Work it out.
Calculators
Energy content of a meal
Atwater-faktorer (EU)
BMI (Body Mass Index)
WHO BMI-klassifikation
Maintenance fluid requirements in children
Holliday-Segar (1957)
Minimum staffing: number of staff
Lov om minimumsnormeringer
Impact surfacing: required layer thickness
DS/EN 1177 (faldunderlags-tykkelse)
Safety zone around play equipment
DS/EN 1176-1 (sikkerhedszoner)
Choking hazard: small parts test (cylinder)
DS/EN 71-1 (smådelscylinder)
Sleep requirements by age
Sundhedsstyrelsens søvnanbefalinger
Screen time budget for the child
Sundhedsstyrelsens anbefalinger om skærmbrug (2024)
Vitamin D drops: number of drops per day
Sundhedsstyrelsen: D-vitamin-anbefaling (10 µg/dag, 0-4 år)
Movement budget for the day
Sundhedsstyrelsens anbefalinger om fysisk aktivitet (5-17 år)
Floor area requirements in group rooms
The Building Regulations (BR18)
Outdoor space per child
Kommunal vejledende norm (fx Aarhus Kommune)
Fruit & vegetables for the group
Fødevarestyrelsens kostråd (4-10 år)
Fuse beads: consumption per pegboard
Geometri · Producentdata (Hama/Panduro)
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.