Math & Calc tools

Calculate percentages, increases, and decreases

Calculate Body Mass Index from height and weight

Calculate loan payments, interest, and amortization

Calculate VAT amounts and totals

Calculate tips and split bills

Calculate aspect ratio and rescaled dimensions with 16:9 & 4:3 presets

Convert integers to Roman Numerals (e.g., 2026 to MMXXVI) and back

Calculate annual, monthly, weekly, and hourly pay rate conversions

Full-featured scientific and standard calculator with history, memory & trig functions