Free tools for small businesses
I built these calculators, checklists and templates for the small business owners, freelancers and e-shops I work with. Use them to check whether your ads pay off, set your prices, or see where AI can save you time.
Note: amounts are in Czech crowns (CZK), but the math works with any currency. Two tools, the VAT calculator and the freelancer hourly rate calculator, are specific to the Czech Republic: they use Czech VAT rates and the social and health insurance paid by Czech self-employed people (OSVČ).
AI visibility test: will ChatGPT recommend you?
12 questions, 2 minutes: find out whether ChatGPT, Gemini and Perplexity can find and recommend you, and what to fix first.
Start the test →Break-even calculator for e-shops
Work out how many orders and how much monthly revenue you need to cover your costs, and when you start making a profit. Chart included.
Open tool →Hourly rate calculator for Czech freelancers (OSVČ)
Find out what to really charge per hour to cover your costs, insurance and time off, and still take home what you want. Includes a rate breakdown.
Open tool →ROAS & ad cost share (PNO/ACoS) calculator
Calculate ROAS, ad cost share (PNO, the Czech equivalent of ACoS) and ad profit. Most importantly, get your break-even ad cost share based on margin, so you know whether your ads make or lose money.
Open tool →Czech VAT calculator
Calculate Czech VAT from a net or gross price. Rates of 21%, 12% and 0%. Get the base, the VAT amount and the gross price instantly.
Open tool →Margin & markup calculator
Calculate margin, markup and profit, and stop mixing them up. Enter the purchase price and one number, and it works out the rest.
Open tool →Marketing ROI calculator
Calculate the real return on your marketing: how much every crown you put in earns you, not just gross revenue. Based on margin, honestly.
Open tool →AI time & money savings calculator
See how many hours and how much money you save by using AI for routine tasks, and what you could do with that time.
Open tool →AI prompt library: 100 marketing prompts
100 ready-to-use prompts for ChatGPT, Claude and Gemini: social media, copywriting, ads, SEO, email and strategy. Copy and use.
Open tool →Marketing checklists & templates
Checklists to tick off (campaign launch, social media audit, SEO check) and templates to copy (Reels, case study, sales post).
Open tool →More tools on the way
I'm working on more calculators and helpers for marketing and running a business. Got an idea for something you'd find useful? Let me know.
Coming soon