Math & Conversion

Online calculators and unit converters for everyday math. Calculate percentages, loans, dates, BMI, and convert units instantly.

Tools in Math & Conversion

• Unit Converter — Convert between units of length, weight, temperature, and more
• Percentage Calculator — Calculate percentages, increases, and decreases
• Scientific Calculator — Full-featured scientific calculator
• Number Base Converter — Convert between binary, decimal, hex, and octal
• BMI Calculator — Calculate your Body Mass Index
• Age Calculator — Calculate exact age from date of birth
• Date Difference Calculator — Calculate the difference between two dates
• Loan / Mortgage Calculator — Calculate monthly payments and total interest
• Tip Calculator — Calculate tip amounts and split bills
• Aspect Ratio Calculator — Calculate and convert aspect ratios
• Speed / Distance / Time — Calculate speed, distance, or time
• Compound Interest Calculator — Calculate compound interest growth over time
• Discount Calculator — Calculate sale prices and discount percentages
• GPA Calculator — Calculate your Grade Point Average
• Salary Calculator — Convert between annual, monthly, and hourly rates
• Loan Amortization Schedule — Generate a full payment-by-payment amortization table with CSV export