Blackjack True Count Calculator (Hi-Lo)

Compute effective damage per second (DPS) from hit damage, attack speed, crit chance and crit multiplier.

From target HP, damage per hit and attack speed, compute the time to kill, the hits needed and your DPS.

Compute effective HP (EHP) from raw HP and damage reduction to compare survivability from armor or resistances.

Compute your win rate from wins and losses, and how many more wins you need to reach a target win rate.

From base damage, crit chance and crit multiplier, compute your average damage per hit and the effective damage boost.

Compute KDA and KD ratio from kills, assists and deaths, plus the kills needed to hit a target.

From per-run yield and time, get your hourly farming rate plus the runs and time needed to hit a target amount.

From tick damage, tick interval and duration, compute a damage-over-time effect’s total damage and DPS.

From a base cooldown and cooldown-reduction percentage, get the effective cooldown and casts per minute.

From an XP goal, XP per activity and time per activity, work out how many runs and how long to reach it.

From an armor value and constant K, compute the damage-reduction percentage and effective-HP multiplier (DR = armor ÷ (armor + K)).

Compute effective healing per second (HPS) from heal amount, cast time, crit chance, crit multiplier and overheal.

From target armor, flat penetration and percent penetration, get the effective armor, damage reduction and how much extra damage you deal.

From the base drop rate, hard-pity count and pulls on hand, get the chance of at least one copy and the average pulls per copy.

Work out how many centimetres of mouse movement make a full 360° turn from your DPI, in-game sensitivity and yaw — the standard way to match aim across games.

Convert game FOV between aspect ratios and between horizontal and vertical fields of view.

From a native resolution and render-scale percentage, get the actual rendered pixels, total pixel count and relative GPU load (which scales with the square of the percentage).

From near/far damage and the falloff start and end ranges, linearly interpolate the effective damage and damage percentage at a target distance.

From damage per shot, fire rate, magazine size and reload time, compute burst DPS and the sustained DPS once reload downtime is included.

Add peripheral, PC-processing and display latency to get total system latency (ms) and its equivalent in frames of delay at your monitor refresh rate.

From a server tick rate, compute the time per tick, ticks in a time window, and the interpolation buffer delay.

From your current tier, daily XP and days left in the season, project whether you will max the battle pass in time and the XP-per-day you need.

Estimate the number of games needed to reach a target rank from current points, points gained/lost per game and win rate.

Compare two abilities by damage per mana, casts per mana bar and total output to see which is more efficient.

From base attack speed and increased attack speed %, get your real attacks per second and the time between attacks.

From target effective HP and damage per hit (with crit), find how many hits or shots it takes to kill.

Combine several independent damage-reduction percentages multiplicatively for total reduction and the effective-HP multiplier.

From party size and level, compute the easy / medium / hard / deadly XP budget and rate an encounter’s difficulty (D&D 5e SRD).

Compute your K/D and KDA ratios from kills, deaths and assists, and how many more kills you need to hit a target K/D.

Compute frame advantage (plus/minus) from the opponent’s stun and your move’s recovery, and check whether a move is punishable on block.

From a per-pull drop rate and number of pulls, find the chance of at least one hit and the pulls needed for a target confidence.

Enter a goal time, a reference split and your current time to see how far ahead or behind pace you are and your projected finish.

Compute total games, games per team and number of rounds for a single or double round-robin, and estimate how long the event will take.

From a boss HP pool, enrage timer and raid size, work out the total raid DPS and per-player DPS needed to kill it before enrage.

Convert coordinates between the Overworld and the Nether (÷8 or ×8) so your portals link up correctly instead of connecting to the wrong one.

Work out how many mineral blocks, what effect range and which layers you need for each beacon power level (1–4).

Work out how many items a stack of fuel can smelt and compare the efficiency of different fuels (coal, wood, lava, coal blocks).

Enter dice notation like 2d6+3 to get the minimum, average and maximum damage, plus the probability of hitting a target total.

Enter the target’s remaining HP, species catch rate, Poké Ball multiplier and status condition to get the catch probability per throw and the expected number of throws.

Use the hypergeometric distribution to find the probability of drawing a given number of lands in your Magic: The Gathering opening hand.

Enter the XP you still need, your normal XP per hour and the event multiplier to see the hours required with and without the event and how much time you save.

Compare hit chance and average roll for a normal d20 versus advantage (take higher) and disadvantage (take lower).

Roll a pool of dice with a success threshold and get the probability of hitting the required successes plus the expected number of hits.

Compute the expected value of exploding dice, where rolling at or above a threshold lets you reroll and add.

Compute points spent and remaining budget (27 points) for six ability scores under the D&D 5e standard point-buy rules.

From points, field goal attempts and free throw attempts, work out basketball True Shooting % (TS%) that accounts for twos, threes and free throws together.

Compute a Rubik’s Cube average of 5 or 12 solves under WCA rules, dropping the best and worst times.

Add up standard piece values (pawn 1, knight/bishop 3, rook 5, queen 9) to get each side’s material and the balance.

Estimate possessions from field goals, free throws and turnovers to get points per possession (PPP) and offensive rating per 100.

Use Hollinger’s Game Score formula to rate a player’s overall single-game performance from the box score.

Enter putouts, assists and errors to get fielding percentage, total chances and a quality rating.

Compute batting average (.XXX) from hits and at-bats, plus the consecutive hits needed to reach a target average.

Compute a batter's strike rate (runs per 100 balls) from runs scored and balls faced.

Compute a bowler's economy rate (average runs conceded per over) from runs and overs bowled, and project the runs over a full spell.

Estimate a player's usage rate (USG%) from their shot attempts, free throws, turnovers and minutes together with team totals.

Use the Independent Chip Model to convert each player’s chip stack and the payout structure into their true cash equity (for final-table deals).

Compute hit probability for normal, advantage and disadvantage d20 rolls from attack bonus and target AC.

Compute volleyball hitting percentage (attack efficiency) from kills, errors and total attack attempts.

Estimate your tournament performance rating (TPR) from the average opponent rating and your score percentage using the FIDE rating-difference table.

Compute a hockey or soccer goalkeeper’s goals against average (GAA) from goals allowed and time played.

Work out how much fuel a sim race needs — from race length, lap time and fuel per lap — plus a safety margin of spare laps.

Estimate the offline earnings an idle/incremental game hands you on return, from per-second rate, hours away, offline efficiency and a time cap.

Estimate the expected attempts and total cost to enhance gear to a target level from the per-attempt success rate, upgrades needed and cost per try.

From damage per shot, fire rate and target health, work out the shots and time needed to kill a target in a shooter.

From the base shiny rate, number of shiny rolls (Shiny Charm / Masuda) and encounters, get the cumulative shiny chance and encounters needed for each percentile.

Compute a Pokémon’s actual stat (Gen 3+) from its base stat, IV, EV, level and nature.

Compute a D&D 5e spell save DC and spell attack bonus from level, spellcasting ability modifier and other bonuses.

Compute a D&D 5e passive Perception (or any passive skill) score from the ability modifier, proficiency and advantage/disadvantage.

From a fall height, compute D&D 5e falling damage dice, average and min/max range (1d6 per 10 ft, capped at 20d6).

Compute D&D 5e carrying capacity, push/drag/lift limit and the variant encumbrance thresholds from a creature's Strength score and size.

From a Strength score, compute D&D 5e long-jump and high-jump distance with and without a running start.

Look up D&D 5e spell slots per spell level by class type (full, half or third caster) and class level.

Compute D&D 5e travel distance per minute, hour and day for fast, normal and slow pace.

Apply cornhole cancellation scoring: from each team's bags in the hole and on the board this round, get the net round points, updated totals and who reaches 21 first.

Compute the probability of rolling a Yahtzee (five of a kind) or a target number of matching dice within three rolls, keeping matching dice.

Enter your remaining 501/301 score to get the standard three-dart checkout combination and suggested route.

Work out the points paid in Japanese Riichi mahjong from han and fu, split by dealer/non-dealer and ron/tsumo.

Enter your four cards and the cut card to total the fifteens, pairs, runs, flush and nobs in a cribbage hand.

Compute a disc golf handicap from your recent round scores and the course par (your average strokes over par).

From a buff duration and cooldown, work out the percentage of time an ability is active and how many cycles it fits per minute.