What browsers are supported?

Chrome 90+, Firefox 88+, Safari 14+, Edge 90+. Older browsers may lack some Web Crypto APIs needed for hashing/encoding tools. ~98% of dev users are on supported versions.

What’s the maximum input size?

Browser-dependent: ~10-100MB safely. Beyond that, you’ll see UI freezes or out-of-memory errors. For production-scale data, use a CLI tool with streaming.

What’s the difference between this and Postman / Insomnia?

Postman / Insomnia are full-featured API clients with collections, environments, scripting. This is a focused single-task tool. Use this for quick standalone work; Postman / Insomnia for sustained API development workflows.

Does my data leave my browser?

No — everything runs in your browser’s JavaScript engine. The page makes no network calls with your input data. View Network tab in DevTools to verify.

Does it work offline?

Yes once the page is loaded. The tool runs entirely client-side; refresh while online to update, but offline use works for cached pages.

Does this handle unicode correctly?

Yes. JavaScript strings are UTF-16 internally; modern browsers handle multi-byte characters, emoji, surrogate pairs correctly. Edge cases: graphemes vs codepoints (the ‘family’ emoji is multiple codepoints), normalization forms (NFC vs NFD).

Gaming · Free tool

eDPI Calculator

Calculate effective DPI with tier labels and cm/360 reference online. Compare against pro player averages instantly — free tool with no sign-up.

Updated June 2026

In-game sensitivityMouse DPI

eDPI

800

Tier

High (800–1600)

cm/360 @ CS2 yaw

52.0 cm

Pro player eDPI averages

CS2 / CS:GO	~800
Valorant	~280
Apex Legends	~1600
Overwatch 2	~4000
Fortnite	~50 (different scale)

eDPI (effective DPI) = in-game sens × mouse DPI. It’s the single number that normalizes settings across setups — useful when comparing to pros or teammates.

Found this useful?Email Buy Me a Coffee

What it does

Effective DPI calculator with tier labels and cm/360 reference. Compare against pro player averages. The best dev utility is the one that runs in a browser tab without setup, install, or login.

What this means for typical workflows: version-locked utilities prevent regressions. CLI tools update over time and behavior shifts; webpage tools tend to maintain stable behavior because users notice changes immediately.

What works and what doesn’t: audit-bound contexts (SOC 2, HIPAA, PCI) generally require versioned, auditable processing — webpage transforms aren’t logged. A common pitfall: version-specific behavior (Node 20 vs 22, Python 3.10 vs 3.12).

Embed this tool on your siteShow snippet

Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.

<iframe src="https://freetoolarena.com/embed/edpi-calculator" width="100%" height="720" frameborder="0" loading="lazy" title="eDPI Calculator" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>

Embed docs →

How to use it

Enter your inputs (the values relevant to edpi calculator).
Pick the relevant options or scenarios.
Read the calculated outputs — primary number plus context.
Adjust inputs to test different scenarios side by side.
Cross-check critical numbers against authoritative sources before relying on the result.

When to use this tool

Verifying output of automated pipelines before deploy.
Onboarding teammates who lack the local tooling.
Sensitive transformations where data shouldn’t hit a third-party server.
Quick one-off transformations that don’t justify a CLI install.

When not to use it

When the operation must be reproducible 5 years from now (web services churn).
Bulk transformations across thousands of files (use a CLI batch tool).
Performance-critical hot paths where browser overhead matters.
When the data is too large to fit in browser memory.

Common use cases

Onboarding a colleague who needs the same calculation/conversion
Verifying a number or output before passing it on
Quick calculation during a typical workday
Pre-decision sanity-check on inputs and outputs

Frequently asked questions

What browsers are supported?: Chrome 90+, Firefox 88+, Safari 14+, Edge 90+. Older browsers may lack some Web Crypto APIs needed for hashing/encoding tools. ~98% of dev users are on supported versions.
What’s the maximum input size?: Browser-dependent: ~10-100MB safely. Beyond that, you’ll see UI freezes or out-of-memory errors. For production-scale data, use a CLI tool with streaming.
What’s the difference between this and Postman / Insomnia?: Postman / Insomnia are full-featured API clients with collections, environments, scripting. This is a focused single-task tool. Use this for quick standalone work; Postman / Insomnia for sustained API development workflows.
Does my data leave my browser?: No — everything runs in your browser’s JavaScript engine. The page makes no network calls with your input data. View Network tab in DevTools to verify.
Does it work offline?: Yes once the page is loaded. The tool runs entirely client-side; refresh while online to update, but offline use works for cached pages.
Does this handle unicode correctly?: Yes. JavaScript strings are UTF-16 internally; modern browsers handle multi-byte characters, emoji, surrogate pairs correctly. Edge cases: graphemes vs codepoints (the ‘family’ emoji is multiple codepoints), normalization forms (NFC vs NFD).

Learn more

Explore more gaming tools

100% in-browserNo downloadsNo sign-upMalware-freeHow we keep this safe →