Work it out.
14 calculators, gathered in a single workflow: find the requirement, dimension it, and verify. Enter your own values — the result updates live.
Need a cutting pattern or development template? Go to Templates.
What do you want to find out?
DirectoryChoose question
- § 06Which DS 452 class must my installation comply with?
- § 04How thick must the insulation be to hit a specific class?
- § 01How much heat does the pipe lose per metre — and what does it cost per year?
- § 05Which class does the thickness I already have meet?
- § 03Is the surface sweating — is there a risk of condensation on a cold pipe?
- § 02What is the U-value for a duct or tank wall with several layers?
- § 07How many m² of insulation and jacketing should I order for the job?
- § 08How many m³ of insulation do I need for a square duct?
- § 09How much less may the pipe lose if I tighten the DS 452 class?
- § 10How much does the temperature drop from start to end of the pipe section?
- § 11How much does the insulation save — and how quickly is the investment paid back?
- § 12How long before the water in the pipe freezes in frost weather?
- § 13How hot is the tank after X hours — and when does it reach the required temperature?
- § VCan I be taken through the entire insulation specification at once?
Step V — Directory
Be guided through the entire work process all at once — from pipe to finished spec.
Step A — Find requirement
Start here: which DS 452 class must the installation meet?
Step B — Size it
How thick should the insulation be — and what does the pipe lose?
Step C — Check
Check an existing installation: achieved class and condensation risk.
Energy class
Which class does your installation reach?
Dew point
Is there a risk of condensation?
Heat loss class comparison
What do I save by going from class X to Y?
Temperature drop in pipe with flow
How hot is the medium when it reaches?
Energy savings & reimbursement
What does the insulation save — and when is it paid back?
Freezing time for water-filled pipe
Hours before 0 °C — and before ice
Step D — Surfaces & tanks
U-value for layered, flat constructions.
Insulation tools
Sheet, duct and pipe: unfold into cutting patterns, build the pipe route in 3D, and unfold a whole box.
- The Unfolding Library45 shapesSheet metal shapes unfolded into cutting patterns, in millimetres and with an honest quality mark.
- Pipe route builder — 3DPipes in 3DChain pipe segments into a complete pipe map — with seams, overlaps and material totals.
- 3D-workshop3D · DXFThe shapes in space — with flat development, DXF for CNC laser and a cardboard guide.
Tools that work in all subjects
Maths and templates that work in every trade — and at school. Every tool shows the formula and the working with your own numbers.
- 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.