Measures return on investment by comparing net gain or loss against the original cost, expressed as both a percentage and a dollar amount. Essential for marketing campaign evaluation, equipment purchase decisions, real estate investment analysis, and comparing investment opportunities. Figures never leave your device — every calculation runs locally in your browser.
Content reviewed October 2026 · About Toolzum
Determines the exact unit volume or revenue required to cover fixed and variable costs, with presets for common business types. Essential for startup pricing strategy, product launch planning, and manufacturing cost analysis where knowing your break-even point is critical before committing to production.
Compare buy net cost against rent total over a timeframe you set, from home price, down payment, mortgage rate, and monthly rent. Figures never leave your device — every calculation runs locally in your browser.
Prices from cost and a target margin percentage — the tool solves for selling price, profit, and markup. Perfect for retail pricing, wholesale negotiations, and e-commerce listings where you work backwards from a target margin.
Compute return on ad spend from revenue and cost — know every dollar's payback. Prove 4:1 ROAS before scaling — free, local, no signup.
Divides total sales-and-marketing spend by the number of new customers acquired in the same period to produce a blended acquisition cost. Startups and growth teams use CAC to evaluate marketing channel efficiency, optimize ad spend, and benchmark against LTV.
ROI = (gain − cost) ÷ cost. Example: $12,000 revenue on $10,000 ad spend → ($12,000−$10,000)÷$10,000 = 20%. Simple, but time-blind — see annualization below.
The tool shows simple ROI only — it has no time input. To annualize manually: 20% in 3 months (≈107% annualized) beats 20% in 2 years (≈9.5% annualized). Annualized ROI = (1+ROI)^(1/years) − 1. Always attach a horizon or comparisons lie.
ROAS = revenue ÷ spend ($12k÷$10k = 1.2×) ignores costs beyond ads; ROI subtracts full cost; profit is the dollars. A 300% ROAS campaign can still lose money after product and overhead costs.
Risk, timing, and intangibles: a 50% ROI bet that can go to zero differs from a 15% certain return. ROI also ignores brand, learning, and customer-lifetime effects — pair it with payback period.
No. All calculations run locally in your browser. No figures leave your device.
CAGR Calculator
Calculate the Compound Annual Growth Rate (CAGR) for investments. Shows year-by-year growth breakdown. Figures never leave your device — every calculation runs locally in your browser.
Break-Even Calculator
Determines the exact unit volume or revenue required to cover fixed and variable costs, with presets for common business types. Essential for startup pricing strategy, product launch planning, and manufacturing cost analysis where knowing your break-even point is critical before committing to production.