a-calcUltimate Precision · Ultimate Formatting

Not one of the best. The best.

⚡

10x Faster

500,000 calculations in 3.6s vs mathjs 36s. Not an optimization — a generation gap.

🎨

Thousands, percent, scientific, fractions, currency symbols, compact abbreviations — one fmt() call.

🌍

US 1,234.56 / EU 1.234,56 / Indian 1,23,456 / Chinese 万/亿 — switch instantly.

📐

Truncate, ceil, round-half-up, banker's rounding — financial-grade precision control.

💎

Decimal 50-digit / BigInt unlimited / WASM extreme performance — switch on demand.

🪶

mathjs 150KB + numeral 18KB = 168KB. a-calc is 20KB with more features and faster speed.

Native JavaScript

0.1 + 0.2 =

With a-calc

calc('0.1 + 0.2') =