About the KD Calculator (Kill/Death Ratio)
This tool computes two standard gaming performance ratios from your stat line — KD (Kill/Death) ratio and KDA (Kill/Death/Assist) ratio — plus your average kills and deaths per match.
The formulas
- KD Ratio = Kills ÷ Deaths. A KD of 1.0 means you get exactly one kill for every death. A KD of 2.0 means twice as many kills as deaths.
- KDA Ratio = (Kills + Assists) ÷ Deaths. This is the same idea as KD but also credits assists — helping a teammate secure a kill — so it rewards team play even when you did not land the finishing blow. It is the standard used in team-based games such as MOBAs.
- Kills per Match = Kills ÷ Matches Played, and Deaths per Match = Deaths ÷ Matches Played. These normalize your totals so you can compare performance across players who have played a different number of games.
Handling zero deaths
Dividing by zero is mathematically undefined, so if your death count is 0 this calculator follows the convention used by most game trackers and leaderboards: it substitutes 1 for the deaths in the ratio. A flawless run of 12 kills and 0 deaths is reported as a KD of 12.0, not an error or "infinity".
Reading your result
Above a KD of 1.0, you are trading favorably — more kills than deaths. Below 1.0, deaths outnumber kills. KD alone does not capture objectives, assists, or team contribution, which is why KDA and the per-match averages are shown alongside it — together they give a fuller picture than any single number.
Frequently Asked Questions
How is KD ratio calculated?
What is the difference between KD and KDA?
What happens if I have zero deaths?
Is a higher KD ratio always better?
Common Tip Percentages
| Service | Typical Tip Range | Notes |
|---|---|---|
| Restaurant (sit-down) | 15–20% | 20%+ for exceptional service |
| Food delivery | 10–20% | Consider extra for long distances |
| Taxi / rideshare | 10–20% | More for assistance with luggage |
| Hotel housekeeping | $2–5/night | Leave daily, not just at checkout |
| Barber / hair salon | 15–20% | On pre-discount total |
| Pizza delivery | 10–15% or $3–5 minimum | Higher in bad weather |
General Household Budget Ratios (50/30/20 Rule)
| Category | % of Net Income | Examples |
|---|---|---|
| Needs | 50% | Rent, groceries, utilities, insurance |
| Wants | 30% | Dining out, entertainment, hobbies |
| Savings / Debt | 20% | Emergency fund, retirement, extra payments |
Common Measurement Conversions for Everyday Use
| Quantity | US / Imperial | Metric Equivalent |
|---|---|---|
| 1 cup | 8 fl oz | 237 mL |
| 1 pint | 16 fl oz | 473 mL |
| 1 quart | 32 fl oz | 946 mL |
| 1 gallon | 128 fl oz | 3.785 L |
| 1 lb | 16 oz | 453.6 g |
| 1 ft | 12 in | 30.48 cm |