Engineering Lab • Client Utilities

Tools & Utilities

Client-side calculators, converters, and engineering tools built with native web standards. Zero tracking, zero telemetry, offline-capable.

PSC examination score calculator with official -20% negative marking penalty and merit rank analysis.

Real-time Kathmandu Earth POV sky animation, Sun & Moon positions with day/night transitions, Meeus ephemeris, and Grahan simulator.

Dynamic personal and married income tax calculator conforming to Nepal IRD fiscal acts, Social Security Fund (SSF), and CIT deductions.

131-year O(1) bit-packed BS calendar with dynamic Kathmandu astronomical Tithis, festivals, and public holidays.

Instant bidirectional date converter between Bikram Sambat (BS) and Gregorian (AD) calendars with stress-tested accuracy.

Daily official foreign currency buy and sell exchange rates from Nepal Rastra Bank with interactive trendlines.

Federation of Nepal Gold & Silver Dealers bullion tracker and price calculator with Tola-Gram conversions.

Daily wholesale and retail market produce prices from Kalimati Fruits & Vegetable Board with category filters.

Convert land cadastral metrics across Ropani-Aana-Paisa-Daam (Hilly), Bigha-Katha-Dhur (Terai), and metric square meters.

In-browser RFC 8259 parser, collapsible tree explorer, syntax repair, and metrics with zero telemetry.

Vector SVG/Canvas QR generator with live camera optical barcode detector and customizable visual styles.

Monthly loan repayment calculator with interactive interest breakdown and amortization schedules.

Calculate standard 13% VAT forward and reverse amounts, with optional restaurant service charges.

Browser-side batch image optimization. Convert PNG and JPEG to next-gen WebP and AVIF formats.

Streaming conversational intelligence terminal running neural reasoning models with real-time SSE.