分数計算機

共有リンク

はじめに

Fraction Calculator — Add, subtract, multiply, and divide fractions with steps. Enter Numerator 1, Denominator 1, Operation, Numerator 2, Denominator 2 to get an instant, accurate result.

計算式

Add/subtract: a/b ± c/d = (ad ± cb)/bd. Multiply: (a/b)×(c/d) = ac/bd. Divide: (a/b)÷(c/d) = ad/bc. Result is simplified by dividing by the GCD.

ステップごとの説明

Enter the Numerator 1.
Enter the Denominator 1.
Enter the Operation.
Enter the Numerator 2.
Enter the Denominator 2.
Click Calculate to see your result instantly.

実例

Example: With Numerator 1 = 1, Denominator 1 = 2, Operation = +, Numerator 2 = 1, Denominator 2 = 3, the Fraction Calculator gives N: 5, D: 6, Decimal: 0.8333.

よくある質問

Does it simplify the result automatically?

Yes, the numerator and denominator are always reduced by their greatest common divisor.

Can I use negative fractions?

Yes, enter a negative numerator or denominator and the sign carries through correctly.

What inputs does the Fraction Calculator need?

You'll need to provide: Numerator 1, Denominator 1, Operation, Numerator 2, Denominator 2. All fields use sensible defaults, so you can see a working example immediately and then adjust the values to match your own numbers.

How accurate is the Fraction Calculator?

The Fraction Calculator applies the formula exactly as calculated — Add/subtract: a/b ± c/d = (ad ± cb)/bd. Multiply: (a/b)×(c/d) = ac/bd. Divide: (a/b)÷(c/d) = ad/bc. Result is simplified by dividing by the GCD. — so results are precise for the inputs you provide. Accuracy depends on entering correct, realistic input values.

Is the Fraction Calculator free to use?

Yes, the Fraction Calculator is completely free, requires no signup, and runs instantly in your browser.