ForHosting KIT

Everything you need.
One Kit.

Hundreds of ready-made tasks — PDF, images, audio, OCR, text AI, scraping, data and more — behind a single REST API. Send a job, get a finished result by webhook. No servers, no per-model tokens, a price you can read.

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7825ready-made tools
6channels
1API & key
$0.002per call, from

New capabilities

Fresh in the kit — just landed.

New⚙️ Developer UtilitiesNull space calculatorkernel basis of a matrix from its rowsSsamurai$0.002Open math.null_spaceNew⚙️ Developer UtilitiesLogical NOR calculatortrue only when both inputs are falsePPavilion$0.002Open math.norNew⚙️ Developer UtilitiesMultiply complex numbers(a+bi)(c+di) product, freeAabuela$0.002Open math.multiply_complex_numbersNew⚙️ Developer UtilitiesMöbius strip calculatorsurface area and edge lengthSsamurai$0.002Open math.mobius_stripNew⚙️ Developer UtilitiesLong multiplication calculatordigit-by-digit product, freeAabuela$0.002Open math.long_multiplicationNew⚙️ Developer UtilitiesMean calculatorarithmetic mean of a list of numbersPPavilion$0.002Open math.meanNew⚙️ Developer UtilitiesLog2 calculatorbase-2 logarithm of a positive numberSsamurai$0.002Open math.log_2New⚙️ Developer UtilitiesLine of intersection of two planesparametric formAabuela$0.002Open math.line_of_intersection_of_two_planesNew⚙️ Developer UtilitiesLinear-feedback shift registerLFSR bit sequence from tapsSsamurai$0.002Open math.linear_feedback_shift_registerNew⚙️ Developer UtilitiesLinear combination calculatorweighted sum of vectorsPPavilion$0.002Open math.linear_combinationNew⚙️ Developer UtilitiesLength of a rectangle calculatorfrom area and width, freeAabuela$0.002Open math.length_of_a_rectangleNew⚙️ Developer UtilitiesLeast to greatest fractionssort a list from smallest to largestPPavilion$0.002Open math.least_to_greatest_fractions

The full catalog

Search or filter by category. Every capability is its own endpoint with a published price.

⚙️ Developer UtilitiesFree
Chess material balance calculator
compare both sides
Kkatherine
POST /hobby/chess-material-balance$0.002
⚙️ Developer UtilitiesFree
D&D Encumbrance Threshold Calculator by Strength
Bbarbara
POST /hobby/dnd-encumbrance$0.002
⚙️ Developer UtilitiesFree
D&D initiative modifier calculator
dex, feats & items
Ssamurai
POST /hobby/dnd-initiative-modifier$0.002
⚙️ Developer UtilitiesFree
D&D point buy cost calculator
5e ability score total
PPavilion
POST /hobby/dnd-point-buy$0.002
⚙️ Developer UtilitiesFree
D&D spell attack bonus calculator
proficiency plus ability modifier
Kkatherine
POST /hobby/dnd-spell-attack-bonus$0.002
⚙️ Developer UtilitiesFree
D&D XP to Next Level Calculator
Ffrances
POST /hobby/dnd-xp-to-next-level$0.002
⚙️ Developer UtilitiesFree
d20 success chance vs DC calculator
P(d20 + mod ≥ DC), free
Ssamurai
POST /hobby/game-d20-success$0.002
⚙️ Developer UtilitiesFree
Dice notation min and max calculator
range for NdS rolls, free
Aabuela
POST /hobby/game-dice-notation-range$0.002
⚙️ Developer UtilitiesFree
Chess performance rating calculator
tournament PR from field & score %
PPavilion
POST /hobby/chess-performance-rating$0.002
⚙️ Developer UtilitiesFree
Knitting stitches for width calculator
use your swatch gauge
Bbarbara
POST /hobby/craft-knit-stitches-for-width$0.002
⚙️ Developer UtilitiesFree
D&D challenge rating to XP calculator
5e CR to experience points
Aabuela
POST /hobby/dnd-cr-to-xp$0.002
⚙️ Developer UtilitiesFree
Bingo card combinations calculator
how many distinct cards
PPavilion
POST /hobby/game-bingo-combinations$0.002
⚙️ Developer UtilitiesFree
Go Area Score Calculator
Territory, Stones and Komi
Ffrances
POST /hobby/game-go-area-score$0.002
⚙️ Developer UtilitiesFree
MTG mana curve calculator
average mana value and curve summary, free
Aabuela
POST /hobby/game-mtg-mana-curve$0.002
⚙️ Developer UtilitiesFree
Scrabble bingo bonus calculator
7-tile play + 50 points, free
Ssamurai
POST /hobby/game-scrabble-bingo$0.002
⚙️ Developer UtilitiesFree
Sudoku Grid Validity Checker
Find Row, Column and Box Conflicts
Kkatherine
POST /hobby/game-sudoku-validity$0.002
⚙️ Developer UtilitiesFree
Poker starting hand combinations calculator
exact preflop combos
Bbarbara
POST /hobby/poker-hand-combinations$0.002
⚙️ Developer UtilitiesFree
Poker Pot Odds Calculator
Ratio and Call Percentage
Ffrances
POST /hobby/poker-pot-odds$0.002
⚙️ Developer UtilitiesFree
Beading Strand Length Calculator
Beads and Spacers
Kkatherine
POST /hobby/craft-bead-strand-length$0.002
⚙️ Developer UtilitiesFree
Crochet Flat Circle Rounds Calculator
Stitch Increases
Kkatherine
POST /hobby/craft-crochet-circle-rounds$0.002
⚙️ Developer UtilitiesFree
Cross stitch floss estimator
calculate skeins by color
Ffrances
POST /hobby/craft-crossstitch-floss$0.002
⚙️ Developer UtilitiesFree
Stitch gauge from swatch calculator
sts & rows per unit, free
Ssamurai
POST /hobby/craft-knit-gauge-from-swatch$0.002
⚙️ Developer UtilitiesFree
Quilt Batting Size Calculator for Shrinkage and Trimming
Bbarbara
POST /hobby/craft-quilt-batting$0.002
⚙️ Developer UtilitiesFree
Quilt block count calculator
blocks, rows and columns for a finished size
PPavilion
POST /hobby/craft-quilt-block-count$0.002
⚙️ Developer UtilitiesFree
Bias binding yardage calculator
length and fabric square
Aabuela
POST /hobby/craft-sewing-bias-binding$0.002
⚙️ Developer UtilitiesFree
Soap making water amount calculator
water from lye & concentration
Ssamurai
POST /hobby/craft-soap-water$0.002
⚙️ Developer UtilitiesFree
Candle Container Wax Weight Calculator
Ffrances
POST /hobby/craft-candle-container-wax$0.002
⚙️ Developer UtilitiesFree
Diamond painting drill count calculator
drills per color and total
Aabuela
POST /hobby/craft-diamond-painting-drills$0.002
⚙️ Developer UtilitiesFree
Boards for Panel Width Calculator
Plan a Glue-Up
Bbarbara
POST /hobby/craft-panel-board-count$0.002
⚙️ Developer UtilitiesFree
Bowling Average Calculator for League Standings and Handicap
Ffrances
POST /hobby/sport-bowling-average$0.002
⚙️ Developer UtilitiesFree
Darts 501 score remaining calculator
subtract a visit, free
Ssamurai
POST /hobby/sport-darts-501-remaining$0.002
⚙️ Developer UtilitiesFree
Golf course handicap calculator
index to course handicap (slope & rating)
PPavilion
POST /hobby/sport-golf-course-handicap$0.002
⚙️ Developer UtilitiesFree
Golf strokes received per hole calculator by stroke index
Kkatherine
POST /hobby/sport-golf-strokes-received$0.002
⚙️ Developer UtilitiesFree
Bicycle gear ratio calculator
chainring and sprocket teeth to gear ratio
Ssamurai
POST /hobby/sport-bike-gear-ratio$0.002
⚙️ Developer UtilitiesFree
Bike speed from gear and cadence calculator
road speed from RPM
PPavilion
POST /hobby/sport-bike-speed-from-cadence-gear$0.002
⚙️ Developer UtilitiesFree
Calories burned from MET calculator
MET, body weight and duration
Ssamurai
POST /hobby/sport-calories-met$0.002
⚙️ Developer UtilitiesFree
Bouldering grade conversion calculator
V-scale ↔ Fontainebleau
Aabuela
POST /hobby/sport-climb-boulder-convert$0.002
⚙️ Developer UtilitiesFree
Scuba Air Consumption at Depth Calculator
SAC, ATA and Tank Time
Ffrances
POST /hobby/sport-dive-air-consumption$0.002
⚙️ Developer UtilitiesFree
Tobler Hiking Speed Calculator for Uphill and Downhill Slopes
Kkatherine
POST /hobby/sport-hike-tobler$0.002
⚙️ Developer UtilitiesFree
Count letters only
ignore spaces, digits and punctuation
Kkatherine
POST /str/char-count-letters-only$0.002
⚙️ Developer UtilitiesFree
Count lowercase letters in text
free online counter
Ffrances
POST /str/char-count-lowercase$0.002
⚙️ Developer UtilitiesFree
Count consonants in text
free consonant counter
Bbarbara
POST /str/count-consonants$0.002
⚙️ Developer UtilitiesFree
Count hashtags
tally #tags in text for social media planning
PPavilion
POST /str/count-hashtags$0.002
⚙️ Developer UtilitiesFree
Count tab characters
detect tabs in text free online
Aabuela
POST /str/count-tabs$0.002
⚙️ Developer UtilitiesFree
Count occurrences of a word
whole-word text counter
Bbarbara
POST /str/count-word-occurrences$0.002
⚙️ Developer UtilitiesFree
Estimate page count from text
words per page for manuscripts and essays
Ssamurai
POST /str/estimate-page-count$0.002
⚙️ Developer UtilitiesFree
Find longest line
character length of the longest line, free
Aabuela
POST /str/longest-line$0.002
⚙️ Developer UtilitiesFree
Find the shortest word in text and its length
Ffrances
POST /str/shortest-word$0.002
⚙️ Developer UtilitiesFree
Character bigram frequency counter
adjacent pair counts in text
Ssamurai
POST /str/char-bigram-frequency$0.002
⚙️ Developer UtilitiesFree
Flesch Reading Ease score calculator for English text
Bbarbara
POST /str/flesch-reading-ease$0.002
⚙️ Developer UtilitiesFree
Convert to HTTP-Header-Case
format header field names
Kkatherine
POST /str/header-case$0.002
⚙️ Developer UtilitiesFree
Most common word finder
top word and count in any text, free
Aabuela
POST /str/most-common-word$0.002
⚙️ Developer UtilitiesFree
Get nth word
extract the word at a position from text free
PPavilion
POST /str/nth-word$0.002
⚙️ Developer UtilitiesFree
SMOG readability index calculator
estimate reading grade
Ffrances
POST /str/smog-index$0.002
⚙️ Developer UtilitiesFree
Swap case converter
flip upper and lower letters, free
Ssamurai
POST /str/swap-case$0.002
⚙️ Developer UtilitiesFree
Type-Token Ratio Calculator for Lexical Diversity
Kkatherine
POST /str/type-token-ratio$0.002
⚙️ Developer UtilitiesFree
Count word frequency
rank words most to least free
PPavilion
POST /str/word-frequency$0.002
⚙️ Developer UtilitiesFree
Detect text case style
camelCase, snake_case, kebab-case and more
Kkatherine
POST /str/detect-case$0.002
⚙️ Developer UtilitiesFree
Convert to flatcase
remove separators, lowercase into one string, free
Aabuela
POST /str/flat-case$0.002
⚙️ Developer UtilitiesFree
MLA title case converter
capitalize titles by MLA rules
Ffrances
POST /str/mla-title-case$0.002

How it works

1

Get your key

Create an account with your email and add balance when you need it. No subscription, no sales call.

2

Call the endpoint

One authenticated POST. The API returns a task_id immediately — copy-paste snippets in five languages on every page.

3

Collect the result

Receive a signed webhook the moment it's ready, or fetch a signed link. A failed task is never charged.

Pay only for what you use

No subscription. Free tools run in your browser; paid tasks draw from your balance, which never expires.

Free tools
$0.00

On-device utilities — hash, QR, JSON, Text→PDF and more — run in your browser. No account, no limits.

Balance
$10.00+

Top up your balance and spend it across web, API and the app. It never expires.