現場電卓｜大工・外構・DIYの勾配・アール計算

GENBA TOOLBOX

About this app

Faster and easier calculations needed on-site.

"On-site Calculator" is a practical calculation app that compiles calculations used by carpenters, landscapers, civil engineers, construction workers, carport builders, and DIYers.

It allows you to quickly check calculations that previously required repeated use of a calculator on-site, such as slope calculations, radius calculations, dimension calculations, and concrete slab quantity calculations, simply by inputting numbers.

【Recommended for:】

・Landscaping workers who want to quickly check slopes and elevation differences on-site

・Carpenters who calculate roofs, stairs, and slope distances

・Civil engineers and construction workers who check quantities and dimensions

・Construction managers who want to calculate the height difference of carport columns

・DIY users who want to check materials and construction dimensions themselves

・Those looking for a DIY calculator more suited to on-site use than a general calculator

【Main Calculation Tools】

■ Slope/Carport Calculation

You can check slope distance, angle, slope, and fractional notation from horizontal and vertical dimensions.

In carport mode, the column height difference is calculated from the column spacing and roof slope. This software streamlines on-site slope calculations and height checks performed by exterior construction workers.

It can be used for slope calculations for roofs, ramps, exterior structures, and civil engineering works.

■ R/Round/Circle Calculation

Calculates actual radius, deemed radius, central angle, and reference circumference from chord length and saddle height.


By entering the diameter, you can also check the circumference, radius, and area. You can immediately perform radius calculations necessary for formwork, exterior construction, landscaping, and building construction.

You can check complex radius calculations and circle dimension calculations without using a scientific calculator.

■ Concrete Slab Quantity Calculation

You can check the estimated amount of concrete needed from the construction area and thickness.

It summarizes the area, volume, and quantity confirmation of concrete slabs, supporting material planning for exterior construction and DIY projects.

It is also convenient for rough estimates before ordering concrete slabs and for recalculations when the construction area is changed.


■ Rebar Quantity Calculation
Based on construction dimensions and pitch, you can calculate an estimate of the required number of rebars.

This assists with rebar quantity calculations in civil engineering, foundations, and concrete slabs, simplifying on-site quantity verification.

■ Block Support
This assists with basic dimension calculations used by exterior construction workers, such as the number of blocks and quantities required for block construction.

■ Gravity Retaining Wall/Separator Estimate
Based on the entered dimensions, it displays reference dimensions for retaining wall shape and verification locations. This can be used for pre-checks at civil engineering and exterior construction sites.

■ Specific Gravity Quick Reference
This assists with weight verification using the specific gravity of materials. Convenient for carpenters and civil engineering/construction workers who want to check material quantities and weights.

■ Standard Calculation/Memo
Standard calculations and on-site memos are also available within the app.

【Customizable to Your Work】

You can freely set four frequently used tools on the top screen.

Exterior construction workers can select functions needed for slope calculations and concrete slabs; carpenters for dimension calculations and radius calculations; and DIY enthusiasts can use it as a DIY calculator.

This app can be used as your own personal on-site calculator, tailored to your job and work style.

[Major calculations can be used offline]

Major calculation functions can be used regardless of the communication environment.

Even in construction sites with weak signals or outdoors, you can quickly access calculations such as slope calculations, radius calculations, dimension calculations, and concrete slab calculations.

This is an on-site app that supports the "I need to calculate now" needs of exterior workers, carpenters, civil engineering and construction workers, and DIY users.

[Notes on use]

Calculation results are reference values ​​for construction planning. For actual construction, prioritize design documents, manufacturer materials, laws and regulations, site conditions, and expert judgment.

What’s new

欲しい機能を送れる『機能リクエスト』を追加しました。
その他、軽微な改善を行いました。