# 鉄筋電卓 − 重量・定尺・配筋・生コン

> Utilities

Canonical page: [https://chrome-stats.com/d/id6783316434](https://chrome-stats.com/d/id6783316434)

## Overview

- **ID:** `id6783316434`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Moeki Kozawa
- **Category:** Utilities
- **Version:** 1.2.2
- **Last updated:** 2026-09-20
- **First published:** 2026-06-25
- **Size:** 62 MB
- **Data as of:** 2026-09-23
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/%E9%89%84%E7%AD%8B%E9%9B%BB%E5%8D%93-%E9%87%8D%E9%87%8F-%E5%AE%9A%E5%B0%BA-%E9%85%8D%E7%AD%8B-%E7%94%9F%E3%82%B3%E3%83%B3/id6783316434)
- **Website:** [https://moekikozawa.com/apps/rebar-calc/](https://moekikozawa.com/apps/rebar-calc/)
- **Privacy policy:** [https://moekikozawa.com/apps/rebar-calc/privacy-policy/](https://moekikozawa.com/apps/rebar-calc/privacy-policy/)

## Description

[Built for rebar, formwork and site crews]
Run the numbers on site. Enter the bar size and length for total weight, the span and pitch for bar count, and get stock-cut loss, concrete volume and mixer-truck count from your phone.

[What it calculates]
- Rebar weight: total weight from size (D10-D51), length and count (JIS nominal unit mass)
- Stock-cut & loss: required stock bars, offcut and loss rate
- Spacing to count: bar count and actual pitch from span, pitch and end clearance
- Concrete volume: volume and mixer-truck count from member size x qty and loss
- Lap / development length: required length from size and multiplier (editable quick table)
- Unit convert: tsubo, square meters, jo, shaku, kg, t

[Takeoff (Pro)]
Group line items by bar size, sum the total weight, and share as a PDF.

[Privacy & offline]
All data stays on your device. No servers, no logins, no ads, no required network.

[Pricing]
The basic calculators are free. The Pro upgrade (one-time, no subscription) unlocks the takeoff sheet, takeoff PDF export, unlimited saved history and the company-logo feature.

Note: results are an aid. Always confirm final ordering and construction against the drawings, standards and specifications.

## Rankings

- #1,052,237 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6783316434)