EIM Calculator
Quick Calculations · Accurate Results · Every Day
An all-in-one calculation suite for asset integrity, engineering and cost work — built for oil & gas professionals to save time, eliminate manual errors and improve productivity.
A calculator for every integrity decision
Industry-standard formulas across the disciplines you work in every day — from corrosion rates to cost estimation.
Corrosion
Corrosion rate, remaining life, metal loss trending.
Thickness
Retirement thickness, MAWP, minimum required thickness.
PSV & Relief
PSV sizing, relieving capacity, back-pressure checks.
Bolting & Torque
Bolt torque, gasket stress, flange load.
Tank
Tank capacity, shell thickness, roof loading.
Heat Exchanger
TEMA calcs, pressure drop, overall U-value.
Pipeline
Pressure drop, line sizing, flow velocity.
Cost Estimation
Project cost, material cost, manpower cost.
Real calculators. Real formulas.
These three run on the same industry-standard equations the full suite uses. Change any input and watch the result update instantly.
Inputs — API 510 / 570 / 653
Remaining life = (t_curr − t_min) / CR
Inputs — Vertical Cylindrical AST
1 m³ = 6.2898 bbl = 1000 L
Inputs — ASME B31.3 Internal Pressure
E = 1.0 (seamless), Y = 0.4
⚡ Demonstration tool. Results are indicative and must be verified against the governing code edition and engineering judgement before use in any integrity decision.
From input to report in five steps
Visit
Open EIM Calculator and explore the categorised library.
Choose
Select the calculator you need from the list.
Enter Inputs
Type your values into the simple, labelled fields.
Get Results
Instant, accurate output with formulas and units shown.
Download / Save
Export, print or save your calculation as PDF or Excel.
Built to be trusted on the job
Industry-Standard Formulas
Backed by recognised code references and engineering practice.
User-Friendly Interface
Clean, labelled inputs that make sense to engineers, not coders.
Mobile & Desktop
Works on the laptop in the office and the phone in the field.
Reports Download
Export results to PDF or Excel for records and packages.
Regular Updates
New calculators added continuously as the library grows.
Secure & Reliable
A stable platform you can depend on day to day.
24/7 Access
Anywhere, anytime — onshore, offshore or on the move.
Validated Library
Every calculator is checked against standards & experts.
Expert-Led
Curated by integrity engineers with decades on the tools.
Simple, honest pricing
Start with a full 7-day free trial. No commitment — explore every calculator before you decide.
Free Trial
Full access to every calculator for one week. No card needed to look around.
Start Free TrialPremium Plan
Billed yearly — $120 / year
- Unlimited access to all calculators
- Download & save results (PDF / Excel)
- Regular updates with new calculators
- Priority support