Calculator Portal
68 free calculators for German finance. Accurate results, clearly explained.
Taxes & Salary
Gross-to-Net Salary Calculator
From gross to net in seconds
Vehicle Tax Calculator
Calculate vehicle tax and compare cars
Side Income Tax Calculator
How much do you keep from side income?
Inheritance Tax Calculator
Calculate inheritance & gift tax
Property Tax Calculator
Calculate your new property tax
Freelance Rate Calculator
Calculate your fair freelance hourly rate
Usage Rights Calculator
Calculate fair usage rights for your creative work — with factor-based calculation following AGD guidelines.
Fuel Cost Calculator
Calculate fuel costs per trip and annually
Inflation Calculator
Calculate purchasing power loss and price trends
Tax Refund Calculator
Calculate your tax refund quickly and easily
Bitcoin Production Cost Calculator
Calculate production cost floor: hashrate, energy costs, halving projection
Severance Pay Calculator
Calculate severance pay: fifth-part rule, tax burden, optimization tips
ETF Savings Plan Calculator
Simulate ETF savings plans: compound interest, scenarios, withdrawal planning
Midijob Calculator
Calculate Midijob net pay: transition zone, social insurance savings, pension
Company Bike Calculator
Calculate company bike leasing: salary sacrifice savings, employer benefits
Startup Cost Calculator
Calculate startup costs: legal form, burn rate, runway, break-even
Active Pension Calculator
Calculate the 2026 Active Pension: up to €2,000 wage tax-free, net comparison, tax savings
Commuter Allowance Calculator
2026 commuter allowance: 38 cents from the first kilometre — deductions & real tax saving
EV Premium Calculator
Work out your 2026 German EV purchase premium — base, family and income bonus, up to €6,000
Overtime Calculator
Calculate overtime surcharge and net payout — current vs. planned law compared
Compound Interest Calculator
Calculate compound interest: lump sum, savings rate, interest gain & compounding effect
Tax Class Calculator
Find the best tax class combination for couples: III/V, IV/IV or factor method
Housing & Moving
Housing Benefit Calculator
Check your housing benefit eligibility
Mortgage Calculator
Calculate your mortgage with amortization schedule
Renovation Cost Calculator
Calculate renovation costs with KfW subsidies
Moving Cost Calculator
Calculate all moving costs including hidden expenses
Roommate Calculator
Split flatmate costs fairly
Cost of Living Calculator
Compare cost of living worldwide
Balcony Solar Calculator
Calculate balcony solar: yield, payback, self-consumption, CO₂ savings
Heat Pump Calculator
Calculate heat pump: costs, BAFA subsidies, payback, CO₂ savings
EV Cost Calculator
EV vs. combustion: TCO comparison, subsidies, charging costs, CO₂ balance
Broadcasting Fee Calculator
Calculate broadcasting fee: exemption, reduction, shared apartment split
Family & Social
Basic Income Support Calculator
Calculate your basic income support (formerly Bürgergeld) eligibility
Divorce Cost Calculator
Calculate and compare divorce costs
Child Support Calculator
Calculate child support using the Düsseldorf Table
Care Allowance Calculator
Calculate care allowance & combined benefits
Wedding Cost Calculator
Plan your wedding budget with regional prices
Parental Allowance (Elterngeld) Calculator
Calculate your German Elterngeld (parental allowance) 2026: basic & Plus, with monthly income overview for parental leave
School Year Cost Calculator
Calculate all school costs: supplies, lunch, transport, after-school care, class trips
University Cost Calculator
Plan your studies: semester costs, living expenses, BAföG, financing gap
Health Insurance Comparison Calculator
Compare statutory vs. private health insurance: costs, long-term projection
Sick Pay Calculator
Calculate sick pay: continued pay, block period, exhaustion of benefits
Breakup or Wedding?
The relationship check: How stable is your relationship really?
Child Cost Calculator
What does raising a child cost from 0-18? Childcare, clothing, education
Pet Cost Calculator
What does a pet cost? Dog, cat, small animal — monthly and lifetime
Early-Start Pension Calculator
Calculate the planned Early-Start Pension: what €10 a month grows into by retirement
Due Date Calculator
Calculate your due date with the Naegele rule — incl. pregnancy week, trimester & maternity leave
Ovulation Calculator
Calculate fertile days, ovulation & next period — not a contraception method
Driver's License Cost Calculator
What does a driving license cost? Calculate all costs: lessons, fees, exams
Building & DIY
3-4-5 Method Calculator
Check right angles using the Pythagorean theorem
Material Needs Calculator
Calculate tiles, paint, flooring & bulk materials
Staircase Calculator
Calculate rise, run & DIN 18065 compliance
Slope Calculator
Calculate slope with DIN standard compliance
Roof Calculator
Calculate roof area, rafter length & snow load
Mixing Ratio Calculator
Concrete, mortar, epoxy & more — exact mixing ratios
Health & Nutrition
Calorie Calculator
Calculate your calorie needs with macro split
BMI Calculator
Calculate and interpret your Body Mass Index
Macronutrient Calculator
Calculate macros for your nutrition goal
Water Intake Calculator
Calculate your personal daily water intake
Sleep Cycle Calculator
Calculate optimal bedtime: sleep cycles, hypnogram, sleep quality
Dental Cost Calculator
Calculate dental costs: fixed subsidy, co-pay, bonus booklet, hardship
Blood Alcohol Calculator
Estimate blood alcohol (BAC) with the Widmark formula — no statement on fitness to drive
Ideal Weight & Body Fat Calculator
Calculate ideal weight and body fat: Broca, Devine, BMI range & US Navy formula
Math & Calculators
Area Calculator
Calculate area and perimeter: rectangle, circle, triangle, trapezoid and more
Percentage Calculator
Calculate percentages: base value, percentage, change, markup & discount
Fraction Calculator
Add, subtract, multiply, divide, simplify and convert fractions
Rule of Three Calculator
Proportional, inverse and compound rule of three with step-by-step solution
Age Calculator
Calculate your exact age: years, months, days, days lived & countdown
Why Calculator Portal?
100% private
Your data stays in your browser. No login, no tracking.
Precise results
Current formulas, tax tables, and exemptions — regularly updated.
Completely free
All calculators are freely available. No hidden costs.
Made for Germany
Specifically built for German tax, social, and housing law.
How it works
Choose a calculator
Pick the right calculator for your question.
Enter your data
Fill in the fields — all inputs stay local in your browser.
Get your result
Your result appears instantly — with charts and explanations.
Disclaimer
All calculations on Rechenportal are for informational purposes only and are not legally binding. Results may differ from actual values, as individual circumstances, legislative changes, or regional specifics cannot be fully accounted for. For binding advice, please consult a tax advisor, lawyer, or the relevant authority.