Work it out.
Calculators
Break-even on ticket sales
Erhvervsøkonomi (nulpunkt)
Contribution margin and margin ratio
Erhvervsøkonomi (DB)
Budget variance
Procentregning
Occupant numbers by area factor
Vejledende arealfaktor (planlægning); persontal jf. BR18 kap. 5 (brand)
Escape route width based on occupancy
BR18 kap. 5 (flugtvejsbredde – bygningsreglementets vejledning)
Toilet provision for an event
Kommunal arrangementsvejledning (fx Københavns/Frederiksberg Kommune)
Security staffing levels for an event
Sikkerhedsplan-vejledning (politiets rammer + vagtbranchens praksis)
Beer kegs and drinks requirements
Branchepraksis (fadøls-/eventleverandører)
Current requirement for three-phase/single-phase power
Elektroteknik (P = U × I × √3)
Generator diesel consumption
Generator-datablade (dieselforbrug pr. kWh)
Tent area per guest
Branchestandard (teltudlejere)
Catering quantity for a buffet
Cateringbranche tommelfingerregel
VAT on ticket revenue
Momsloven (25 % moms)
ROI on sponsorship
Erhvervsøkonomi (ROI)
Sound pressure at distance
Akustik (afstandsloven, −6 dB pr. fordobling)
Sign size from reading distance
ISO 3864-1 (skiltestørrelse ift. læseafstand)
Tools that work in all subjects
Whatever your programme is called, these tools calculate the same — Pythagoras, area, percentages and units are not tied to one trade.
- Pythagorasa² + b² = c²Find the missing side, set out a right angle, check whether a room is square, and find the space diagonal.
- Area and perimeterm²Rectangle, triangle, trapezium, circle and composite shapes — area and perimeter.
- Volume and surface aream³ · lBox, cylinder, cone, sphere, pyramid, prism, pipe and frustum — also in litres.
- Percent%Percentage of, how many per cent, percentage change, discount and VAT.
- Scale and ratios1 : 50From drawing to reality, area and volume to scale, the rule of three and dividing in a ratio.
- Unit convertermm ↔ mFrom mm to km, Pa to bar and kB to GB — with the unit staircase.
- Time calculations and the clockt : minTime between two clock times, add time, and 1.75 h = 1 h 45 min for the timesheet.
- Slope and fall% · ° · 1:xFall from level to level, in per cent, per mille, degrees and mm per metre — and the height difference.
- Material consumption including wastem² + %Boards, paint, battens at c/c spacing and packs — for a composite surface or a whole room, with waste.