About Kouzaitap(Metal Calculator)
【Introduction】 This application calculates the weight(kg) and surface area(m2) of steel used in Japan (JIS Ferrous Materials & Metallurgy). It also provides a calculation of cross-sectional shape and perfor
【Introduction】
This application calculates the weight(kg) and surface area(m2) of steel used in Japan (JIS Ferrous Materials & Metallurgy).
It also provides a calculation of cross-sectional shape and performance.
【Functions】
You can share, memorize, and e-mail calculations with text and CSV files.
You can enter standard of the steel plate.
You will receive advertisements.
【Steels】
●PLATE & SHEET
Hot Rolled Steel Plates
Checkered Steel Plates
Expanded Metals
Steel Decks
Cold-reduced carbon steel sheets
Hot Rolled Stainless Steel Plates
Cold Rolled Stainless Steel Plates
Circular Steel Plates
QL Deck
Super E Deck
●STEEL SECTION & BAR
H Beams
Channels
Equal Leg Angles
Unequal Leg Angles
I Beams
Flat Bars
Round Bars
Square Bars
Unequal Leg and Unequal Thickness Angles
Bulb Flats
T Beams
CT Beams
Fixed Outer Dimensions H Beams
Fixed Outer Dimensions CT Beams
●LIGHT GAUGE STEEL
Light Channel Steel
Light Z Steel
Light Angle Steel
Lip Channel Steel
Lip Z Steel
Hat Steel
Light Gauge H Steels
Light Gauge Lip Type H Steels
鋼製天井下地材(19形)
鋼製天井下地材(25形)
鋼製壁下地材
●STRUCTURAL STEEL TUBE/PIPE SHEET PILE
Carbon Steel Tubes General(STK)
Carbon Steel Square Pipes(STKR)
Carbon Steel Rectangle Pipes(STKR)
Carbon Steel Tubes Building(STKN)
Steel Pipe Piles(SKK)
Steel H Piles(SHK)
U-Shaped Steel Sheet Pile
Steel Bars For Concrete Reinforcement
Carbon Steel Square Pipes Machine(STKMR)
Carbon Steel Tubes Machine(STKM)
建築構造用冷間ﾛｰﾙ成形角形鋼管(BCR)
建築構造用冷間ﾌﾟﾚｽ成形角形鋼管(BCP)
トルシア形高力ボルト
高力六角ボルト
ND core
●STEEL PIPES FOR PIPING
Carbon Steel Pipes Ordinary Piping(SGP)
Arc Welded Carbon Steel Pipes(STPY)
Coated Steel Pipes Water Service(STW)
Carbon Steel Pipes Pressure Service(STPG)
Carbon Steel Pipes High Pressure Service(STS)
Carbon Steel Pipes High Temperature Service(STPT)
Alloy Steel Pipes(STPA)
Steel pipes Low Temperature Service(STPL)
Stainless Steel Pipes(SUS304TP)
Stainless Steel Pipes(SUS316TP)
Large Diameter Welded Stainless Steel Pipes(SUS304TPY)
Large Diameter Welded Stainless Steel Pipes(SUS316TPY)
●SECTIONAL SHAPES
H/I Beams
Channels
Angles
T Beams
Round Hollow Tubes
Rectangular Hollow Section
Round Bars
Rectangular Bars
Hexagonal Bars
●STAINLESS STEEL FOR BUILDING STRUCTURE
Circular Steel Pipes
Square Steel Pipes
Hot-Rolled H Beams
Hot-Rolled Channels
Hot-Rolled Equal Leg Angles
Cold-Rolled Equal Leg Angles
溶接Ｈ形鋼
溶接溝形鋼
Stainless Steel Bars For Concrete Reinforcement
●HOT-FORMED STAINLESS STEEL SECTIONS
H Beams
Channels
Equal Leg Angles
Unequal Leg Angles
Round Bars
Hexagonal Bars
●COLD-FORMED STAINLESS STEEL SECTIONS
Channels
Equal Leg Angles
Unequal Leg Angles
Lip Channels
Hut Channels
Flat Bars
Round Bars
Square Bars
Hexagonal Bars
kg is the basic unit of weight.
A calculation is based on kg/m2 or kg/m.
Please use it as a calculator to get a steel weight.
【 Calculation of steel’s surface area】
You can calculate a surface area of the steel, for example, to get the area of painting.
Please note that “---m2 “appears when a surface area is not calculated.
Previous Versions
Here you can find the changelog of Kouzaitap(Metal Calculator) since it was posted on our website on 2019-09-20 22:17:33.
The latest version is 1.4226 and it was updated on 2026-06-11 11:31:41. See below the changes in each version.
Kouzaitap(Metal Calculator) version 1.4226
Updated At: 2026-06-07
Changes: 1.Bug fixes and performance improvements.
2. Changes to how ads are displayed.
Kouzaitap(Metal Calculator) version 1.4225
Updated At: 2026-04-09
Changes: 1.Bug fixes and performance improvements.
Kouzaitap(Metal Calculator) version 1.4209
Updated At: 2025-09-09
Changes: 1. Fixed a bug that caused the game to crash on some devices.
2. Bug fixes and performance improvements.
Kouzaitap(Metal Calculator) version 1.4205
Updated At: 2025-08-11
Changes: 1. Change the drawing area to View.
2. Introducing a subscription to hide ads.
3. Screen layout bug fixes
4. Bug fixes and performance improvements.
Kouzaitap(Metal Calculator) version 1.4198
Updated At: 2025-07-13
Changes: 1. Introducing a subscription to hide ads.
2. Bug fixes and performance improvements.
Kouzaitap(Metal Calculator) version 1.4153
Updated At: 2025-06-10
Changes: 1. Added an option to hide ads.
2. Bug fixes and performance improvements.
Kouzaitap(Metal Calculator) version 1.4151
Updated At: 2025-05-05
Changes: 1. Updated to support the latest OS.
2. Bug fixes and performance improvements.
Kouzaitap(Metal Calculator) version 1.4133
Updated At: 2023-11-20
Changes: 1.Bug fixes and performance improvements.
2.GDPR message response.
Kouzaitap(Metal Calculator) version 1.4103
Updated At: 2022-04-09
Changes: 1. QL deck and Super E deck added
2. Addition of ND core
3. Other functional improvements
Kouzaitap(Metal Calculator) version 1.4102
Updated At: 2022-03-07
Changes: 1. Length and quantity buttons
Add a paste button with a long tap.
You can paste the numbers on the clipboard.
2. Other functional improvements
Disclaimer
Official Google Play Link
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