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Evan Miller

I'm a software engineer who builds web applications and data tools. I personally implement and verify the formula and logic behind every calculator on Launch Hub. I publish them as free online tools so anyone can get an answer without signing up or paying.

Currency Risk Exposure Calculator

This tool helps individuals, loan applicants, and financial planners estimate potential losses from currency exchange rate fluctuations. It calculates exposure across multiple foreign currency holdings using current or projected exchange rates. Use it to adjust personal budgets or investment strategies…

Rights Issue Dilution Calculator

This tool helps individual investors and financial planners estimate ownership dilution from upcoming rights issues. It calculates changes to shareholding percentage, total investment needed, and post-issue value. Use it to make informed decisions before participating in a rights offering.

Litter Box Cleaning Frequency Calculator

This tool helps cat owners determine how often to clean their litter box based on household factors. It accounts for the number of cats, litter type, and box usage patterns. Use it to maintain a hygienic home environment for both…

Cheese Aging Duration Estimator

Estimate how long to age different cheese types at home with this simple tool. It helps home cooks and hobbyists plan cheese-making timelines accurately. Adjust inputs for your aging environment to get personalized duration recommendations.

Carton Calculator

This carton calculator helps e-commerce sellers, traders, and small business owners optimize shipping and storage costs. It calculates total carton requirements, dimensional weight, and cost estimates for bulk orders. Use it to streamline logistics planning for your trade operations.

Platform Listing Fee Calculator

Calculate total listing fees across e-commerce and trade platforms to protect your profit margins. This tool helps sellers, traders, and small business owners estimate costs before posting products. Adjust variables to match your platform’s fee structure and pricing strategy.

Tattoo Cost Estimator

Estimate the total cost of your next tattoo with this simple tool. It factors in common pricing variables used by professional tattoo artists. Plan your budget ahead of your studio visit.