thaitools.techPractical tools for life in Thailand
English interface

ROI calculator

Calculate return on investment from proceeds and investment cost.

Limited scopeCheck before reuseGeneral formula · User-supplied assumptions
Saves this tool's name on this device only (up to 20). No form values.
Only visible result text is included. Form fields are not read. Review sensitive values before sharing.

Arithmetic estimate only. Rates, returns, attribution and business inputs are not predictions or advice.

Enter values, then process to see the result.

How to use it

  1. Set the assumptions requested by the roi calculator.
  2. Calculate return on investment from proceeds and investment cost.
  3. Compare the result with the displayed formula and any real business costs before acting.

Important limitation

A scenario based on entered assumptions; it does not predict returns, rates, attribution or business performance.

The interactive form is fully localized in English.

Reviewed 2026-09-16; next review 2027-03-16.

The stated proceeds-minus-cost ROI formula and denominator checks have been reviewed. Taxes, timing, risk and cash-flow timing are excluded.

Sources

Google Ads glossary — ROIGoogle Ads Help · opens in a new tabSupports the stated arithmetic only; rates, returns and business inputs are not verified.Source checked 2026-09-16
Recorded updates

Review history

Site changelog

Dates describe the review scope recorded below. A page update does not mean every source was checked again.

  1. Last recorded source/method review

    The stated proceeds-minus-cost ROI formula and denominator checks have been reviewed. Taxes, timing, risk and cash-flow timing are excluded.

Related tools

Quotation PDF generatorCreate a general quotation locally from parties, line items, prices and your terms.Purchase order PDF generatorCreate a general purchase order locally from buyer, seller, line items and terms.Break-even point calculatorEstimate break-even units from fixed cost, unit price and variable unit cost.ROAS calculatorCalculate conversion value divided by advertising spend.