How do you calculate a K/D ratio?

Divide kills by deaths. 12 kills and 3 deaths is 12 / 3 = 4.00, which the page prints with the division it used. Assists are not part of it: K/D is kills over deaths, and adding 7 assists to that same line leaves the K/D at 4.00.

What is KDA, and is it the same as K/D?

No, and games do not even agree with each other on KDA. It folds assists into the numerator, so the rule matters: 12 kills, 7 assists and 3 deaths is 6.33 under (K + A) / D, the rule League of Legends and most scoreboard sites use, 5.17 under (K + A/2) / D where an assist counts half, and 4.75 under (K + A) / (D + 1). Pick the rule from the KDA rule box and the formula stays printed under the figure, so the number is never quoted without the denominator it came from.

Do assists count towards K/D?

Not in K/D, ever. They count in KDA, and how much they count is exactly what the three rules disagree about. Leave the assists box empty and it counts as 0, which the result says out loud, and KDA under (K + A) / D then reads the same as K/D.

How many more deaths can I take and keep my ratio?

The target line answers that too. At 12 kills against a target of 3.00, four deaths in total still sit exactly on 3.00, so one more death is affordable; against a target of 4.00 the next death drops you under it unless 4 more kills come first. With no deaths yet, 12 kills could carry 2 deaths and still be at or above 5.00.

What is a good K/D ratio?

That depends on the game, the mode and the lobby, and this page does not judge it. What the arithmetic says is plain: 1.00 means as many kills as deaths, above 1.00 means more kills than deaths, and below 1.00 means the other way round. The comparison you make after that is yours.

Can it read my stats from Warzone, Valorant or League of Legends?

No. There is no account, no sign-up and no game connection here: the page computes ratios from the numbers you type off the scoreboard you are looking at. That is also why it works for any game, including ones with no stats site at all.

What can it refuse, and why?

Only input that has no arithmetic behind it. Kills and deaths cannot be empty, a count has to be a whole number rather than 12.5, counts cannot be negative, and nothing above 1,000,000,000 is taken. A target has to be above zero, or the box can simply be left empty. Each refusal names the box to fix and what to put in it, and no bad input is quietly rounded into a different answer.

Is anything I type sent anywhere?

No. The arithmetic runs in your browser and nothing is uploaded. The last line you entered is kept in this browser's own local storage so the page opens where you left it, and the Start over button above the heading forgets it.

Kill Death Ratio Calculator

K/D is kills divided by deaths, and KDA is a different figure that games do not define the same way, so this page computes both and prints what each one was divided by. A line of 12 kills, 3 deaths and 7 assists is a K/D of 4.00, and its KDA is 6.33 under (K + A) / D, 5.17 under (K + A/2) / D where an assist counts half, or 4.75 under (K + A) / (D + 1), the plus-one convention. Zero deaths is reported as undefined, because a ratio with no denominator is not the kill count and not infinity. A target box turns the same numbers around: from 12 kills and 3 deaths, reaching a K/D of 5.00 takes 3 more kills with no further deaths. Everything runs in your browser from the scoreboard you are reading, with no account and no game connection.

K/D4.0012 kills · 3 deaths · 7 assists · KDA 6.33

Kills
Deaths
Assists
KDA rule
K/D: 4.00kills over deaths
KDA: 6.33(K + A) / D

12 kills, 3 deaths and 7 assists: K/D 4.00 from kills over deaths, KDA 6.33 under (K + A) / D.

The working

K/D = kills / deaths = 12 / 3 = 4.00
KDA = (K + A) / D = (12 + 7) / 3 = 19 / 3 = 6.33
scoreline 12 / 3 / 7 as K / D / A, net kills 12 - 3 = +9
4.00 is under the 5.00 target. 3 more kills with no further deaths reaches it, and at 4 deaths it would take 8 more.

Target K/D

4.00 is under the 5.00 target. 3 more kills with no further deaths reaches it, and at 4 deaths it would take 8 more.

Kills and assists together, divided by deaths. This is the usual KDA, the one League of Legends and most scoreboard sites print, and it is undefined at zero deaths because the denominator is zero.

Ratios are shown to two decimal places: KDA 6.33 comes from 6.333333333. Nothing is rounded before the division.

Three cases, run through the same arithmetic as the figures above:

12 kills, 3 deathskills over deaths
4.00
12 kills, 7 assists, 3 deaths(K + A) / D
6.33
12 kills, 0 deathsno denominator
undefined, no ratio at 0 deaths

Accuracy. Exact arithmetic on the numbers you type, with the denominator of each ratio named on screen because games and sites genuinely differ on whether assists count and on what to do with zero deaths. It reads no account, connects to no API and fetches no match history.

K/D and KDA are not the same number

K/D is kills divided by deaths, and an assist has never moved it: 12 kills and 3 deaths is 4.00 whether the line carries 7 assists or none. KDA puts assists into the numerator, and this is where games part company. The same 12 kills, 7 assists and 3 deaths reads 6.33 under (K + A) / D, the rule most scoreboard sites and League of Legends use, 5.17 under (K + A/2) / D, where an assist counts half, and 4.75 under (K + A) / (D + 1), the plus-one convention that keeps a figure on the board when nobody died. Pick the rule your game uses: the formula stays printed under the KDA figure, so the number is never quoted without the denominator it came from.

Zero deaths has no ratio

A ratio divides by deaths, so a line with no deaths has nothing to divide by and K/D is undefined. This page says so rather than printing the kill count in its place, which is a different fact, or the word infinity, which is not what a zero denominator means. Under (K + A) / (D + 1) a figure is still shown, because that rule adds one to deaths before dividing: 12 kills and 7 assists with no deaths comes to 19.00 there, and it is a convention for ranking rather than a ratio of what happened. The target line answers the same way: it counts how many deaths your kills could carry and still sit at or above the number you asked for.

Reaching a target

The target arithmetic holds your death count still and adds kills. From 12 kills and 3 deaths, a target of 5.00 needs 15 kills in total, which is 3 more kills with no further deaths, and one more death after that would put the requirement at 8. Deaths and kills are whole numbers, so the answer is rounded up to the next whole kill: the figure shown is the first count that reaches the target rather than one that lands just under it. Nothing here reads an account, a match history or a game API. The counts come from the scoreboard you are looking at, they stay in this browser so the page opens where you left it, and Start over at the top of the page forgets them.

Common questions

How do you calculate a K/D ratio?: Divide kills by deaths. 12 kills and 3 deaths is 12 / 3 = 4.00, which the page prints with the division it used. Assists are not part of it: K/D is kills over deaths, and adding 7 assists to that same line leaves the K/D at 4.00.
What is KDA, and is it the same as K/D?: No, and games do not even agree with each other on KDA. It folds assists into the numerator, so the rule matters: 12 kills, 7 assists and 3 deaths is 6.33 under (K + A) / D, the rule League of Legends and most scoreboard sites use, 5.17 under (K + A/2) / D where an assist counts half, and 4.75 under (K + A) / (D + 1). Pick the rule from the KDA rule box and the formula stays printed under the figure, so the number is never quoted without the denominator it came from.
What is my K/D if I have zero deaths?: There is not one. A ratio divides by deaths, so with zero deaths there is nothing to divide by and K/D is undefined. This page says that instead of printing the kill count in its place, which is a different fact, or the word infinity, which is not what a zero denominator means. If your game shows a figure anyway, it is using a convention: switch the rule to (K + A) / (D + 1) and 12 kills with 7 assists and no deaths comes to 19.00, which is that convention rather than a ratio of what happened.
Do assists count towards K/D?: Not in K/D, ever. They count in KDA, and how much they count is exactly what the three rules disagree about. Leave the assists box empty and it counts as 0, which the result says out loud, and KDA under (K + A) / D then reads the same as K/D.
How many kills do I need to reach a target K/D?: Enter the target and the page works it out from the deaths you already have. From 12 kills and 3 deaths, a K/D of 5.00 needs 15 kills in total, which is 3 more with no further deaths, and one more death after that would put the requirement at 8. The answer is rounded up to the next whole kill, so the count shown is the first one that actually reaches the target.
How many more deaths can I take and keep my ratio?: The target line answers that too. At 12 kills against a target of 3.00, four deaths in total still sit exactly on 3.00, so one more death is affordable; against a target of 4.00 the next death drops you under it unless 4 more kills come first. With no deaths yet, 12 kills could carry 2 deaths and still be at or above 5.00.
What is a good K/D ratio?: That depends on the game, the mode and the lobby, and this page does not judge it. What the arithmetic says is plain: 1.00 means as many kills as deaths, above 1.00 means more kills than deaths, and below 1.00 means the other way round. The comparison you make after that is yours.
Can it read my stats from Warzone, Valorant or League of Legends?: No. There is no account, no sign-up and no game connection here: the page computes ratios from the numbers you type off the scoreboard you are looking at. That is also why it works for any game, including ones with no stats site at all.
What can it refuse, and why?: Only input that has no arithmetic behind it. Kills and deaths cannot be empty, a count has to be a whole number rather than 12.5, counts cannot be negative, and nothing above 1,000,000,000 is taken. A target has to be above zero, or the box can simply be left empty. Each refusal names the box to fix and what to put in it, and no bad input is quietly rounded into a different answer.
Is anything I type sent anywhere?: No. The arithmetic runs in your browser and nothing is uploaded. The last line you entered is kept in this browser's own local storage so the page opens where you left it, and the Start over button above the heading forgets it.

Exact arithmetic on the numbers you type, with the denominator of each ratio named on screen because games and sites genuinely differ on whether assists count and on what to do with zero deaths. It reads no account, connects to no API and fetches no match history.