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Grade average calculator
Calculate an arithmetic grade average and see the sum and number of grades.
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Tools for Polish rules—with the calculation explained, not just the result.
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Polish tax microaccount generator
Generate the structure of a Polish tax microaccount from a PESEL or NIP.
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Attendance calculator
Calculate your current attendance and the consecutive presences needed for a target.
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Leasing calculator
Estimate a monthly lease payment, total fees and financing cost.
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Polish working time calculator
Calculate nominal monthly working time under Poland’s basic working-time system.
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Polish high-school admission points calculator
Estimate Polish secondary-school admission points from exams and achievements.
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Employment seniority calculator
Calculate one continuous employment period and add previously recognised years.
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Polish annual leave calculator
Estimate annual or proportional paid leave from seniority and working fraction.
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Polish Treasury bond calculator
Run a simplified fixed-rate Polish Treasury bond investment simulation.
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123EducationGrade averages, attendance and admission points.8hEmploymentWorking time, seniority and annual leave.PLNFinance and taxVAT, interest and transparent financial calculations.%Business and leasingFinancing costs, payments and buyouts.↗Savings and investingBonds, savings and investment returns.♥Health and fitnessPace, sleep and indicative energy needs.+Pregnancy and familyIndicative pregnancy and cycle dates.24hTime and dateDate differences, hours and age.kmAutomotiveFuel calculations and tire-size comparisons.∑MathematicsPercentages and everyday calculations.IDPolish documents and numbersTools based on published Polish official standards.AaText and fontsLocal text and Unicode transformations.
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Education
How do Polish grade averages and admission points work?
Learn when to use an ordinary or weighted grade average and how Polish exam, school and university admission points differ.
Read guide →8h
Employment
How should Polish working-time, leave and pay results be read?
Understand the difference between Polish working time, seniority, leave, compensation, overtime and notice periods.
Read guide →PLN
Finance and tax
How can Polish VAT, salary and interest calculators be used safely?
Learn how to prepare rates for Polish VAT, gross-to-net salary, interest and mortgage-overpayment calculators.
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Transparent calculations, private by default
Where does the result come from?
Every engine uses typed inputs, validation and tests. Each page explains its formula, example, limitations and sources.
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