What is the difference between margin and markup?

Margin is profit as a share of the selling price; markup is profit as a share of cost. A 50 % markup is a 33 % margin. The calculator shows both.

How are AI API costs estimated?

Tokens per request × requests per month × the provider’s per-token price, for input and output separately. Update the prices on the page as providers change them.

Calculators

Business & AI

Pricing, margins, valuations and AI cost estimates. · 4 tools

Price your work and size the numbers behind a business: hourly billing rates that cover overhead, margins and break-even, a quick valuation, and what an AI feature costs to run at scale.

Each calculator states its formula and lets you change the assumptions: overhead percentage, target profit, billable hours, token prices. Results are estimates for planning and quotes, not accounting figures, and nothing you type is stored.

AI API Cost CalculatorGPT-4o vs Claude 3.5 vs Gemini — compare API costs by token.AI Business CalculatorCalculate AI ROI for your company: time savings and payback period.AI Productivity CalculatorHow much do you save with ChatGPT, Copilot or Claude? Calculate ROI.Business Valuation CalculatorEstimate company value using EBITDA multiple, revenue multiple, P/E and DCF.

How to choose

Pricing your time: Start with the billing rate calculator: it turns a target salary, overhead and realistic billable hours into an hourly rate. Then check margin and markup on individual jobs so a discount never eats the whole profit.
Sizing an AI feature: Use the AI API cost calculator with your own token counts per request and expected monthly volume. The productivity and job-risk calculators are conversation starters that show assumptions openly rather than black-box scores.
Valuing a small business: The valuation calculator applies common multiples to revenue and earnings and shows the range, because a single number hides how much depends on the multiple you choose.

Business & AI

How to choose

Frequently asked questions