📣 Free Online Marketing Tools
Free online marketing calculators — CPM, CPC, CTR, ROAS, conversion rate, and CPA. Instantly measure ad performance and campaign ROI in your browser.
6 tools available · 100% free · No signup required
CPM Calculator
CPM Calculator finds cost per thousand impressions online for free. Enter any two of cost, impressions, or CPM and instantly solve for the third.
CPC Calculator
CPC Calculator finds your cost per click online for free. Enter total cost and clicks to instantly get average cost per click, or solve for cost or clicks.
CTR Calculator
CTR Calculator finds your click-through rate online for free. Enter clicks and impressions to instantly get CTR as a percentage using clicks ÷ impressions × 100.
ROAS Calculator
ROAS Calculator finds your return on ad spend online for free. Enter revenue and ad spend to instantly get ROAS as a ratio and percentage.
Conversion Rate Calculator
Conversion Rate Calculator finds your conversion rate online for free. Enter conversions and visitors to instantly get the rate as a percentage.
CPA Calculator
CPA Calculator finds your cost per acquisition online for free. Enter total cost and conversions to instantly get cost per acquisition using cost ÷ conversions.
Every advertising decision comes down to a handful of numbers: what you pay to reach people, what you pay when they click, how often they click, how many convert, and what you earn back. These marketing calculators turn those raw figures into the standard metrics agencies and in-house teams report on every day — CPM, CPC, CTR, conversion rate, CPA, and ROAS — so you can compare channels, set bids, and justify spend without wrestling with a spreadsheet. Each one runs entirely in your browser, updates as you type, and keeps your campaign numbers private on your own device.
Measure and compare ad performance
CPM (cost per thousand impressions) and CPC (cost per click) tell you what reach and traffic are costing you, while CTR (click-through rate) shows how compelling your creative is. Feed in the spend, impressions, clicks, or conversions you already have from Google Ads, Meta, or any platform, and each calculator returns the metric instantly — most also let you solve for a missing variable, so you can work backwards from a target CPA or a budget you're willing to commit.
Prove ROI before and after a campaign
ROAS (return on ad spend) and conversion rate are the metrics that decide whether a campaign continues. Use them to model a scenario before you launch — what conversion rate you'd need to hit a profitable ROAS — and to report results afterwards. Because the math is transparent and the tools are free with no signup, they're handy for quick client updates, media plans, and sanity-checking a platform's own dashboard. Treat the outputs as accurate arithmetic on the inputs you provide; real campaign profitability also depends on margins and lifetime value.