Compute turnover rate and retention with replacement-cost breakdown. Price a 20% churn problem correctly — free, local, no signup.
Compute conversion rate from visitors and conversions with presets, history, and CSV export. Turn 2% into 3% deliberately — free, local, no signup.
Compute cost per mille for ad campaigns — compare display, video, and social CPMs. Judge a $12 CPM against returns — free, local, no signup.
Compute return on ad spend from revenue and cost — know every dollar's payback. Prove 4:1 ROAS before scaling — free, local, no signup.
Add sales tax to prices instantly by rate — checkout totals, quotes, and receipts. Price a $49 item at 8% correctly — free, local, no signup.
Compute gross margin from revenue and costs — know exact profitability. A $30 sale at $20 cost margins 33% — free, local, no signup.
Departures ÷ average headcount for the headcounts you enter — no annualization and no period input. Status reads Healthy (10% or less), Moderate (10–20%), High (above 20%). Replacement cost splits 40% recruiting, 25% training, 35% lost productivity on a 15–200% of-salary slider (default 75%).
50–200% of annual salary per departure (hiring, ramp, lost output). Ten engineers at 20% churn costs millions yearly.
Under 10% excellent, 10–15% normal, over 20% investigate causes (comp, management, workload). Exit interviews reveal drivers.
No — math runs locally in your browser. Data never leaves your device.
Last updated October 2026