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Web AppClient-Side ProcessingOpen Source

FX-82MS Scientific Calculator

An interactive web emulator of the classic fx-82MS scientific calculator.

savaliya-hemali.github.io/Scientific-Calculator-FX82

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01 — OVERVIEW

About FX-82MS Calculator

FX-82MS Scientific Calculator is a high-precision, interactive web emulator designed to bring the classic Casio fx-82MS experience directly to modern web browsers. Built with vanilla JavaScript, CSS3, and HTML5 Canvas, it accurately reproduces the 2-line dot-matrix LCD display, angle modes (DEG, RAD, GRAD), memory operations (STO, RCL, M+), trigonometric, hyperbolic, logarithmic, and power functions. Full keyboard shortcuts allow instant calculations without relying on mouse input.

02 — FEATURES

What It Does

LCD Display Engine

Accurately emulates the classic 2-line S-V.P.A.M. display with active status indicators (DEG, RAD, STO, M, HYP, ERROR).

Full Keyboard Shortcuts

Complete desktop keyboard mapping for numbers, basic operations, trigonometric keys, and memory functions.

Trigonometric & Hyperbolic

Comprehensive math suite including sin, cos, tan, sinh, cosh, tanh, and inverse functions with angle mode conversions.

Logarithmic & Powers

Includes base-10 log, natural ln, e^x, 10^x, square roots, cube roots, and arbitrary power exponents.

Memory & Variable Storage

Full STO (Store), RCL (Recall), and M+ memory buffer capabilities for multi-stage calculation workflows.

Zero-Dependency Speed

100% client-side JavaScript execution with instant load times and complete offline compatibility.

03 — PRIVACY

Privacy at a Glance

What never happens

No analytics, crash reporting, usage tracking, or advertising SDKs of any kind
Nothing is ever uploaded — the app has no servers, backend, or cloud infrastructure
No account, name, email, or phone number is required or collected
No location or device telemetry data is collected

Permissions it asks for

Keyboard & Focus Events — Required to capture calculator key shortcuts and physical keyboard input for calculations.

Local Storage Buffer — Allows saving persistent memory variables (M+, STO, RCL) across browser sessions.

Offline Execution — Runs 100% inside your browser — works without active internet connectivity.

Full details in the Privacy Policy (last updated August 28, 2026).

04 — STACK

Built With

JavaScriptHTML5 CanvasCSS3DOM APIKey ListenersLCD Display System

05 — SUPPORT

Legal & Support

FX-82MS Scientific Calculator is developed by Hemali Savaliya. Questions, bug reports, or feature requests? Check the GitHub repository or reach out via the contact form.

GitHub Repository Privacy Policy Contact Developer

06 — MORE