Leaderboard ad · 728×90
Ratio Calculator
Simplify ratios and solve for the missing term — handy for image sizes and recipes.
1. Simplify a ratio
:
2. Solve A : B = C : ?
:=:?
Formula: ? = C × B ÷ A
Tip: A and B must be positive numbers
In-content ad · responsive
Related Tools
Percentage Calculator
Three modes: percent of a number, what percent X is of Y, and change between two values.
Chinese Amount in Words
Convert amounts to Chinese RMB uppercase words for invoices and contracts.
Fraction Calculator
Add, subtract, multiply and divide fractions with automatic simplification and decimals.
Business Days Calculator
Count total days, weekdays and weekend days between two dates.
GPA Calculator
Compute credit-weighted GPA and average score with unlimited courses.
Area Converter
Convert between square meters, mu, hectares, square kilometers and square feet.