Find the right guidebook for your next project
Each collection pairs approachable explanations with the calculators our community reaches for most. Skim the overview to map your goals, then launch the tools to tailor the math to your situation.
- Focused themes cover personal finance, wellness, travel, science and more.
- Tables, checklists and prompts keep momentum strong as you work through each topic.
- New guidebooks appear regularly—bookmark favorites and share them with your team.
Fresh tools for sports bettors
Building a responsible wagering plan? Pair our latest calculators to size bets, compare odds formats, and explore arbitrage opportunities before risking your bankroll. Each tool includes practical checks on bankroll discipline so you can keep decisions data-first.
- Moneyline Odds Converter keeps American, decimal, and fractional listings in sync so your implied probabilities stay accurate.
- Parlay Odds Calculator breaks down multi-leg tickets with step-by-step math and bankroll reminders.
- Sports Betting Arbitrage Calculator highlights risk-free wagering windows and stake splits when odds drift between books.
Collections you can explore today
Money Mastery Guidebook
Build a foolproof budget, tackle debt with confidence, and map savings milestones you can celebrate.
Wealth Builder Guidebook
Explore calculators for home purchases, investing strategies, and retirement checkpoints.
Side Hustle Success Guidebook
Discover calculators that help your side business thrive, from pricing to profitability.
Insurance Insight Guidebook
Learn how coverage protects your finances, with tools to compare premiums and deductibles.
Healthy Habits Guidebook
Improve wellness with calculators for nutrition, sleep, stress, and daily routines.
Green Living Guidebook
Explore calculators for energy savings, renewable upgrades, and sustainable homes.
Happy Pets Guidebook
Budget for pet care, track nutrition, and plan long-term wellness costs.
Travel Smart Guidebook
Plan memorable trips with budgeting, insurance, rewards, and packing calculators.
Gardening Guidebook
Use planting, watering, and yield tools to grow fresh produce with less guesswork.
Home Makeover Guidebook
Plan renovations, energy upgrades, and material budgets with handy calculators.
Savvy Car Ownership Guidebook
Use fuel, loan, and maintenance tools to manage vehicle costs across each season.
College Success Guidebook
Budget for tuition, compare majors, and track grades with key education calculators.
Culinary Companion Guidebook
Streamline meal prep, grocery spending, and nutrition goals with cooking calculators.
Outdoor Adventure Guidebook
Pack smarter and budget for epic hiking or camping trips with gear planners.
Home Brewing Guidebook
Brew beer, cider, and wine with recipe, ABV, and fermentation calculators.
Photography Guidebook
Capture stunning images and manage shoots, pricing, and edits with helpful tools.
Kids Financial Responsibility Guidebook
Teach children budgeting basics, saving habits, and goal planning with tools.
Immigration Guidebook
Navigate visas, fees, and relocation with step-by-step tools for major moves.
Strange Physics & Cosmology Guidebook
Probe multiverse gambles, warp drives, and end-of-universe scenarios with grounded context.
Exotic Math Guidebook
Explore hyperoperations, fractals, and mind-bending math frontiers with guided context.