# BoringToolsKit

> BoringToolsKit is a free collection of private, no-signup browser calculators and everyday tools for money, home, school, and work — built for anyone who wants instant answers without accounts or uploads. Most tools process inputs locally unless a page clearly labels an external request.

## Start here

- [All 833 tools](https://boringtoolskit.com/all-tools/): Complete searchable catalogue.
- [Practical guides](https://boringtoolskit.com/guides/): Plain-language guidance for formulas, assumptions, and planning decisions.
- [Calculation methodology](https://boringtoolskit.com/methodology/): Formula, rounding, sourcing, testing, and privacy standards.
- [Editorial policy](https://boringtoolskit.com/editorial-policy/): Review, correction, and commercial-independence policy.
- [Developer & agent resources](https://boringtoolskit.com/developers/): MCP server and machine-readable files for AI agents and developers.
- [Privacy policy](https://boringtoolskit.com/privacy/): What stays local and when an external request may occur.
- [Machine-readable tool knowledge](https://boringtoolskit.com/tool-knowledge.json): Evidence-labeled records generated from the live catalogue and authored methodology.
- [Full tool knowledge for language models](https://boringtoolskit.com/llms-full.txt): Complete catalogue with formulas, assumptions, and sources where authored.
- [MCP server](https://boringtoolskit.com/mcp): Model Context Protocol server exposing the calculators as callable tools for AI agents (Streamable HTTP). Server card: https://boringtoolskit.com/.well-known/mcp/server-card.json.
- [Agent skills index](https://boringtoolskit.com/.well-known/agent-skills/index.json): Agent-skills discovery manifest listing BoringToolsKit capabilities.
- [Reproducible scenario research](https://boringtoolskit.com/research/): Downloadable hypothetical benchmark tables with explicit formulas and limitations.
- [Marketplace Seller Fee Comparison](https://boringtoolskit.com/research/marketplace-seller-fee-scenarios/): Citable 20-scenario comparison of Etsy, eBay, Amazon Individual, and Shopify Basic fee stacks with CSV download.

## Tool collections

- [Finance and investing](https://boringtoolskit.com/calculators/finance/)
- [Construction and measurement](https://boringtoolskit.com/calculators/construction/)
- [Seller and business](https://boringtoolskit.com/calculators/seller-business/)
- [Time and work](https://boringtoolskit.com/calculators/time-work/)
- [Energy and electrical](https://boringtoolskit.com/calculators/energy-electrical/)
- [Converters](https://boringtoolskit.com/calculators/converters/)
- [Text and developer tools](https://boringtoolskit.com/calculators/text-developer/)
- [Generators](https://boringtoolskit.com/calculators/generators/)
- [Health](https://boringtoolskit.com/calculators/health/)
- [Everyday calculators](https://boringtoolskit.com/calculators/everyday/)

## Decision guides (topics)

- [Topic index](https://boringtoolskit.com/topics/): Goal-first decision paths that line up the right tools for a real task.
- [Buying a Home](https://boringtoolskit.com/topics/buying-a-home/): From affordability to closing costs, work through the full home-buying decision with the tools that estimate each piece.
- [Getting Fit & Nutrition](https://boringtoolskit.com/topics/getting-fit/): Estimate your energy needs, body composition, and activity targets so training and nutrition goals are grounded in real numbers.
- [Paying Off Debt](https://boringtoolskit.com/topics/paying-off-debt/): Compare payoff strategies, consolidation, and the true cost of borrowing before you commit to a plan.
- [Investing for the Future](https://boringtoolskit.com/topics/investing-for-the-future/): Model compounding, growth, and long-term goals so you can see how time and contributions matter.
- [Selling Online](https://boringtoolskit.com/topics/selling-online/): Price for profit after marketplace fees, ad spend, and platform costs — understand your take-home before you list.
- [Home Improvement & DIY](https://boringtoolskit.com/topics/home-improvement-diy/): Estimate materials, coverage, and cost for the common renovation and construction projects around a home.
- [Saving Energy & Utilities](https://boringtoolskit.com/topics/saving-energy-utilities/): Estimate the cost of electricity, EV charging, lighting, and heating before you upgrade or cut back.
- [Student Success](https://boringtoolskit.com/topics/student-success/): Plan grades, study targets, and school budgets with the tools that keep academic goals measurable.
- [Content & Social Growth](https://boringtoolskit.com/topics/content-social-growth/): Set audience, engagement, and revenue targets for your content across the platforms you publish on.
- [Physics Study](https://boringtoolskit.com/topics/physics-study/): Check the numbers behind mechanics and energy problems with the tools that solve each quantity directly.
- [Chemistry Study](https://boringtoolskit.com/topics/chemistry-study/): Solve concentration, dilution, and reaction problems with stoichiometry and lab-ready estimates.
- [Music & Audio Production](https://boringtoolskit.com/topics/music-production/): Convert tempo, note, and frequency relationships so you can move between tools and formats without guesswork.
- [Get a Job & Know Your Pay](https://boringtoolskit.com/topics/get-a-job/): Compare salary and hourly offers, model take-home pay, and plan a raise or freelance rate so you negotiate from real numbers.
- [Personal Finance Reset](https://boringtoolskit.com/topics/personal-finance-reset/): Rebuild your money baseline: set a savings goal, retire debt, build an emergency fund, and project retirement in one order.
- [Grow a Business](https://boringtoolskit.com/topics/grow-a-business/): Price for margin, find the break-even point, and value customers so growth decisions are grounded in unit economics.
- [Cooking at Home](https://boringtoolskit.com/topics/cooking-at-home/): Timing, conversions, and ratios for food that turns out right the first time.
- [Planning a Trip](https://boringtoolskit.com/topics/planning-a-trip/): Budgets, driving time, time zones, and conversions for trips that plan themselves.
- [Health & Body Tracking](https://boringtoolskit.com/topics/health-tracking/): Pressure, heart rate, alcohol, sleep, and weight numbers explained.
- [Car & Vehicle Numbers](https://boringtoolskit.com/topics/car-ownership/): EV charging, tires, fuel, and performance math for drivers.
- [Photo & Video Production](https://boringtoolskit.com/topics/photo-video-production/): Frame rates, shutter speeds, timelapse, and audio math for creators.
- [Pet Care Math](https://boringtoolskit.com/topics/pet-care/): Food portions, litter, age, and annual cost for pet owners.
## Decision-focused hubs

- [Small business tools](https://boringtoolskit.com/small-business-tools/)
- [Seller tools](https://boringtoolskit.com/seller-tools/)
- [Construction estimate tools](https://boringtoolskit.com/construction-estimate-tools/)
- [BoringToolsKit energy cost tools](https://boringtoolskit.com/energy-cost-tools/): Appliance electricity cost, bills, charging, runtime, and savings calculators.