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For individual users and small teams
$39/ month
Billed monthly
- 1 user
- One standard family: NFPA, EN or SNiP
- PDF reports and project archive
- Email support

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Run smoke control, NFPA 2001 integrity and ATEX zone classification calculations on one platform. Fast, traceable, report-ready results with smoke control calculations based on NFPA, EN and SNiP, NFPA 2001 Annex D and EN 60079-10-1.
LBsoftECalc brings the calculations fire safety engineers need most into a single web platform. Using NFPA, EN and SNiP methods, it calculates smoke exhaust rates, clear height, layer temperature and fan/vent sizes from design fire, plume type and geometry inputs; practical design tools, NFPA 2001 Annex D integrity testing and EN 60079-10-1 ATEX zone classification run in the same project. Results are stored per project and exported as PDF reports.
NFPA 92, EN (CEN/TR 12101-5, EN 12101-13) and SNiP (SP 7.13130 / Posobie 4.91) smoke control methods
Practical design tools such as t² design fire, BS 9999 and VDI 6019
Integrity (door fan) test and hold time calculation per NFPA 2001 Annex D
ATEX zone classification calculations to EN 60079-10-1
Calculates smoke exhaust rates and clear height for axisymmetric, balcony spill, adjacent spill and window plumes in seconds.
Checks layer temperature, minimum reservoir depth, vent size and plugholing in one flow.
Calculates airflow and pressure differential for escape stairs using the 9 EN 12101-13 system arrangements and the BS 5588-4 method.
Performs the integrity (door fan) test and hold time calculation for gaseous suppression enclosures per NFPA 2001 Annex D.
Includes t² design fire, BS 9999 and VDI 6019 tools; stores every calculation per project and exports it as a PDF report.
Performs and reports ATEX zone classification calculations to EN 60079-10-1 for areas where explosive gas atmospheres may form.
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Choose the plan that fits your needs and get started with a monthly, annual or lifetime licence. Annual plans include two months free.
For individual users and small teams
$39/ month
Billed monthly
For growing teams and professional use
$129/ month
Billed monthly
For organizations and custom integrations
from$299/ month
Billed monthly
If you would rather pay only for the calculations you need instead of subscribing, you can buy a one-time credit pack in the LbsoftECalc app. Each calculation uses 1 credit (EN 12101-13 modules use 5).
Prices are in US dollars and exclude VAT. Prices for all products