あらゆる小数を即座に変換。
高精度かつ瞬時に。
ユニバーサル高精度数学プラットフォーム。小数から分数、2進数 (IEEE 754)、16進数 (0x)、8進数、パーセント、インチ、時間への変換と詳細な計算ステップを提供します。
人気の変換エンジン
Specialized engineering calculators with deep formulas, interactive controls, and visual tools.
分数計算機
分数の足し算・引き算・掛け算・割り算・約分計算
小数から分数へ変換
小数を既約分数や帯分数へ変換・最大公約数(GCD)手順付き
10進数から2進数へ変換
IEEE-754 32ビット単精度浮動小数点および2の補数解析
10進数から16進数へ変換
基数16の16進数表記・バイト区切り・RGBカラープレビュー
小数からパーセントへ変換
小数を百分率(%)・ベーシスポイント(bps)・パーミルへ変換
小数からインチ(分数)へ変換
小数のインチを1/16″〜1/64″の分数表記およびミリメートル(mm)へ変換
Common Decimal Equivalence Benchmarks
Standard unit fractions with decimal values, repeating cycles, and percentages.
| Decimal | Fraction | Binary (8-bit) | Percent | Action |
|---|---|---|---|---|
| 0.125 | 1/8 | 00100000₂ | 12.5% | |
| 0.25 | 1/4 | 01000000₂ | 25.0% | |
| 0.333333... | 1/3 | 01010101₂ | 33.33% | |
| 0.375 | 3/8 | 01100000₂ | 37.5% | |
| 0.5 | 1/2 | 10000000₂ | 50.0% | |
| 0.625 | 5/8 | 10100000₂ | 62.5% | |
| 0.666666... | 2/3 | 10101010₂ | 66.67% | |
| 0.75 | 3/4 | 11000000₂ | 75.0% | |
| 0.875 | 7/8 | 11100000₂ | 87.5% | |
| 1.0 | 1/1 | 00000001₂ | 100.0% |
Frequently Asked Questions
Everything you need to know about decimal conversions, accuracy, and formulas.
01What makes decimalcalc different from existing decimal converter tools?▼
decimalcalc is built with a modern developer interface, high-speed computation engines, 64-bit IEEE high-precision calculation engines, and simultaneous multi-radix computation. You get instant fractions, binary (including IEEE 754 floats), hexadecimal, percentages, fractional inches, and payroll time with full arithmetic step-by-step proofs.
02Does decimalcalc handle repeating or recurring decimals?▼
Yes! Our rational fraction solver automatically identifies recurring decimal sequences (such as 0.3333... → 1/3, 0.6666... → 2/3, 0.1666... → 1/6) and reduces fractions to their exact simplest form using the Euclidean Greatest Common Divisor (GCD) algorithm.
03How does the Decimal to Inches conversion work?▼
It maps decimal inches to standard architectural and engineering fractional inches (1/16″, 1/32″, and 1/64″ precision) while displaying the exact tolerance difference in thousandths of an inch (mils) and millimeters.
04Are all calculations fast and responsive?▼
100% yes. All calculations execute client-side in your browser with sub-millisecond latency.