Tech Calculators
Free online calculators for technology, software development, sustainability, and digital business. Compare EV costs, measure your carbon footprint, set your freelance rate, compare LLM API prices, estimate YouTube ad revenue, and calculate the true cost of meetings.
AI & Developer Tools
- LLM API Cost Calculator — Compare GPT-4o, Claude, Gemini pricing per token with daily, monthly, and annual cost breakdowns
Creator & Freelance Economy
- YouTube Earnings Calculator — Estimate channel ad revenue by niche, CPM, and monthly views
- Freelance Rate Calculator — What should I charge per hour? Accounts for taxes, health insurance, and realistic billable hours
EV & Sustainability
- EV vs Petrol Calculator — 10-year total cost of ownership comparison for electric vs gasoline vehicles, including incentives and break-even
- Carbon Footprint Calculator — Annual CO2 emissions from home energy, transport, diet, and shopping, vs US and world averages
Business Tools
- Meeting Cost Calculator — Calculate the real dollar cost of any meeting with a live running timer