Fraction to decimal: divide numerator by denominator. 3/4 = 0.75. 1/3 = 0.3333...
Decimal to fraction: write as x/1, multiply both by 10^(decimal places), then simplify.
1/7 = 0.142857 — a repeating decimal with 6-digit cycle.
This tool is most valuable when you need a result to compare against something else: a quoted figure, a competing option, or a budget threshold. Accurate comparisons require accurate inputs and arithmetic — this calculator ensures both.
A common mistake is applying the formula in the wrong direction — particularly with percentage and ratio problems, where the part and the whole can be mistakenly swapped. Check which value is the reference (the 'whole') before entering inputs.
A student checks their overall module grade before results day: 3 assignments scored 72%, 68%, and 81% — the calculator confirms the weighted average and tells them what score they would need on the final exam to achieve a target grade.
Divide the numerator by the denominator. 3/4 = 3 ÷ 4 = 0.75.
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