Skip to content

Tools · free to use

Engineering calculators

Quick, standards-based estimates for engineers working on pumps, circulators, heat exchangers, valves, compressors and pressure vessels. No sign-up, nothing leaves your browser.

Pump Energy Index (US DOE)

PEI / CEI per 10 CFR 431 Subpart Y, Appendix A. Enter SI values at 75 %, 100 % (BEP) and 110 % of BEP flow.

Pump MEI (EU 547/2012)

Efficiency, specific speed and the EU C-value for your pump type and Minimum Efficiency Index.

Indicative estimates. These tools implement published standard formulas for quick engineering checks. Verify any regulatory or compliance figure against the governing standard (DOE 10 CFR 431, EU 547/2012, EU 641/2009, IEC 60534, ASME VIII-1) before you rely on it. In AnvilTDM, the same calculations run against your measured test data — with uncertainty, provenance and certified reports.

Start with your own data