developer tools

tools that stay
in your browser

Gerathor is a suite of focused utilities for developers and builders: passwords, hashes, UUIDs, Base64, technical calculations, unit conversion, token counting, and AI cost estimates.

pass, calc, and tokens are live

tools

Choose a working utility and get straight to the task.

The Gerathor homepage is a directory for live tools, but each card points to a finished utility with a specific job. There are no disabled tools, placeholder launches, or unfinished destinations listed here.

available
pass

Cryptographic toolkit for everyday development work. Generate secure passwords, compute hashes, create UUIDs, and encode or decode Base64 locally.

passwords hash uuid base64
Open pass.gerathor.com/ ->
available
calc

A multi-mode calculator for technical work. Use scientific functions, programmer conversions, unit conversion, and typed expressions in one place.

scientific programmer unit converter expressions
Open calculator.gerathor.com/ ->
available
tokens

Count tokens and estimate API costs for popular AI models. Paste your prompt, pick your model, and get an instant cost breakdown.

gpt-4o claude gemini cost estimate
Open tokencalculator.gerathor.com/ ->

guide

What each tool is for

Gerathor is intentionally small, but the page gives enough context for visitors to understand the purpose, scope, and value of every linked utility.

01pass.gerathor.com

Password, hash, UUID, and Base64 utilities for developers

Pass is built for short, repeatable security and encoding tasks: creating strong random passwords, checking hash output, generating identifiers, and converting Base64 text without leaving the browser. It is useful when preparing examples, testing APIs, documenting integrations, or cleaning up data during development.

  • Password generation with configurable length and character groups.
  • Hash helpers for comparing deterministic outputs while testing.
  • UUID generation for fixtures, mock records, and API payloads.
  • Base64 encode and decode helpers for tokens, headers, and examples.
02calculator.gerathor.com

Technical calculator with scientific, programmer, and unit modes

Calc is available as a working calculator for engineering and programming tasks. It brings expression entry, scientific operations, base conversion, binary-oriented programmer helpers, and unit conversion into a focused tool so users do not need several separate tabs for simple calculations.

  • Scientific calculations for math-heavy notes and quick validation.
  • Programmer mode for decimal, binary, hexadecimal, and related conversions.
  • Unit conversion for common technical measurements.
  • Expression parsing so longer calculations can be edited and reviewed.
03tokencalculator.gerathor.com

Token counting and cost estimates for AI prompts

Tokens helps writers, developers, and AI builders estimate prompt size and approximate API costs before sending requests. It is designed for quick iteration on system prompts, examples, long inputs, and model comparisons where token limits and cost visibility matter.

  • Token estimates for popular model families used in AI development.
  • Cost previews for prompt experiments and planning.
  • A paste-and-check workflow for drafts, examples, and user messages.
  • Clear breakdowns that help users shorten prompts before production use.

use cases

Practical workflows the suite supports

The site is meant to be useful even before a visitor opens a subdomain: it explains the jobs the tools cover and how they fit into common development routines.

01

Prepare API examples

Generate IDs, encode sample headers, calculate payload values, and estimate AI prompt costs while writing documentation or testing an integration.

02

Validate implementation details

Compare hashes, convert number bases, check units, and verify small calculations before committing code or sharing a technical note.

03

Keep sensitive drafts local

Use browser-based utilities for temporary strings, prompts, and calculations so everyday developer tasks do not require account creation or uploads.

principles

Small tools, clear boundaries

The suite is organized around privacy, speed, and simple interfaces. Visitors should know what each tool does before they click, and every listed destination should be ready to use.

01
local first

Tool input is processed in the browser whenever the feature allows it. The suite is designed for private, quick tasks that should not require an account.

02
zero friction

Each tool opens directly from the directory. No sign-up flow, onboarding wall, or forced project setup is required before the core utility works.

03
focused tools

Gerathor separates utilities by job so each interface stays fast, readable, and easy to return to during real development work.