# EngCalc

> EngCalc is a browser-based calculator pack for mechanical and aerospace engineers covering tolerance stack-ups, fits, unit conversions and material properties.

- Website: https://engcalc.launchmatic.net/
- Status: in development (waitlist open, no public release yet)
- For: mechanical & aerospace engineers
- Price: $5 /month (founding price); optional one-time $5 refundable deposit reserves a founding spot
- Alternative to: MITCalc. MITCalc's full calculation package is €89 for a one-year subscription or €299 perpetual. EngCalc is planned at $5/month in the browser with no install. Source: https://mitcalc.com/en/pricelist.htm (checked Oct 18, 2026)
- Built by: Launchmatic (https://launchmatic.net/)
- Contact: hello@launchmatic.net

## What it does

- **Tolerance stack-ups:** Worst-case and RSS stack-ups with a clear contribution breakdown for each dimension.
- **Materials & fits:** Look up common alloy properties and ISO fit tolerances without digging through handbooks.
- **Units that never slip:** Unit-aware inputs everywhere, so mixing inches, millimeters, psi, and MPa just works.

## Planned plan

- All calculators, unlimited use
- Saved calcs and PDF export
- Works in any browser, no install
- Cancel anytime

## FAQ

### Can I use the results for certified work?

EngCalc is a productivity aid. Always verify safety-critical results against your company's standards and approved references.

### Do I need to install anything?

No. It runs in your browser on Windows, Mac, or Linux.

### When does it launch?

We're building it now. Waitlist members get first access and the founding price.

## Links

- [Landing page](https://engcalc.launchmatic.net/)
- [Pricing](https://engcalc.launchmatic.net/#pricing)
- [Launchmatic](https://launchmatic.net/)