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App Store Apps > Utilities > Haverly's PetroCalc
Haverly's PetroCalc icon

Haverly's PetroCalc

by Haverly Systems, Inc. · Utilities · Free
On the App Store since June 2016 · Data updated 2026-10-15
App Store

Haverly's PetroCalc is made and published by Haverly Systems, Inc. AppBrain is an independent app data site and isn't affiliated with Haverly Systems, Inc. The app name, icon, screenshots and description belong to Haverly Systems, Inc. and are shown as published on the App Store.

AppBrain's verdict

Established
Rating on App Store
4.67
3 ratings
Last updated
May 2, 2026
Size
53.8 MB

It doesn't have enough ratings yet to judge what users think.

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Ratings and reviews on the App Store

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Store listing

By Haverly Systems, Inc., from the App Store
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Screenshots by Haverly Systems, Inc., from the the App Store listing
Description by Haverly Systems, Inc. Written by the developer, not by AppBrain. Click to read.
PETROCALC – THE TRUSTED PETROLEUM CALCULATOR IN YOUR POCKET

PetroCalc is the all‑in‑one oil & gas calculator that engineers, technicians, and students rely on for fast, accurate viscosity calculations, crude‑oil blending, and every other petroleum‑property task. Whether you need an oil calculator for the field, a crude‑oil calculator for the lab, or a classroom reference, PetroCalc streamlines every petroleum calculation—from viscosity blending to heating‑value look‑ups—completely offline.

KEY FEATURES
• Unit Conversion – Instantly switch between energy units (MJ/m³, MBTU/bbl, BTU/gal, kCal), temperature (°F/°C), pressure (psi/bar), oil‑density & gravity (kg/m³, API °, specific gravity), kinematic ↔ dynamic viscosity (cSt ↔ cP) and operational scales (SUS, SFS, Redwood I, Engler °), plus calorific‑value conversions and more with our intuitive oil & gas calculator interface.
• Distillation‑Curve Tools – Convert temperatures between TBP, ASTM D86, D1160, and D2887 scales and perform yield‑temperature interpolation for full distillation‑curve analysis.
• Blending Tools – Execute precise crude‑oil blending and petroleum blending for RVP, Flash Point, Smoke Point, Pour / Cloud / Freeze Point, API Gravity, Aniline Point, Mercaptan Sulfur, Nitrogen, and custom fractions.
• Fuel Property Indices – Compute Cetane Index (ASTM D4737 A/B, D976), Driveability Index, Refractive Index, and additional viscosity calculations.
• Heating Values – Obtain Gross & Net HHV in MJ/m³, MBTU/bbl, BTU/gal, kCal/kg, and more.
• Boiling‑Point Utilities – IBP/EBP plus five average‑boiling‑point methods (Volume, Weight, Molal, Cubic, Mean).
• K‑Factor Calculations – UOP K, Watson K, VRC K, Whole‑Crude K at any temperature.
• Viscosity Prediction – Single‑point, two‑point (Twu), and API 11A4.2 models with built‑in viscosity‑blending conversions.

WHY PETROCALC?
• Developed by Haverly Systems, a leader in petroleum‑process modeling.
• Optimized for petroleum, chemical, and process engineers—and perfect for students in engineering courses who need a dependable petroleum calculator and oil calculator for coursework.
• Works fully offline—no data connection required on‑site.
• Simple, accurate, and fast: the only crude‑oil calculator and petroleum‑blending tool you’ll ever need.

Download PetroCalc today and tackle every oil & gas calculation—from distillation‑curve conversions and viscosity blending to heating values—with confidence.
Official page on the App Store Also on Google Play

Safety and technology

Found in the app by AppBrain
Price
Free
App size
53.8 MB
Content rating
Everyone

Technologies used by Haverly's PetroCalc

Releases

Updates seen on the App Store
Version
2.1.1
Launched
June 2016

No changelog data

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About the app and developer

About Haverly's PetroCalc

Haverly's PetroCalc is an utilities app developed by Haverly Systems, Inc.

User Ratings

Haverly's PetroCalc is rated 4.67 out of 5 stars. The rating is based on 3 ratings.

App Information

Haverly's PetroCalc is freely available from the App Store. The app size is 53.81 MB. The latest version available is 2.1.1. The last update was on May 2, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on the App Store since June 2016.

Developer information for Haverly Systems, Inc.

Haverly Systems, Inc.

Address:

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