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76 specialised online calculators across twelve topic areas — free, with worked examples, no sign-up, in ten languages.
Whether tax returns, housing-benefit applications, mortgage rates, recipe quantities or pregnancy weeks — Ultra Calculator bundles 76 specialised online calculators across twelve topic areas. Each calculator shows the full step-by-step calculation, provides concrete examples and cites the underlying sources or laws. All calculators are free, require no registration and are available in ten languages — important also for the international workers living and working in Germany. Choose your topic below and go straight to the matching calculators and guides.
Quick access to the most-used tools
Salary, tax and cost questions for employees, families and self-employed people.
Related guide: Gross and net salary in Germany – taxes, social charges and the payslip explained
Calculators for social support, family benefits, sickness benefits, unemployment and pension planning.
Related guide: Citizenship allowance, housing allowance and child supplement – understanding German welfare
Calculate capital growth, savings plans, loan payments and interest costs in a clear way.
Related guide: Understanding ETFs, savings plans and compound interest
An overview of buying, financing, renting and ongoing property costs.
Related guide: Buying property in Germany – financing, closing costs, rental yield and property tax
Understand table pay by pay grade and step clearly.
View all 2 calculatorsRelated guide: TVöD and TV-L explained – pay groups, experience steps and annual gross in the German public sector
Health calculators with careful interpretation and clear limits.
Related guide: BMI, calorie needs and calorie deficit – putting the numbers in context
Cycle, pregnancy and family planning at a glance.
Related guide: Understanding pregnancy weeks, ovulation and fertile days
Everyday math, grades and conversions with visible calculation steps.
Related guide: Rule of three, percentages and fractions – everyday maths done right
Calculators for working hours, vacation entitlement, date differences, age and business days.
Related guide: Working time, hours and industrial minutes explained
Cooking calculators for grams, milliliters, tablespoons, teaspoons, recipe portions and pizza dough.
Related guide: Understanding kitchen conversions for grams, ml, tablespoons and teaspoons
Estimate and compare vehicle costs, energy, household expenses and selected everyday topics quickly.
Related guide: Calculating real car costs – fuel, electricity, tax and financing
Audio calculators for sound engineering, studios, live sound and acoustics: dB, delay, BPM, wavelength, levels and file sizes.
Related guide: Understanding audio calculators for dB, delay, wavelength and BPM
Currently 76 specialised online calculators across twelve topic areas — from finance and taxes to social benefits, pregnancy and family, kitchen, mathematics and audio. The catalogue keeps growing.
Yes. All calculators are free to use without registration, fees or hidden limits. The site is supported by carefully placed advertisements.
In ten languages: German, Polish, English, French, Spanish, Portuguese, Romanian, Ukrainian, Hungarian and Arabic. Switch the language using the menu at the top right.
Each calculator shows the full step-by-step calculation directly below the result — formula, substituted values and intermediate steps. Every result is traceable and verifiable.
Yes. Year-dependent rules such as tax tariffs, social-benefit rates and collective wage tables live in versioned rule files and are updated with every legal change.
