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Free tools for the AI era
Calculate. Analyze. Decide. Automate. Practical business, Bangladesh, AI and productivity tools built to show the thinking behind the number — not just the number itself.
Explore
Tools by purpose
Start with a focused tool, then follow the related business logic.
Bangladesh
Tax, VAT & payroll decisions
Useful for pricing, salary planning and Bangladesh-specific calculations. Check the cited source before compliance or filing.
BangladeshBangladesh VAT Calculator
Calculate VAT-exclusive and VAT-inclusive prices using the standard 15% rate or another planning rate.
BangladeshSalary & Tax Calculator
Estimate Bangladesh income tax and take-home pay with assessment-year assumptions shown clearly.
Business
Know the economics behind the decision
Move beyond a headline number with unit economics, employee cost and break-even thinking.
BusinessEmployee Cost Calculator
Estimate the true monthly and annual cost of an employee beyond the headline salary.
BusinessProfit Margin Calculator
See revenue, cost, profit and margin from selling price and unit economics.
BusinessBreak-Even Calculator
Find the sales volume and revenue needed to cover fixed costs and reach a target profit.
BusinessInvoice Generator
Create a clean printable invoice with business details, line items, tax and totals.
AI
Turn AI ideas into business numbers
Scenario tools that make automation conversations measurable instead of speculative.
Personal & everyday
Simple tools, with useful context
Fast calculations that explain the method and the limits of the result.
Why these tools are different
Not just an answer. A decision you can understand.
Transparent
We explain the formula, inputs and assumptions so the result is not a black box.
Source-aware
Where a rule or benchmark matters, we point to the relevant authority or reference.
Business-minded
Where useful, the tool goes beyond the basic calculation to show what the number means.
Coming next
Business + AI tool roadmap
We are expanding around practical business questions rather than generic calculators: business pricing, markup, payroll, overtime, quotation, ROAS, CAC, LTV:CAC and AI token cost. The library will remain free and browser-based, with methodology and assumptions shown where they matter.