Free Online Calculators for Creators, Sellers and Everyday Money
17 free calculators for creators, sellers and everyday money questions. Every one shows its assumptions and runs in your browser.
Creator calculators
Business, ecommerce and GST calculators
- Meta Ads CostFacebook & Instagram CPM, CPC, reach & ROASBusiness
- Ecommerce ProfitProfit, margin & break-even by countryBusiness
- GST CalculatorIndia GST: inclusive / exclusive, CGST/SGST/IGSTBusiness
- Profit MarginMargin, markup & selling priceBusiness
- ROI & ROASReturn on investment and ad spendBusiness
- Break-evenUnits & revenue to cover costsBusiness
Income tax calculators
Everyday calculators and converters
Estimates for planning only. Not tax or financial advice. Last verified: 2026-10-25