Free Calculators
Interactive tools for planning and pricing your software stack. Every calculator runs entirely in your browser — instant results, no signup, and nothing you type is sent to us.
AI Writing Tool Cost Calculator
See what Jasper, Writesonic, Copy.ai, and Rytr actually cost for your team size and usage level, using their real published pricing tiers.
Open calculatorSaaS Subscription Cost Calculator
Add up every tool in your stack and see the monthly, annual, and 3-year total — plus what annual billing would save you.
Open calculatorEmail Marketing ROI Calculator
Turn your list size, open rate, click-through rate, and conversion rate into monthly revenue, ROI, and revenue per subscriber.
Open calculatorPassword Strength Checker
Measure a password's entropy in bits and how long it would take to crack. Computed locally in your browser — nothing is sent anywhere.
Open calculatorNumbers first, then the tools
Picking software is easier once you know the maths. Total up what you already spend, work out what a channel actually returns, and only then go shopping. These calculators handle the first two steps; the rest of the site handles the third.
When you are ready to choose, browse our expert-tested tool reviews, put two options head-to-head, or start from a curated best-of list.