Ratio Tally Calculator
Compare category counts as ratios.
Tap, click or press Space to keep count.
Tap anywhere inside or press Space
How the Ratio Tally Calculator Works
The Ratio Tally Calculator compares 2 or more category counts and reduces them to the simplest whole-number ratio, such as 3:2. The tool divides each count by the greatest common divisor (GCD).
- Count 2 or more categories: Tap to tally each category, such as Male and Female birds.
- Read the raw ratio: The display shows the counts as a ratio, such as 45:30.
- See the simplified ratio: The tool divides by the GCD to show 3:2.
- Check the decimal ratio: The tool shows the ratio as a single number, such as 1.5 to 1.
Ratio Tally Calculator Formula
The Ratio Tally Calculator simplified ratio equals each count divided by the greatest common divisor of all counts.
- A, B
- Counts of 2 categories
- GCD
- Largest number that divides both counts
Example: A = 48 and B = 36. GCD = 12. Simplified ratio = 4:3. Decimal ratio = 1.33 to 1.
Ratio Tally Calculator Reference Table
The Ratio Tally Calculator conversion table converts raw counts into simplified and decimal ratios.
| Count A | Count B | GCD | Simplified ratio | Decimal (A per B) |
|---|---|---|---|---|
| 20 | 10 | 10 | 2:1 | 2.00 |
| 45 | 30 | 15 | 3:2 | 1.50 |
| 48 | 36 | 12 | 4:3 | 1.33 |
| 25 | 75 | 25 | 1:3 | 0.33 |
| 56 | 42 | 14 | 4:3 | 1.33 |
| 17 | 13 | 1 | 17:13 | 1.31 |
About the Ratio Tally Calculator
A Ratio Tally Calculator is a counter that expresses category tallies as a ratio instead of a percentage. Ratios compare groups directly, such as 3 cars for every 2 bikes.
Ratios suit fields that report results that way, such as sex ratios in biology, student-to-teacher ratios in schools and win-to-loss ratios in sport.
Ways to Use the Ratio Tally Calculator
There are 5 main uses of the Ratio Tally Calculator, including sex ratio counts and win-loss ratios.
- Sex ratio counts: Biologists count males and females in a population sample.
- Win-loss ratios: Players compare wins with losses.
- Staff ratios: Childcare staff check child-to-adult ratios on outings.
- Mixing ratios: Workers count scoops of 2 ingredients to keep a 3:1 mix.
- Traffic ratios: Planners compare cars to bikes on a street.
Tool Details
- Category
- Analytics & Logs
- Controls
- Taps and keys
- Input Support
- Touch, Pen, Mouse, Keys
- Offline Ready
- On your device