A cross-multiplication calculator solves proportions of the form a/b = c/d by computing a×d = b×c. Cross-multiplication is a fundamental technique for solving equations involving fractions, finding equivalent ratios, scaling recipes, and map distance calculations.
Difficulty:beginner
References
🔒
100% Free
No sign-up ever
✓
Accurate
Verified formulas
⚡
Instant
Results as you type
📱
Mobile Ready
All devices