# BlasToolsPro

> Comprehensive calculator and converter for blast engineering and unit conversions. (iPhone/iPad app by Pavel Popov Consulting Inc..)

- Source: https://appshunter.io/ios/app/blastoolspro/id515747232 (this page in markdown: same URL + `.md`)
- Developer: [Pavel Popov Consulting Inc.](https://appshunter.io/developer/515747235)
- Category: Business, Reference
- Price: $21.99
- Rating: 4.00/5 from 4 App Store ratings
- Age rating: 4+
- Requires: iOS 12.0 · 8 MB
- Languages: American English
- Released: 2012-04-07
- Data updated: 2026-08-02
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/blastoolspro/id515747232/reviews.md

## What is BlasToolsPro?

BlasToolPro is a calculator/converter with more than 100 formulas to provide solutions for such topics as
1.  Blast Pattern Design
1.1. Bench Height
1.2. Hole Diameter
1.3. Burden
1.4. Spacing
1.5. Sub-Drill Depth
1.6. Top Stemming
1.7. Deck Stemming
1.8. Base Charge Length 

2. Delay Timing
2.1. Hole-to-Hole delays
2.2. Row-to-Row delays
2.3. Avoid supersonic face velocity
2.4. Estimating vibration frequency
2.5. Delay scatter
2.6. Out-of-sequence probability
2.7. Probability of close firing

3. Volume, Weight and Powder Factors
3.1. Volume of Rock per blast hole
3.2. Weight of Rock per blast-hole
3.3. Weight of Explosives per blast-hole
3.4. Loading Density
3.5. Powder Factor

4. Working with Angled Holes
4.1. Hole 'Look-out' distance
4.2. Required hole angle
4.3. Required hole length
4.4. Burden - two angled holes
4.5. Stemming - two angled holes
4.6. Collar distance - two angled holes

5. Pre-split Design
5.1. Pre-split spacing
5.2. Pre-split charge load
5.3. Pre-split stemming height
5.4. Pre-split hole diameter
5.5. Pre-split explosive diameter

6. Decoupled Charges
6.1. Coupling Ratio
6.2. Dropped explosive cartridge diameter
6.3. Decoupled Charge Effective Density

7. Wet Hole Formulas
7.1. No. of Cartridges to clear Water
7.2. Final Height of Water in Wet Hole

8. Abney Levels and Clinometers
8.1. Calculate Bench Height
8.2. Calculate Toe Burden
8.3. Face Angle

9. Scaled Distance and Blast Vibration
9.1. Actual Scaled Distance
9.2. Max Charge Weight
9.3. Minimum Distance
9.4. Predicting Vibration
9.5. Site specific k factor
9.6. Site specific b exponent
9.7. Distance from seismic data
9.8. Acceleration from PPV
9.9. Displacement from PPV
9.10. Explosive Quantity from PPV
9.11. K Factor Converting
9.12. Estimated p-wave velocity

10. Flyrock
10.1. Average Muckpile Displacement
10.2. Extreme Flyrock
10.3. Burden Velocity and Throw
10.4. Burden Based on Throw
10.5. Scaled Burial Depth
10.6. Stem Length and Collar Flyrock Potential

11. Detonation and Blast-hole pressure

12. Fragmentation Calculations
12.1. Rock Factor
12.2. Uniformity Index
12.3. Important Particle Size
12.4. Convert D50% to Dxx%

12. Weight and Bulk Strength
12.1. Absolute Bulk Strength
12.2. Absolute Weight Strength
12.3. Relative Bulk Strength
12.4. Relative Weight Strength
12.5. Equivalent Weight of Explosive

13. Overpressure Prediction

14. GPS Data Manipulation
14.1. Latitude/Longitude to Distance
14.2. Distance from UTM coordinates
14.3. Distance from State plane coordinates
14.4. Latitude/Longitude to UTM
14.5. UTM to Latitude/Longitude

Supported Conversion Types:
1. Length - meters, kilometers, millimeters, centimeters, micrometers, thou, inches, feet, yard, miles
2. Weight - kilograms, grams, milligrams, tonne, grain, ounces, pounds, ton, imperial ton
3. Velocity - m/s, mm/s, km/s, in/s, ft/s, ft/min, ft/hr, mph, fu/fo
4. Area - m², mm², cm², km², hectare, in², ft², yd², acre, miles²
5. Pressure/Sound - Pa, kPa, MPa, GPa, psi, kpsi, bar, kbar, atm, dB
6. Volume - m³, mm³, cm³, liter, in³, ft³, yd³, gal
7. Time - second, millisecond, minute, hour, day, week, month, year
8. Density - kg/m³, t/m³, g/cm³, lb/ft³, lb/yd³, lb/gal, T/yd³, T/ft³
9. Powder Factor - kg/m³, g/m³, lb/yd³, kg/t, g/t, lb/ton, t/g, t/kg, ton/lb
10. Linear Charge Weight - g/m, mg/m, kg/m, grain/ft, lb/ft
11. Energy Density - J/m³, J/cm³, kJ/m³, MJ/m³, cal/ft³, cal/cm³, kcal/ft³, kcal/cm³, Mcal/ft³, Mcal/cm³
12. Specific Energy - J/kg, J/g, kJ/kg, MJ/kg, cal/g, cal/lb, kcal/lb, Mcal/lb, kcal/ton, Mcal/ton
13. Power - watt, kilwatt, horsepower
14. Temperature - celsius, fahrenheit, kelvin

All formulas support metric and imperial systems.

Detailed explanation is provided for each formula.
All entered values are saved for subsequent use and re-use in different formulas.

## Key features

- Blast pattern design formulas
- Delay timing calculations
- Volume, weight, and powder factor calculations
- Angled hole analysis
- Pre-split design tools
- Decoupled charge calculations
- Wet hole and vibration prediction
- Extensive unit conversions

## Chart rankings

- #129 in Top Paid · Business (US App Store)


## Frequently asked questions about BlasToolsPro

### What is BlasToolsPro used for?

BlasToolsPro is a specialized calculator and converter application. It offers over 100 formulas for blast pattern design, delay timing, volume and weight calculations, vibration prediction, and more. It also includes extensive unit conversion capabilities for various measurements.

### What kind of formulas are included in BlasToolsPro?

BlasToolsPro includes formulas for blast pattern design (e.g., bench height, burden, stemming), delay timing (e.g., hole-to-hole delays, vibration frequency), volume/weight/powder factors, angled holes, pre-split design, decoupled charges, wet hole calculations, and scaled distance/blast vibration prediction.

### What unit conversions does BlasToolsPro support?

BlasToolsPro supports conversions for Length (meters, feet, miles, etc.), Weight (kilograms, pounds, tons, etc.), Velocity (m/s, mph, ft/s, etc.), Area (m², ft², acres, etc.), Pressure/Sound (Pa, psi, bar, dB, etc.), and Volume. It also handles GPS data manipulation.

### Is BlasToolsPro available on Android devices?

Yes, BlasToolsPro is available for supported devices including iPhone, iPad, and iPod. The application is designed for iOS platforms.

### How often is BlasToolsPro updated?

The latest version of BlasToolsPro is 1.5.6, and it was last updated on June 21, 2024. This indicates a relatively active development cycle for the application.

### What is the price of BlasToolsPro?

BlasToolsPro is a paid application, priced at $21.99. This one-time purchase grants access to all its features and formulas.

### What is the age rating for BlasToolsPro?

BlasToolsPro has an age rating of 4+. This suggests that the content is generally suitable for all ages, with no mature themes or potentially objectionable material.

### Does BlasToolsPro have ads?

No, BlasToolsPro does not contain advertisements. As a paid application, it offers an ad-free experience for its users.

## Version history (last 5 releases)

### 1.5.6 — 2024-06-21

Compatibility with latest iOS releases

### 1.5.5 — 2021-03-24

- Disclaimer "I Agree" button was moved from navigation bar after disclaimer test

### 1.5.4 — 2020-11-15

Compliant with latest iOS release

### 1.5.2 — 2017-10-08

- Is now compliant with iOS11

### 1.5 — 2017-02-14

The application is now compatible with latest iOS release

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-02.*