Daily Math & Conversions·Zero-Upload Browser Execution

Scientific Expression Evaluator

Safely evaluate algebraic and trigonometric formulas (`sin`, `cos`, `tan`, `sqrt`, `log`, `abs`, `pi`, `e`) locally.

Mathematical Expression (`+`, `-`, `*`, `/`, `^`, `sqrt`, `sin`, `cos`, `tan`, `log`, `pi`, `e`)

Evaluated Result

Syntax error in expression.

More in Daily Math & Conversions

10-Dimension Unit Converter

Instant precision conversions across Length, Mass, Temperature, Digital Storage, Speed, Pressure, Energy, Area, Volume, and Time.

Percentage, Margin & VAT Calculator

Compute VAT/sales tax (inclusive or exclusive), percentage deltas, retail discounts, and net profit margins.

Compound Growth Visualizer

Project multi-year savings and compound interest with monthly contributions and an interactive Recharts breakdown.

Color Palette & WCAG Contrast Inspector

Convert HEX colors to OKLCH, RGB, and HSL, preview harmonious tints, and verify WCAG 2.1 AA/AAA accessibility ratios.

Date Difference & Unix Epoch Lab

Convert Unix timestamps (seconds or milliseconds) to ISO-8601 UTC/local dates and calculate exact calendar spans.

IPv4 CIDR & Subnet Calculator

Compute network address, broadcast address, subnet mask, usable host range, and total host capacity from CIDR notation.