Calculators

7 articles

Calculate VAT: pre-tax/all-inclusive formula and 2025 rates

Instantly calculate VAT to add or deduct. 20%, 10%, 5.5% and 2.1% rates with pre-tax ↔ all-inclusive formula.

Simulate your mortgage: calculate monthly payments, total loan cost and borrowing capacity based on your income.

Convert your gross salary to net. Employee contributions, income tax and monthly/annual simulator.

Calculate your Body Mass Index (BMI) and interpret your result according to WHO thresholds. Formula and reference table.

All percentage calculation formulas: % of a number, change, discount, increase and reverse percentage.

Calculate Amazon FBA fees and your real net margin before launching a product. Referral, fulfillment and storage fees.

How to calculate ROI and ROAS for your Google Ads, Facebook Ads or other channel campaigns? Formulas and practical examples.