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.

REST APILive
EmailLive
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TelegramLive
iOS & AndroidBuilding
WhatsAppComing
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
Camera field of view calculator
AOV from focal length & sensor
Aabuela
POST /hobby/field-of-view$0.002
⚙️ Developer UtilitiesFree
Golden ratio font size calculator
heading & body type scale, free
AAspire
POST /hobby/golden-ratio-type$0.002
⚙️ Developer UtilitiesFree
Knitting gauge calculator
cast on stitches & rows, free
PPavilion
POST /hobby/knitting-gauge$0.002
⚙️ Developer UtilitiesFree
Modular type scale generator
base, ratio & steps, free
PPavilion
POST /hobby/modular-scale$0.002
⚙️ Developer UtilitiesFree
Musical interval calculator
semitones and interval name from two notes, free
AAspire
POST /hobby/musical-interval$0.002
⚙️ Developer UtilitiesFree
Note frequency calculator
equal temperament Hz from A4
Aabuela
POST /hobby/note-frequency$0.002
⚙️ Developer UtilitiesFree
NPF rule calculator
sharper max shutter for stars, free
PPavilion
POST /hobby/npf-rule$0.002
⚙️ Developer UtilitiesFree
Poker outs and odds calculator
next card and river hit probability, free
AAspire
POST /hobby/poker-odds$0.002
⚙️ Developer UtilitiesFree
Print size & DPI calculator
pixels to inches, free
AAspire
POST /hobby/print-dpi$0.002
⚙️ Developer UtilitiesFree
Reading time estimator
word count and WPM to duration, free
Aabuela
POST /hobby/reading-time$0.002
⚙️ Developer UtilitiesFree
Epoxy resin mix calculator
resin & hardener amounts by ratio, free
AAspire
POST /hobby/resin-mix$0.002
⚙️ Developer UtilitiesFree
Musical scale generator
notes from root and scale type, free
AAspire
POST /hobby/scale-notes$0.002
⚙️ Developer UtilitiesFree
Music transposition calculator
notes and chords by semitones
Aabuela
POST /hobby/transpose$0.002
⚙️ Developer UtilitiesFree
Yarn weight substitution calculator
skeins to buy from yardage, free
Aabuela
POST /hobby/yarn-substitution$0.002
⚙️ Developer UtilitiesFree
Air conditioner BTU calculator
room cooling capacity, free
PPavilion
POST /home/ac-btu$0.002
⚙️ Developer UtilitiesFree
Concrete block calculator
blocks from wall area, face size and waste
Aabuela
POST /home/blocks$0.002
⚙️ Developer UtilitiesFree
Carpet calculator
linear metres and area from room size and roll width free
AAspire
POST /home/carpet$0.002
⚙️ Developer UtilitiesFree
Concrete column calculator
cylindrical volume from diameter, height and count
Aabuela
POST /home/concrete-column$0.002
⚙️ Developer UtilitiesFree
Concrete footing calculator
volume from L×W×D×count, free
PPavilion
POST /home/concrete-footing$0.002
⚙️ Developer UtilitiesFree
Concrete slab calculator
volume and bags from length, width, thickness free
AAspire
POST /home/concrete-slab$0.002
⚙️ Developer UtilitiesFree
Crown molding calculator
sticks from perimeter and waste, free
PPavilion
POST /home/crown-molding$0.002
⚙️ Developer UtilitiesFree
Deck board calculator
boards needed from area, size, gap and waste free
AAspire
POST /home/deck-boards$0.002
⚙️ Developer UtilitiesFree
Fence post calculator
posts and rails from length and spacing, free
PPavilion
POST /home/fence-posts$0.002
⚙️ Developer UtilitiesFree
Lawn fertilizer calculator
pounds to apply from area, N rate, and bag nitrogen % free
AAspire
POST /home/fertilizer$0.002
⚙️ Developer UtilitiesFree
Floor tile calculator
tiles and boxes from room area, size and waste free
AAspire
POST /home/floor-tiles$0.002
⚙️ Developer UtilitiesFree
Gravel calculator
volume and weight from area, depth and density, free
PPavilion
POST /home/gravel$0.002
⚙️ Developer UtilitiesFree
Heater BTU calculator
room volume, insulation and temperature rise free
AAspire
POST /home/heater-btu$0.002
⚙️ Developer UtilitiesFree
Insulation R-value calculator
total assembly R and U-factor from layers
Aabuela
POST /home/insulation$0.002
⚙️ Developer UtilitiesFree
Laminate flooring calculator
packs from room area, coverage and waste
Aabuela
POST /home/laminate-flooring$0.002
⚙️ Developer UtilitiesFree
Mortar calculator
volume and bags from brick or block count free
AAspire
POST /home/mortar$0.002
⚙️ Developer UtilitiesFree
Paver calculator
patio pavers needed from area, size and waste free
AAspire
POST /home/pavers$0.002
⚙️ Developer UtilitiesFree
Pool chlorine dosage calculator
dose from volume, free chlorine levels, and product strength free
AAspire
POST /home/pool-chlorine$0.002
⚙️ Developer UtilitiesFree
Swimming pool volume calculator
liters and gallons from shape and dimensions
Aabuela
POST /home/pool-volume$0.002
⚙️ Developer UtilitiesFree
Roof pitch calculator
rise, run, slope angle and rafter factor, free
PPavilion
POST /home/roof-pitch$0.002
⚙️ Developer UtilitiesFree
Roofing shingles calculator
bundles and squares from area and pitch free
AAspire
POST /home/roof-shingles$0.002
⚙️ Developer UtilitiesFree
Sand calculator
volume and weight from area, depth and density
Aabuela
POST /home/sand$0.002
⚙️ Developer UtilitiesFree
Staircase step calculator
riser count, exact riser and tread run
Aabuela
POST /home/staircase-steps$0.002
⚙️ Developer UtilitiesFree
Topsoil calculator
volume in cubic yards and cubic meters from area and depth free
AAspire
POST /home/topsoil$0.002
⚙️ Developer UtilitiesFree
Wall stud calculator
count studs from length, spacing and openings
Aabuela
POST /home/wall-studs$0.002
⚙️ Developer UtilitiesFree
Wall tile calculator
tiles and boxes from area, size and waste
Aabuela
POST /home/wall-tiles$0.002
⚙️ Developer UtilitiesFree
Wallpaper rolls calculator
pattern repeat included, free
PPavilion
POST /home/wallpaper-rolls$0.002
⚙️ Developer UtilitiesFree
Water tank volume calculator
capacity in liters and gallons at a fill depth, free
PPavilion
POST /home/water-tank-volume$0.002
⚙️ Developer UtilitiesFree
Buy one get one discount calculator
BOGO effective % free
AAspire
POST /life/bogo-discount$0.002
⚙️ Developer UtilitiesFree
Recipe cost per serving calculator
ingredient costs ÷ servings, free
PPavilion
POST /life/cost-per-serving$0.002
⚙️ Developer UtilitiesFree
Shared expense splitter
itemized costs by weight free
AAspire
POST /life/expense-split$0.002
⚙️ Developer UtilitiesFree
Quit a habit savings calculator
money saved by quitting free
AAspire
POST /life/habit-savings$0.002
⚙️ Developer UtilitiesFree
Markup to margin converter
selling price, free
Aabuela
POST /life/markup-margin$0.002
⚙️ Developer UtilitiesFree
Overtime pay calculator
hourly rate, OT hours, gross pay, free
Aabuela
POST /life/overtime-pay$0.002
⚙️ Developer UtilitiesFree
Price per 100g calculator
compare products, find cheapest, free
Aabuela
POST /life/price-per-100g$0.002
⚙️ Developer UtilitiesFree
Rule of 114 and 144 calculator
years to triple or quadruple free
AAspire
POST /life/rule-of-114$0.002
⚙️ Developer UtilitiesFree
Salary to hourly converter
annual pay to hourly wage free
AAspire
POST /life/salary-to-hourly$0.002
⚙️ Developer UtilitiesFree
Sales tax calculator
tax amount and total from rate, free
PPavilion
POST /life/sales-tax$0.002
⚙️ Developer UtilitiesFree
Savings goal time calculator
months to target with fixed deposits
PPavilion
POST /life/savings-goal-time$0.002
⚙️ Developer UtilitiesFree
Subscription annual cost calculator
monthly & yearly totals, free
Aabuela
POST /life/subscription-annual$0.002
⚙️ Developer UtilitiesFree
Tip and split calculator
bill, tip %, per person, free
Aabuela
POST /life/tip-split$0.002
⚙️ Developer UtilitiesFree
Unit price comparison calculator
price per unit and best value, free
PPavilion
POST /life/unit-price$0.002
⚙️ Developer UtilitiesFree
Arithmetic sequence calculator
nth term and partial sum, free
AAspire
POST /math/arithmetic-sequence$0.002
⚙️ Developer UtilitiesFree
Arithmetic series sum calculator
S = n(a1+an)/2, free
PPavilion
POST /math/arithmetic-series-sum$0.002
⚙️ Developer UtilitiesFree
Catalan number calculator
nth Catalan C(n), free
AAspire
POST /math/catalan-number$0.002
⚙️ Developer UtilitiesFree
Double factorial calculator
compute n!! with BigInt precision
Aabuela
POST /math/double-factorial$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.