About SimpleLifeCalc
Practical tools for clearer decisions
SimpleLifeCalc brings useful calculators, straightforward learning, planning tools, guides, and free resources together in one calm place.
Whether you are checking a percentage, planning your grades, working out a date, managing your money, or running an online business, the goal is the same: help you understand the numbers and decide what to do next.
What you can do here
- CalculatorsGet quick answers for everyday math, school, time and dates, work and money, selling, pricing, profit, and business decisions.Browse calculators
- Seller ToolsFind platform-focused tools for Etsy, eBay, Shopify, Amazon FBA, KDP, IngramSpark, print-on-demand, handmade businesses, and more.Open seller tools
- GuidesRead plain-English explanations for the questions behind the numbers — fees, pricing, profit, publishing, selling, planning, and more.Read guides
- Courses & LessonsLearn complete processes through short, focused lessons that connect practical explanations with calculators and resources.Start learning
- Free ResourcesUse downloadable planners, worksheets, trackers, checklists, workbooks, and cheat sheets designed to help you keep working after the calculation is finished.Get resources
- Planning ToolsTurn numbers into action with practical planning tools, including the Seasonal Selling Planner and other business-planning experiences.Open the planner
SimpleLifeCalc by the numbers
- 151
- Calculators
- 98
- Guides
- 11
- Courses
- 34
- Lessons
- 75
- Free Resources
More than an answer
- CalculateStart with your own numbers and get a clear result.
- UnderstandSee the formula, explanation, example, or guide behind the answer.
- PlanTurn the result into a practical next step.
- LearnBuild the skill through a lesson, course, or related resource.
Built for real-life decisions
SimpleLifeCalc supports several kinds of people rather than one narrow audience — always with practical answers, never professional advice.
- Everyday lifeShopping, percentages, discounts, fuel, measurements, and everyday calculations.
- StudentsGrades, GPA, coursework, exams, and academic planning.
- Work & moneyPay, hours, income, savings, budgets, and personal financial calculations.
- Sellers & entrepreneursPricing, fees, profit, advertising, inventory, returns, goals, and business planning.
- Creators & publishersKDP, IngramSpark, print-on-demand, printables, handmade products, and digital businesses.
Our principles
- Clear before cleverTools should be easy to understand without unnecessary complexity.
- Show the mathWhenever possible, we explain the formula, inputs, result, or a worked example — so you understand the answer rather than simply receiving a number.
- Useful over flashyNo cluttered dashboards, gimmicks, or unnecessary steps between you and the answer.
- Built for real decisionsEvery calculator and resource should help answer an actual question or support a practical next action.
- Mobile-first & accessibleInterfaces stay readable, responsive, keyboard-friendly, and usable across devices.
- Free and low-frictionThe tools on this site are free to use, with no sign-up standing between you and an answer.
Numbers you can understand
SimpleLifeCalc is built around transparent calculations and plain-English explanations. Where formulas, platform rules, fees, or other assumptions matter, the goal is to make those assumptions visible rather than hide them behind a black box.
Calculators are tools for understanding and planning. They are not a substitute for professional medical, legal, tax, or financial advice when professional advice is appropriate.
- Clear formulas and worked examples
- Source-aware platform information where relevant
- No guaranteed income, profit, rankings, or results
- Privacy-conscious and low-friction tools
- Accessible contact, privacy, and terms pages