Privacy-first tools and calculators
Solve the practical problem in front of you.
Use fast calculators and browser-local utilities for AI costs, local hardware, automation, website planning, and everyday decisions.
- No account required
- Runs in your browser where possible.
- Inputs are not stored by Useful Atlas.
Your browser-local toolbox
Recently used tools
Pin repeat-use tools so they stay here while recent tools change.
Start with a tool
Useful now, without an account
What Is My IP?
Network lookup required. See the public IPv4 or IPv6 address visible to the internet. Your IP is processed for the result and abuse prevention, but is not saved to the Useful Atlas application database.
Open toolQR Studio
Generate static QR codes, decode local QR images or camera frames, and inspect destinations before opening them. No upload needed.
Open toolPDF Toolbox
Add text, highlights, drawings, or a visual signature, then merge, reorder, extract, or ZIP PDF pages without uploading documents.
Open toolImage Toolbox
Resize and convert images, inspect common metadata including GPS, and create a privacy-cleaned copy locally for supported formats.
Open toolCoder Box
Format JSON, convert CSV, preview Markdown, encode Base64 or URLs, inspect JWT payloads, generate UUIDs and hashes, and clean text locally.
Open toolCan I Run This AI Model? Local AI Checker
Check whether a computer can run a specific local AI model from GPU VRAM, RAM, model size, quantization, KV cache, context length, and active sessions.
Open toolStable Diffusion vs Cloud GPU Payback Calculator
Compare local Stable Diffusion or ComfyUI hardware cost with cloud image pricing using your own render time, power draw, electricity rate, image volume, and resale assumptions.
Open toolAI API Cost Calculator
Estimate AI API spend from input tokens, output tokens, request volume, token prices, cached-input discounts, and monthly usage assumptions.
Open toolChoose by task
Go straight to the result you need
Check local AI hardware
See whether your RAM, VRAM, model size, quantization, and context window are a realistic fit.
Calculate API costEstimate AI API spend
Model token volume, request frequency, current provider prices, caching assumptions, and monthly usage.
Compare AI costCompare local and cloud AI
Compare API usage with hardware, electricity, maintenance, resale, and total cost of ownership.
Calculate GPU paybackCompare local image AI with cloud APIs
Calculate when a Stable Diffusion or ComfyUI GPU setup could pay back against cloud image generation.
Estimate automation ROIMeasure automation ROI
Estimate time saved, labor value, monthly benefit, payback, and 12-month ROI for a workflow.
Open Image ToolboxPrepare an image locally
Resize, compress, or convert PNG, JPEG, and WebP images without uploading the file.
Privacy and methodology
Clear inputs, visible assumptions, practical results
Useful Atlas tools help you compare scenarios and understand the assumptions behind the result.
Runs in your browser where possible.
No upload needed for browser-local tools.
Inputs are not stored by Useful Atlas.
Use a tool without creating an account.
Assumptions stay visible.
Review editable inputs, methods, and limitations before using a result.
Tool-connected guides
Go deeper after the calculator
Use focused guides when a result needs setup steps, tradeoffs, or a more complete decision path.
Local AI
Local AI setup guides, model-choice help, hardware checks, privacy tradeoffs, and small-team self-hosting resources.
AI Automation
Guides, comparisons, and calculators for choosing AI agents, automation stacks, API usage, self-hosting, and workflow cost tradeoffs.
Editor picks
Guides worth starting with
Can I Run AI Locally on My Windows PC? Hardware Guide
Check whether your Windows PC can run local AI, what RAM, GPU, VRAM, and storage matter, and when upgrades or cloud APIs make more sense.
9 min read
GuideBest AI Models to Use With Ollama for Beginners
Pick beginner-friendly Ollama models for chat, coding, summaries, weak PCs, and local AI testing without downloading models your computer cannot run.
7 min read
GuideAI Agent Builders Compared: n8n, Dify, Make, Zapier
Compare n8n, Dify, Make, and Zapier for AI workflows, agents, self-hosting, integrations, privacy, and small business automation.
9 min read
GuideSelf-Host n8n or Dify: Cost and Privacy Tradeoffs
Compare self-hosting n8n or Dify with hosted plans, including planning cost ranges, setup time, AI API costs, privacy, and maintenance.
9 min read
Latest updates