Methodology
This page explains the formulas, rate and rounding rules used across the site.
Fixed rate
All calculators on this site use the official irrevocable rate 1 EUR = 1.95583 BGN.
Formulas
- • BGN to EUR: amount in BGN ÷ 1.95583
- • EUR to BGN: amount in EUR × 1.95583
- • Dual price checks compare submitted values with the expected rounded result.
Rounding
User-facing values are displayed with two decimals using standard mathematical rounding.