5 free tools
Tech & IT calculators
Uptime, storage, cloud and project numbers for people who build software. Each tool shows the formula, worked examples and sources.
Tech & ITAI API Cost CalculatorEstimate monthly cost of an LLM API from requests, input and output tokens and price per million tokens.Tech & ITBackup Storage CalculatorStorage needed for full + incremental backups with your change rate, retention and compression.Tech & ITDownload Time CalculatorHow long a file takes to download or upload at a given internet speed.Tech & ITPERT Estimate CalculatorThree-point (optimistic, most likely, pessimistic) estimates with expected duration and confidence range.Tech & ITUptime & SLA Downtime CalculatorAllowed downtime per day, week, month and year for 99.9%, 99.99% or any SLA.