Free Online Tools
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Ads & Marketing
UTM Builder
Build tracking URLs for Google Ads & Meta Ads campaigns
Ads
ROAS Calculator
Calculate Return on Ad Spend from revenue and spend
Ads
Breakeven ROAS
Find the minimum ROAS you need to cover product costs
Ads
CPA Calculator
Cost per acquisition from ad spend and conversions
Ads
Ad Budget Calculator
How much to spend to hit your revenue target
Ads
CPM / CPC Calculator
Convert between CPM, CPC, CTR and total cost
Ads
Ad Frequency Calculator
Meta Ads: how many times each user sees your ad
Meta Ads
Ad Copy Counter
Live character counter for Google Ads & Meta Ads copy limits
Ads
LTV Calculator
Customer lifetime value and suggested max CPA
Ads
General Tools
BMI Calculator
Body Mass Index with WHO classification and ideal weight range
Health
QR Code Generator
Generate QR codes for any URL or text, download as PNG
Utility
Currency Converter
Live exchange rates for 10 currencies
Finance
Compound Interest
Investment growth with monthly contributions and chart
Finance
Password Generator
Cryptographically secure passwords via Web Crypto API
Security