, fractions, and differences.
- Discount & Sales Tax CalculatorCalculate final checkout prices, discounts, coupon stacks, and sales tax.
- Date Difference & Duration CalculatorCalculate exact duration, calendar days, business days, and hours between dates.
- Loan & Mortgage CalculatorCalculate monthly payments, total interest, and annual amortization schedule.
- Compound Interest CalculatorCalculate investment growth with monthly contributions and annual returns.
- Tip & Bill Split CalculatorCalculate restaurant tips and even bill splits per person.
- Age & Milestone CalculatorCalculate exact age in years, months, days, and next birthday countdown.
- BMI & Ideal Weight CalculatorCalculate Body Mass Index and healthy weight ranges (Metric & Imperial).
About Calculators on Swizztool
Accurate calculators: percentage, discount, date difference, loan and mortgage, compound interest, tip splitter, age, and BMI. Instant calculations in your browser. Open any tool and work in the browser. Files and text stay on this device.