Calculators
Compare a loan payment, check an invoice’s VAT, or plan across dates and time zones. Choose a calculator by the decision you need to make.
Finance & Everyday Math
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Discount Calculator
Calculate discounted prices, savings, and stacked discounts.
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Loan Calculator
Calculate monthly payments, total interest, and amortization schedules.
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Mortgage Calculator
Monthly payment with tax, insurance, PMI, extra payments, and a full schedule.
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Compound Interest Calculator
Grow savings with recurring deposits, compounding options, inflation, tax, and a yearly schedule.
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Percentage Calculator
Calculate percent of a value, what percent X is of Y, and percentage change between two numbers.
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Tip Calculator
Calculate tip amounts and split bills between people.
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Tax & Payroll
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Invoice VAT Calculator
Calculate mixed-rate invoice VAT and compare line versus total rounding.
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Salary Calculator (Turkey)
Turkish payroll calculator - net to gross and gross to net with SGK, income tax, and stamp tax.
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VAT Calculator
Add or remove VAT/sales tax with country-specific rates.
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Dates & Time
Health
Units & Dimensions
Which tool do I need?
Finance & Everyday Math
- Estimate payments and total interest → Loan Calculator.
- Include housing costs in a payment estimate → Mortgage Calculator.
- Explore savings with recurring deposits → Compound Interest Calculator.
Tax & Payroll
- Compare mixed-rate invoice rounding → Invoice VAT Calculator.
- Add or remove tax from one amount → VAT Calculator.
Dates & Time
- Measure the interval between calendar dates → Date Difference Calculator.
- Find a meeting time across zones → Time Zone Converter.
Health
- Calculate an adult weight-to-height reference → BMI Calculator.
Units & Dimensions
- Scale a recipe and plan brownie cuts → Brownie Calculator.
- Convert a measurement to another unit → Unit Converter.
How should I interpret a calculated result?
Check units, dates, rates, and rounding before comparing results. A loan estimate depends on its payment assumptions; an invoice total depends on the selected rounding method. Inputs are processed on your device. The CSP restricts connections to this site (connect-src 'self'), rather than blocking all connections. Some tools load their engines or models from this site on first use; allow loading to finish before using them offline after the page has loaded.