How is the firework safety distance calculated?

According to BAM Py/2012/2 guideline, for bombs >= 50 mm caliber: maximum of 80 % of trajectory peak height and 800 × caliber [mm]. For noise-primary bombs the factors increase to 100 % and 1000 × caliber. Rockets need 200 m in launch direction, ground fireworks 20 m.

How does wind affect the safety distance?

At 9-13 m/s wind speed, the distance doubles in the wind direction (±60° sector). Above 13 m/s only ground-level fireworks are permitted, or the distance triples.

Is the calculator free?

Yes, completely free. No registration required. All data stays in the user's browser.

Large-scale fireworks · category F4 · BAM Py/2012/2

Safety distances in seconds — done right.

The browser-based BAM calculator with real live visualisation on a map and abstract schematic mode. Enter caliber, trajectory height, wind, loudness — instant safety zone, noise distance and PDF export.

Start free How it works

No sign-up100 % browserData never leaves your deviceMobile, tablet, desktop

Features

Everything you need as a pyrotechnician

From a quick check on a single bomb to full event planning with obstacles, conflict detection and a behaviour-ready PDF for the authority.

BAM engine

All rules from Py/2012/2 implemented as pure functions, 50 unit tests — nothing approximated. Bombs, noise, rockets, cakes, water bombs.

Live map or schematic

OpenStreetMap with dark theme or abstract top-down view. Click to set the launch site, draw obstacles as polygons.

Noise calculation

Point-source model with 6 dB per doubling. Direct datasheet input (e.g. 130 dB @ 25 m). Pain threshold, residential zone, crew hearing protection.

Wind & angle

±60° wind sector with ×2/×3, four tilt steps 5–20° with +40 % to +80 %, combined into a 360° polygon.

PDF & PNG export

Authority-grade PDF report with effects table, visualisation and disclaimer. For your event registration.

Solo mode

Isolate a single effect — see what your largest bomb requires alone, without the other effects.

Mobile-first

iPhone, iPad, Desktop — all tested. Installable as a Home Screen PWA. Use it on-site at the venue.

Address search

OpenStreetMap geocoding inside the tool: type any address — the launch site sits exactly on the map.

Share scenarios

Save the show as JSON to your own computer. Email it to colleagues, load it on another device — without any cloud account.

Workflow

From idea to safety distance in 4 steps

1
Add effects
Pick a preset (75 mm bomb, 50 mm noise bomb, cake …) or enter your own values.
2
Set environment
Wind, tilt angle, elevated launch site. Type an address or click directly on the map.
3
Inspect visualisation
Live polygon on map or schematic. Draw obstacles — conflicts are highlighted in red.
4
Export
PDF or PNG for your records or the authority's submission.

Pricing

Free.

No registration, no in-app advertising, no hidden costs. We don't keep your show plan, you keep your data.

Start now

Important note

This app is a technical aid and does not provide legally binding statements. It does not replace the review by a person responsible under the Austrian PyroTG 2010 (Pyrotechnikgesetz, §§ 17 ff.) or German §27 SprengG, the licensing procedure of the competent authority, or the original BAM guideline. Responsibility remains with the licensed pyrotechnician.

Concept · Design · Development

Webagentur Hochmeir · webhoch.com

We build software tools like this every day — from concept through development to operation. Web apps, mobile, SaaS, AI automation. Got your own idea?

webhoch.com hello@webhoch.com