Free online calculators: VAT, percentage, mortgage and more...

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Percentage Calculator

Calculate increases, decreases and percentage changes instantly for any financial or technical value.

VAT Calculator

Add or split VAT from any taxable base with up-to-date rates.

Mortgage Calculator

Monthly payment and amortization simulator for mortgage loans.

IP Subnet Calculator

Subnet mask, host range and network identifier calculator for engineers and admins.

Easy and fast online calculators

Calculafy helps you solve daily calculations in seconds: VAT, percentages, mortgage payments, compound interest and subnet IP ranges. You can calculate invoice totals, discounts, salary scenarios, loan costs and network parameters with clear formulas and practical examples, without installing anything.

Coming soon in Calculafy

These calculators are in roadmap and will be published in upcoming updates.

Net Salary Calculator

Coming soon

Estimate your monthly net salary from annual gross income and tax deductions.

Exam Score

Coming soon

Estimate your final score with right answers, penalties and official weighting.

Specialized Tools

Accurate solutions for technical and financial sectors.

Finance

  • Simple InterestComing soon
  • Profit MarginComing soon
  • Return on Investment (ROI)Coming soon
  • Currency ConverterComing soon

Math

  • Quadratic EquationsComing soon
  • Least Common MultipleComing soon
  • Rule of ThreeComing soon
  • FactorialComing soon

Health

  • BMI (Body Mass Index)Coming soon
  • Daily CaloriesComing soon
  • Due DateComing soon
  • Daily HydrationComing soon

Engineering

  • Energy UnitsComing soon
  • Ohm's LawComing soon
  • Hydrostatic PressureComing soon
  • Torque and MomentComing soon