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Calculator Tools
Basic, scientific, financial, business, and specialized calculators. Percentage, BMI, loan, age, date difference, and more — all free online.
19 Free Tools
All Calculator Tools
Select a tool to get started
Basic Calculator
Simple calculator for addition, subtraction, multiplication, and division.
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Scientific Calculator
Advanced calculator with trigonometry, logarithms, and exponentials.
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Loan Calculator
Calculate monthly payments, interest, and amortization schedules.
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Interest Calculator
Calculate simple and compound interest on investments and savings.
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Mortgage Calculator
Calculate monthly mortgage payments and total costs.
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ROI Calculator
Calculate return on investment and investment performance.
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Profit Margin Calculator
Calculate profit margin, markup, and pricing.
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Tax Calculator
Calculate VAT, sales tax, and income tax.
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Discount Calculator
Calculate discount amounts and final prices.
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Salary Calculator
Calculate net salary, deductions, and take-home pay.
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Currency Converter
Convert between currencies with live exchange rates.
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BMI Calculator
Calculate Body Mass Index and health category.
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Age Calculator
Calculate exact age in years, months, days, and more.
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Date Difference Calculator
Calculate the number of days between two dates.
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Pregnancy Calculator
Calculate due date and pregnancy week.
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GPA Calculator
Calculate Grade Point Average and cumulative GPA.
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Date Difference Calculator
Calculate days between dates
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GPA Calculator
Calculate your GPA
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Salary Calculator
Calculate net salary after taxes
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About Calculator Tools
Basic, scientific, financial, business, and specialized calculators. Percentage, BMI, loan, age, date difference, and more — all free online.
Available Tools in This Category
- Basic Calculator — Simple calculator for addition, subtraction, multiplication, and division.
- Scientific Calculator — Advanced calculator with trigonometry, logarithms, and exponentials.
- Loan Calculator — Calculate monthly payments, interest, and amortization schedules.
- Interest Calculator — Calculate simple and compound interest on investments and savings.
- Mortgage Calculator — Calculate monthly mortgage payments and total costs.
- ROI Calculator — Calculate return on investment and investment performance.
- Profit Margin Calculator — Calculate profit margin, markup, and pricing.
- Tax Calculator — Calculate VAT, sales tax, and income tax.
- Discount Calculator — Calculate discount amounts and final prices.
- Salary Calculator — Calculate net salary, deductions, and take-home pay.
- Currency Converter — Convert between currencies with live exchange rates.
- BMI Calculator — Calculate Body Mass Index and health category.
- Age Calculator — Calculate exact age in years, months, days, and more.
- Date Difference Calculator — Calculate the number of days between two dates.
- Pregnancy Calculator — Calculate due date and pregnancy week.
- GPA Calculator — Calculate Grade Point Average and cumulative GPA.
- Date Difference Calculator — Calculate days between dates
- GPA Calculator — Calculate your GPA
- Salary Calculator — Calculate net salary after taxes
Why Use XIIIXII Calculator Tools?
All our calculator tools are completely free to use, with no registration required. They run directly in your browser, meaning your files and data stay private on your device. Whether you're a professional, student, or casual user, our tools are designed to be fast, intuitive, and reliable.
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