Utility Belt — free marketing & productivity tools for everyday work
Utility Belt is a free, browser-based platform of focused web tools for marketers, operators, and analysts. Build UTM links, calculate ROAS and margins, generate QR codes, clean CSVs, and more — without creating an account or installing anything. Start with Marketing. More verticals on the way.
Verticals
1 live · 3 in planningMarketing
LiveUTM builders, ad checkers, calculators, and campaign utilities for marketers.
Finance
Coming soonCalculators and planners for budgets, rates, and ratios.
Developer
Coming soonEncoders, formatters, and small utilities for engineers.
Creator
Coming soonHelpers for content planning, naming, and asset prep.
Tool categories
Tools are grouped by the job they do so you can find the right one without scanning a long list.
Campaign tracking & URLs
Build UTM-tagged links, inspect URL parameters, and standardise campaign names so reporting stays clean across teams and platforms.
Performance calculators
Quick math for return on ad spend, customer acquisition cost, lifetime value, margin, and markup — with reverse calculations when you need them.
Content & creative helpers
Generate QR codes for offline campaigns, clean slugs and filenames for the web, and produce campaign-ready strings on demand.
Data & operations
Clean and de-duplicate CSV audience lists, plan meetings across time zones, and validate ad copy against platform limits before you ship.
About Utility Belt
Utility Belt exists because most "free tool" sites bury a simple calculation behind sign-up walls, pop-ups, and upsells. We build single-purpose tools that load fast, run in your browser where possible, and let you copy the result and move on. Every tool has its own URL, so you can bookmark the exact utility you use most.
The platform currently focuses on Marketing with 10 live tools, and we're actively expanding into Finance, Developer, and Creator verticals. Accounts are optional and only unlock saved runs and favorites — every tool works without signing in. To learn more about the project, how it's built, and the principles behind it, see our About page.
What to expect
Single-purpose
Each tool does one thing well — no dashboards, no upsells.
Free without an account
Sign in only when you want to save runs or favorite tools.
Built for daily use
Fast pages, keyboard-friendly, copy-ready outputs.