Work it out.
Calculators
Print resolution (DPI/PPI)
1 tomme = 2,54 cm
Video file size
Bit/byte-omregning
Proportional scaling
Ratio arithmetic
Raw video storage space
Bit/byte-omregning (ukomprimeret rådata)
Uncompressed image file size
Bit/byte-omregning (rasterbillede-datastørrelse)
Web page load time
Google Core Web Vitals – LCP-tærskler (web.dev)
YouTube upload bitrate
YouTube anbefalede upload-indstillinger (support.google.com)
Typographic scale
Modulær typografisk skala (Tim Brown, 'More Meaningful Typography' — A List Apart)
Print bleed (trim)
Standard beskæringsmargen i dansk trykkeribranche (3 mm)
The golden ratio in layout
Geometri (det gyldne snit, φ≈1,618)
Animation frames and storage
Forholdsregning (billedsekvens: fps × sekunder × filstørrelse)
Uncompressed audio file size (PCM/WAV)
PCM-lyddataformel (samplerate × bitdybde × kanaler)
Retina/HiDPI-asset-skalering
Apple Human Interface Guidelines – @1x/@2x/@3x-skalafaktorer
Readability: characters per line
WCAG 2.1 – Success Criterion 1.4.8 Visual Presentation (w3.org)
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.